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-rw-r--r--drivers/acpi/Kconfig4
-rw-r--r--drivers/acpi/bgrt.c76
-rw-r--r--drivers/acpi/pci_root.c101
-rw-r--r--drivers/acpi/pci_slot.c44
-rw-r--r--drivers/base/core.c105
-rw-r--r--drivers/base/devres.c42
-rw-r--r--drivers/base/firmware_class.c838
-rw-r--r--drivers/base/platform.c41
-rw-r--r--drivers/base/power/main.c22
-rw-r--r--drivers/base/regmap/regmap-irq.c92
-rw-r--r--drivers/base/regmap/regmap.c13
-rw-r--r--drivers/block/Kconfig12
-rw-r--r--drivers/block/Makefile1
-rw-r--r--drivers/block/aoe/aoecmd.c1
-rw-r--r--drivers/block/cciss_scsi.c1
-rw-r--r--drivers/block/mtip32xx/mtip32xx.c38
-rw-r--r--drivers/block/mtip32xx/mtip32xx.h10
-rw-r--r--drivers/block/nbd.c9
-rw-r--r--drivers/block/nvme.c155
-rw-r--r--drivers/block/rbd.c7
-rw-r--r--drivers/block/ub.c2474
-rw-r--r--drivers/block/xen-blkback/blkback.c2
-rw-r--r--drivers/bluetooth/hci_ath.c2
-rw-r--r--drivers/char/Kconfig6
-rw-r--r--drivers/char/agp/sgi-agp.c5
-rw-r--r--drivers/char/mmtimer.c3
-rw-r--r--drivers/char/mwave/mwavedd.c16
-rw-r--r--drivers/char/nwbutton.c4
-rw-r--r--drivers/char/pcmcia/synclink_cs.c149
-rw-r--r--drivers/char/ppdev.c3
-rw-r--r--drivers/char/rtc.c2
-rw-r--r--drivers/char/tlclk.c4
-rw-r--r--drivers/char/ttyprintk.c33
-rw-r--r--drivers/char/virtio_console.c12
-rw-r--r--drivers/clk/Kconfig13
-rw-r--r--drivers/clk/Makefile10
-rw-r--r--drivers/clk/clk-devres.c55
-rw-r--r--drivers/clk/clk-ls1x.c111
-rw-r--r--drivers/clk/clk-max77686.c244
-rw-r--r--drivers/clk/clk-prima2.c1171
-rw-r--r--drivers/clk/clk.c57
-rw-r--r--drivers/clk/clkdev.c45
-rw-r--r--drivers/clk/mmp/Makefile9
-rw-r--r--drivers/clk/mmp/clk-apbc.c152
-rw-r--r--drivers/clk/mmp/clk-apmu.c97
-rw-r--r--drivers/clk/mmp/clk-frac.c153
-rw-r--r--drivers/clk/mmp/clk-mmp2.c449
-rw-r--r--drivers/clk/mmp/clk-pxa168.c346
-rw-r--r--drivers/clk/mmp/clk-pxa910.c320
-rw-r--r--drivers/clk/mmp/clk.h35
-rw-r--r--drivers/clk/ux500/Makefile12
-rw-r--r--drivers/clk/ux500/clk-prcc.c164
-rw-r--r--drivers/clk/ux500/clk-prcmu.c252
-rw-r--r--drivers/clk/ux500/clk.h48
-rw-r--r--drivers/clk/ux500/u8500_clk.c477
-rw-r--r--drivers/clk/ux500/u8540_clk.c21
-rw-r--r--drivers/clk/ux500/u9540_clk.c21
-rw-r--r--drivers/clk/versatile/Makefile1
-rw-r--r--drivers/clk/versatile/clk-realview.c114
-rw-r--r--drivers/clocksource/Kconfig5
-rw-r--r--drivers/clocksource/Makefile1
-rw-r--r--drivers/clocksource/arm_generic.c232
-rw-r--r--drivers/cpufreq/powernow-k8.c63
-rw-r--r--drivers/dma/at_hdmac.c21
-rw-r--r--drivers/dma/ep93xx_dma.c2
-rw-r--r--drivers/dma/fsldma.c2
-rw-r--r--drivers/dma/imx-dma.c4
-rw-r--r--drivers/dma/intel_mid_dma.c2
-rw-r--r--drivers/dma/intel_mid_dma_regs.h6
-rw-r--r--drivers/dma/ioat/hw.h4
-rw-r--r--drivers/dma/pl330.c23
-rw-r--r--drivers/dma/ppc4xx/adma.c2
-rw-r--r--drivers/dma/ste_dma40_ll.h2
-rw-r--r--drivers/edac/edac_mc.c57
-rw-r--r--drivers/edac/i3200_edac.c2
-rw-r--r--drivers/edac/i5000_edac.c4
-rw-r--r--drivers/edac/sb_edac.c7
-rw-r--r--drivers/extcon/Kconfig8
-rw-r--r--drivers/extcon/Makefile5
-rw-r--r--drivers/extcon/extcon-adc-jack.c198
-rw-r--r--drivers/extcon/extcon-arizona.c83
-rw-r--r--drivers/extcon/extcon-class.c (renamed from drivers/extcon/extcon_class.c)12
-rw-r--r--drivers/extcon/extcon-gpio.c (renamed from drivers/extcon/extcon_gpio.c)0
-rw-r--r--drivers/extcon/extcon-max77693.c8
-rw-r--r--drivers/firmware/efivars.c17
-rw-r--r--drivers/gpio/gpio-lpc32xx.c5
-rw-r--r--drivers/gpu/drm/i915/i915_gem.c3
-rw-r--r--drivers/gpu/drm/i915/intel_display.c12
-rw-r--r--drivers/gpu/drm/i915/intel_hdmi.c2
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_abi16.c2
-rw-r--r--drivers/gpu/drm/nouveau/nv50_gpio.c15
-rw-r--r--drivers/gpu/drm/nouveau/nvc0_fb.c1
-rw-r--r--drivers/gpu/drm/nouveau/nvc0_fifo.c3
-rw-r--r--drivers/gpu/drm/nouveau/nve0_fifo.c3
-rw-r--r--drivers/gpu/drm/radeon/atombios_crtc.c163
-rw-r--r--drivers/gpu/drm/radeon/evergreen.c10
-rw-r--r--drivers/gpu/drm/radeon/r100.c3
-rw-r--r--drivers/gpu/drm/udl/udl_connector.c7
-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_fence.c2
-rw-r--r--drivers/gpu/vga/vgaarb.c29
-rw-r--r--drivers/hid/Kconfig36
-rw-r--r--drivers/hid/Makefile22
-rw-r--r--drivers/hid/hid-a4tech.c1
-rw-r--r--drivers/hid/hid-apple.c1
-rw-r--r--drivers/hid/hid-aureal.c1
-rw-r--r--drivers/hid/hid-belkin.c1
-rw-r--r--drivers/hid/hid-cherry.c1
-rw-r--r--drivers/hid/hid-core.c43
-rw-r--r--drivers/hid/hid-cypress.c1
-rw-r--r--drivers/hid/hid-debug.c12
-rw-r--r--drivers/hid/hid-ezkey.c1
-rw-r--r--drivers/hid/hid-gyration.c1
-rw-r--r--drivers/hid/hid-holtekff.c3
-rw-r--r--drivers/hid/hid-ids.h22
-rw-r--r--drivers/hid/hid-input.c11
-rw-r--r--drivers/hid/hid-lcpower.c2
-rw-r--r--drivers/hid/hid-lenovo-tpkbd.c149
-rw-r--r--drivers/hid/hid-lg.c20
-rw-r--r--drivers/hid/hid-lg.h4
-rw-r--r--drivers/hid/hid-lg4ff.c198
-rw-r--r--drivers/hid/hid-logitech-dj.c45
-rw-r--r--drivers/hid/hid-logitech-dj.h1
-rw-r--r--drivers/hid/hid-magicmouse.c2
-rw-r--r--drivers/hid/hid-microsoft.c1
-rw-r--r--drivers/hid/hid-monterey.c1
-rw-r--r--drivers/hid/hid-multitouch.c252
-rw-r--r--drivers/hid/hid-ntrig.c8
-rw-r--r--drivers/hid/hid-petalynx.c1
-rw-r--r--drivers/hid/hid-picolcd.c2748
-rw-r--r--drivers/hid/hid-picolcd.h309
-rw-r--r--drivers/hid/hid-picolcd_backlight.c122
-rw-r--r--drivers/hid/hid-picolcd_cir.c152
-rw-r--r--drivers/hid/hid-picolcd_core.c689
-rw-r--r--drivers/hid/hid-picolcd_debugfs.c899
-rw-r--r--drivers/hid/hid-picolcd_fb.c615
-rw-r--r--drivers/hid/hid-picolcd_lcd.c107
-rw-r--r--drivers/hid/hid-picolcd_leds.c175
-rw-r--r--drivers/hid/hid-primax.c25
-rw-r--r--drivers/hid/hid-prodikeys.c18
-rw-r--r--drivers/hid/hid-ps3remote.c215
-rw-r--r--drivers/hid/hid-samsung.c1
-rw-r--r--drivers/hid/hid-sensor-hub.c680
-rw-r--r--drivers/hid/hid-sony.c1
-rw-r--r--drivers/hid/hid-sunplus.c1
-rw-r--r--drivers/hid/hid-uclogic.c98
-rw-r--r--drivers/hid/hid-wacom.c170
-rw-r--r--drivers/hid/hid-waltop.c29
-rw-r--r--drivers/hid/hid-wiimote-ext.c97
-rw-r--r--drivers/hid/hidraw.c84
-rw-r--r--drivers/hid/usbhid/hid-core.c6
-rw-r--r--drivers/hid/usbhid/hid-quirks.c3
-rw-r--r--drivers/hv/hv.c34
-rw-r--r--drivers/hv/hv_kvp.c253
-rw-r--r--drivers/hv/hv_util.c4
-rw-r--r--drivers/hv/hyperv_vmbus.h47
-rw-r--r--drivers/hv/vmbus_drv.c42
-rw-r--r--drivers/hwmon/Kconfig126
-rw-r--r--drivers/hwmon/Makefile2
-rw-r--r--drivers/hwmon/abituguru.c7
-rw-r--r--drivers/hwmon/abituguru3.c6
-rw-r--r--drivers/hwmon/ad7314.c24
-rw-r--r--drivers/hwmon/ad7414.c21
-rw-r--r--drivers/hwmon/ad7418.c21
-rw-r--r--drivers/hwmon/adcxx.c9
-rw-r--r--drivers/hwmon/adm1029.c21
-rw-r--r--drivers/hwmon/adm9240.c26
-rw-r--r--drivers/hwmon/ads1015.c12
-rw-r--r--drivers/hwmon/ads7828.c15
-rw-r--r--drivers/hwmon/ads7871.c30
-rw-r--r--drivers/hwmon/adt7410.c464
-rw-r--r--drivers/hwmon/adt7411.c9
-rw-r--r--drivers/hwmon/adt7462.c15
-rw-r--r--drivers/hwmon/adt7470.c15
-rw-r--r--drivers/hwmon/amc6821.c16
-rw-r--r--drivers/hwmon/applesmc.c4
-rw-r--r--drivers/hwmon/asb100.c17
-rw-r--r--drivers/hwmon/asus_atk0110.c1
-rw-r--r--drivers/hwmon/coretemp.c5
-rw-r--r--drivers/hwmon/dme1737.c45
-rw-r--r--drivers/hwmon/ds620.c16
-rw-r--r--drivers/hwmon/emc1403.c18
-rw-r--r--drivers/hwmon/emc2103.c10
-rw-r--r--drivers/hwmon/f71882fg.c48
-rw-r--r--drivers/hwmon/f75375s.c8
-rw-r--r--drivers/hwmon/fam15h_power.c40
-rw-r--r--drivers/hwmon/g760a.c10
-rw-r--r--drivers/hwmon/ina2xx.c169
-rw-r--r--drivers/hwmon/jz4740-hwmon.c53
-rw-r--r--drivers/hwmon/lm70.c42
-rw-r--r--drivers/hwmon/lm93.c2
-rw-r--r--drivers/hwmon/lm95241.c15
-rw-r--r--drivers/hwmon/lm95245.c15
-rw-r--r--drivers/hwmon/ltc4151.c15
-rw-r--r--drivers/hwmon/ltc4215.c15
-rw-r--r--drivers/hwmon/ltc4245.c14
-rw-r--r--drivers/hwmon/max1111.c74
-rw-r--r--drivers/hwmon/max1668.c8
-rw-r--r--drivers/hwmon/max197.c349
-rw-r--r--drivers/hwmon/mcp3021.c67
-rw-r--r--drivers/hwmon/sch5627.c5
-rw-r--r--drivers/hwmon/sch5636.c6
-rw-r--r--drivers/hwmon/sch56xx-common.c28
-rw-r--r--drivers/hwmon/sht15.c154
-rw-r--r--drivers/hwmon/sht21.c13
-rw-r--r--drivers/hwmon/via-cputemp.c28
-rw-r--r--drivers/hwmon/vt8231.c24
-rw-r--r--drivers/hwmon/w83791d.c7
-rw-r--r--drivers/hwmon/w83792d.c58
-rw-r--r--drivers/hwmon/w83793.c23
-rw-r--r--drivers/hwmon/w83l786ng.c13
-rw-r--r--drivers/hwspinlock/hwspinlock_core.c3
-rw-r--r--drivers/iio/Kconfig7
-rw-r--r--drivers/iio/Makefile5
-rw-r--r--drivers/iio/accel/Kconfig16
-rw-r--r--drivers/iio/accel/Makefile5
-rw-r--r--drivers/iio/accel/hid-sensor-accel-3d.c418
-rw-r--r--drivers/iio/adc/Kconfig38
-rw-r--r--drivers/iio/adc/Makefile4
-rw-r--r--drivers/iio/adc/ad7266.c2
-rw-r--r--drivers/iio/adc/ad7476.c (renamed from drivers/staging/iio/adc/ad7476_core.c)210
-rw-r--r--drivers/iio/adc/ad7791.c460
-rw-r--r--drivers/iio/adc/ad_sigma_delta.c558
-rw-r--r--drivers/iio/adc/at91_adc.c77
-rw-r--r--drivers/iio/adc/lp8788_adc.c264
-rw-r--r--drivers/iio/common/Kconfig5
-rw-r--r--drivers/iio/common/Makefile9
-rw-r--r--drivers/iio/common/hid-sensors/Kconfig26
-rw-r--r--drivers/iio/common/hid-sensors/Makefile6
-rw-r--r--drivers/iio/common/hid-sensors/hid-sensor-attributes.c250
-rw-r--r--drivers/iio/common/hid-sensors/hid-sensor-attributes.h57
-rw-r--r--drivers/iio/common/hid-sensors/hid-sensor-trigger.c103
-rw-r--r--drivers/iio/common/hid-sensors/hid-sensor-trigger.h26
-rw-r--r--drivers/iio/dac/Kconfig20
-rw-r--r--drivers/iio/dac/Makefile1
-rw-r--r--drivers/iio/dac/ad5446.c450
-rw-r--r--drivers/iio/dac/ad5446.h91
-rw-r--r--drivers/iio/dac/ad5755.c650
-rw-r--r--drivers/iio/gyro/Kconfig16
-rw-r--r--drivers/iio/gyro/Makefile5
-rw-r--r--drivers/iio/gyro/hid-sensor-gyro-3d.c418
-rw-r--r--drivers/iio/industrialio-buffer.c15
-rw-r--r--drivers/iio/industrialio-core.c13
-rw-r--r--drivers/iio/inkern.c139
-rw-r--r--drivers/iio/kfifo_buf.c31
-rw-r--r--drivers/iio/light/Kconfig10
-rw-r--r--drivers/iio/light/Makefile1
-rw-r--r--drivers/iio/light/adjd_s311.c2
-rw-r--r--drivers/iio/light/hid-sensor-als.c385
-rw-r--r--drivers/iio/magnetometer/Kconfig16
-rw-r--r--drivers/iio/magnetometer/Makefile5
-rw-r--r--drivers/iio/magnetometer/hid-sensor-magn-3d.c419
-rw-r--r--drivers/infiniband/hw/cxgb4/cm.c2
-rw-r--r--drivers/infiniband/hw/ehca/ehca_irq.c250
-rw-r--r--drivers/infiniband/hw/ehca/ehca_irq.h6
-rw-r--r--drivers/infiniband/hw/mthca/mthca_reset.c8
-rw-r--r--drivers/infiniband/hw/ocrdma/ocrdma_verbs.c8
-rw-r--r--drivers/infiniband/hw/qib/qib.h2
-rw-r--r--drivers/infiniband/hw/qib/qib_mad.c3
-rw-r--r--drivers/infiniband/hw/qib/qib_pcie.c40
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib.h5
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib_main.c93
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib_multicast.c2
-rw-r--r--drivers/input/evdev.c78
-rw-r--r--drivers/input/input-mt.c305
-rw-r--r--drivers/input/input.c254
-rw-r--r--drivers/input/keyboard/imx_keypad.c4
-rw-r--r--drivers/input/misc/ab8500-ponkey.c4
-rw-r--r--drivers/input/misc/uinput.c2
-rw-r--r--drivers/input/mouse/alps.c2
-rw-r--r--drivers/input/mouse/bcm5974.c348
-rw-r--r--drivers/input/mouse/elantech.c4
-rw-r--r--drivers/input/mouse/sentelic.c13
-rw-r--r--drivers/input/mouse/synaptics.c4
-rw-r--r--drivers/input/serio/ambakmi.c6
-rw-r--r--drivers/input/serio/i8042-x86ia64io.h6
-rw-r--r--drivers/input/tablet/wacom_wac.c6
-rw-r--r--drivers/input/touchscreen/atmel_mxt_ts.c2
-rw-r--r--drivers/input/touchscreen/cyttsp_core.c2
-rw-r--r--drivers/input/touchscreen/edt-ft5x06.c11
-rw-r--r--drivers/input/touchscreen/egalax_ts.c2
-rw-r--r--drivers/input/touchscreen/ili210x.c2
-rw-r--r--drivers/input/touchscreen/mms114.c2
-rw-r--r--drivers/input/touchscreen/penmount.c2
-rw-r--r--drivers/input/touchscreen/usbtouchscreen.c40
-rw-r--r--drivers/input/touchscreen/wacom_w8001.c2
-rw-r--r--drivers/iommu/amd_iommu.c6
-rw-r--r--drivers/iommu/intel-iommu.c6
-rw-r--r--drivers/isdn/capi/capi.c3
-rw-r--r--drivers/isdn/gigaset/interface.c7
-rw-r--r--drivers/isdn/i4l/isdn_tty.c41
-rw-r--r--drivers/lguest/x86/core.c10
-rw-r--r--drivers/md/dm-mpath.c11
-rw-r--r--drivers/md/dm-table.c61
-rw-r--r--drivers/md/dm-thin.c135
-rw-r--r--drivers/md/dm-verity.c8
-rw-r--r--drivers/md/dm.c71
-rw-r--r--drivers/md/dm.h1
-rw-r--r--drivers/md/md.c6
-rw-r--r--drivers/md/raid10.c8
-rw-r--r--drivers/md/raid5.c7
-rw-r--r--drivers/media/dvb/ngene/ngene-cards.c2
-rw-r--r--drivers/memory/Makefile3
-rw-r--r--drivers/memory/emif.c205
-rw-r--r--drivers/memory/of_memory.c153
-rw-r--r--drivers/memory/of_memory.h36
-rw-r--r--drivers/memory/tegra20-mc.c10
-rw-r--r--drivers/memory/tegra30-mc.c22
-rw-r--r--drivers/mfd/ab8500-gpadc.c2
-rw-r--r--drivers/mfd/db8500-prcmu.c42
-rw-r--r--drivers/mfd/dbx500-prcmu-regs.h4
-rw-r--r--drivers/mfd/rc5t583.c2
-rw-r--r--drivers/mfd/rdc321x-southbridge.c2
-rw-r--r--drivers/mfd/tps6586x.c13
-rw-r--r--drivers/mfd/tps65911-comparator.c2
-rw-r--r--drivers/mfd/wm8994-irq.c1
-rw-r--r--drivers/misc/Kconfig14
-rw-r--r--drivers/misc/bmp085-i2c.c7
-rw-r--r--drivers/misc/bmp085-spi.c13
-rw-r--r--drivers/misc/c2port/Kconfig5
-rw-r--r--drivers/misc/carma/carma-fpga-program.c1
-rw-r--r--drivers/misc/carma/carma-fpga.c2
-rw-r--r--drivers/misc/eeprom/Kconfig2
-rw-r--r--drivers/misc/eeprom/at25.c83
-rw-r--r--drivers/misc/hpilo.c11
-rw-r--r--drivers/misc/ibmasm/uart.c16
-rw-r--r--drivers/misc/lis3lv02d/lis3lv02d.c192
-rw-r--r--drivers/misc/lis3lv02d/lis3lv02d.h49
-rw-r--r--drivers/misc/lis3lv02d/lis3lv02d_i2c.c32
-rw-r--r--drivers/misc/lis3lv02d/lis3lv02d_spi.c21
-rw-r--r--drivers/misc/mei/Kconfig2
-rw-r--r--drivers/misc/mei/hw.h83
-rw-r--r--drivers/misc/mei/init.c93
-rw-r--r--drivers/misc/mei/interface.h10
-rw-r--r--drivers/misc/mei/interrupt.c44
-rw-r--r--drivers/misc/mei/iorw.c59
-rw-r--r--drivers/misc/mei/main.c107
-rw-r--r--drivers/misc/mei/mei_dev.h78
-rw-r--r--drivers/misc/mei/wd.c91
-rw-r--r--drivers/misc/pch_phub.c15
-rw-r--r--drivers/misc/pti.c128
-rw-r--r--drivers/misc/ti-st/st_core.c12
-rw-r--r--drivers/misc/ti-st/st_kim.c109
-rw-r--r--drivers/misc/tifm_7xx1.c14
-rw-r--r--drivers/mmc/card/sdio_uart.c24
-rw-r--r--drivers/mmc/core/sdio.c2
-rw-r--r--drivers/mmc/host/at91_mci.c2
-rw-r--r--drivers/mmc/host/atmel-mci.c2
-rw-r--r--drivers/mmc/host/omap_hsmmc.c2
-rw-r--r--drivers/mmc/host/sdhci-esdhc-imx.c2
-rw-r--r--drivers/mmc/host/vub300.c2
-rw-r--r--drivers/mtd/mtdchar.c48
-rw-r--r--drivers/net/can/janz-ican3.c4
-rw-r--r--drivers/net/can/ti_hecc.c2
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-rw-r--r--drivers/tty/serial/msm_serial.c2
-rw-r--r--drivers/tty/serial/msm_smd_tty.c8
-rw-r--r--drivers/tty/serial/mxs-auart.c8
-rw-r--r--drivers/tty/serial/of_serial.c13
-rw-r--r--drivers/tty/serial/omap-serial.c885
-rw-r--r--drivers/tty/serial/pch_uart.c4
-rw-r--r--drivers/tty/serial/pxa.c14
-rw-r--r--drivers/tty/serial/samsung.c95
-rw-r--r--drivers/tty/serial/sc26xx.c4
-rw-r--r--drivers/tty/serial/sccnxp.c990
-rw-r--r--drivers/tty/serial/serial_core.c251
-rw-r--r--drivers/tty/serial/sirfsoc_uart.c8
-rw-r--r--drivers/tty/serial/sunsu.c8
-rw-r--r--drivers/tty/synclink.c86
-rw-r--r--drivers/tty/synclink_gt.c37
-rw-r--r--drivers/tty/synclinkmp.c58
-rw-r--r--drivers/tty/tty_io.c375
-rw-r--r--drivers/tty/tty_ioctl.c100
-rw-r--r--drivers/tty/tty_ldisc.c78
-rw-r--r--drivers/tty/tty_mutex.c71
-rw-r--r--drivers/tty/tty_port.c94
-rw-r--r--drivers/tty/vt/keyboard.c50
-rw-r--r--drivers/tty/vt/vt.c141
-rw-r--r--drivers/usb/Kconfig1
-rw-r--r--drivers/usb/atm/ueagle-atm.c79
-rw-r--r--drivers/usb/atm/usbatm.c46
-rw-r--r--drivers/usb/chipidea/Kconfig1
-rw-r--r--drivers/usb/chipidea/Makefile4
-rw-r--r--drivers/usb/chipidea/ci.h1
-rw-r--r--drivers/usb/chipidea/ci13xxx_imx.c71
-rw-r--r--drivers/usb/chipidea/ci13xxx_imx.h28
-rw-r--r--drivers/usb/chipidea/core.c24
-rw-r--r--drivers/usb/chipidea/udc.c39
-rw-r--r--drivers/usb/chipidea/usbmisc_imx6q.c162
-rw-r--r--drivers/usb/class/cdc-acm.c6
-rw-r--r--drivers/usb/core/Kconfig2
-rw-r--r--drivers/usb/core/config.c2
-rw-r--r--drivers/usb/core/devices.c9
-rw-r--r--drivers/usb/core/devio.c35
-rw-r--r--drivers/usb/core/driver.c11
-rw-r--r--drivers/usb/core/endpoint.c10
-rw-r--r--drivers/usb/core/hcd.c28
-rw-r--r--drivers/usb/core/hub.c214
-rw-r--r--drivers/usb/core/message.c2
-rw-r--r--drivers/usb/core/quirks.c2
-rw-r--r--drivers/usb/core/sysfs.c12
-rw-r--r--drivers/usb/core/usb-acpi.c205
-rw-r--r--drivers/usb/core/usb.h13
-rw-r--r--drivers/usb/dwc3/Kconfig2
-rw-r--r--drivers/usb/dwc3/core.c18
-rw-r--r--drivers/usb/dwc3/core.h7
-rw-r--r--drivers/usb/dwc3/dwc3-exynos.c66
-rw-r--r--drivers/usb/dwc3/dwc3-omap.c66
-rw-r--r--drivers/usb/dwc3/dwc3-pci.c67
-rw-r--r--drivers/usb/dwc3/ep0.c217
-rw-r--r--drivers/usb/dwc3/gadget.c101
-rw-r--r--drivers/usb/early/ehci-dbgp.c17
-rw-r--r--drivers/usb/gadget/Kconfig78
-rw-r--r--drivers/usb/gadget/Makefile4
-rw-r--r--drivers/usb/gadget/acm_ms.c55
-rw-r--r--drivers/usb/gadget/amd5536udc.c6
-rw-r--r--drivers/usb/gadget/at91_udc.c5
-rw-r--r--drivers/usb/gadget/audio.c62
-rw-r--r--drivers/usb/gadget/bcm63xx_udc.c2464
-rw-r--r--drivers/usb/gadget/cdc2.c56
-rw-r--r--drivers/usb/gadget/composite.c290
-rw-r--r--drivers/usb/gadget/config.c6
-rw-r--r--drivers/usb/gadget/dbgp.c11
-rw-r--r--drivers/usb/gadget/dummy_hcd.c2
-rw-r--r--drivers/usb/gadget/epautoconf.c33
-rw-r--r--drivers/usb/gadget/ether.c61
-rw-r--r--drivers/usb/gadget/f_ecm.c5
-rw-r--r--drivers/usb/gadget/f_hid.c2
-rw-r--r--drivers/usb/gadget/f_mass_storage.c16
-rw-r--r--drivers/usb/gadget/f_midi.c1
-rw-r--r--drivers/usb/gadget/f_ncm.c5
-rw-r--r--drivers/usb/gadget/f_sourcesink.c2
-rw-r--r--drivers/usb/gadget/f_subset.c5
-rw-r--r--drivers/usb/gadget/f_uac2.c2
-rw-r--r--drivers/usb/gadget/file_storage.c38
-rw-r--r--drivers/usb/gadget/fsl_udc_core.c6
-rw-r--r--drivers/usb/gadget/fusb300_udc.c4
-rw-r--r--drivers/usb/gadget/g_ffs.c26
-rw-r--r--drivers/usb/gadget/gadget_chips.h96
-rw-r--r--drivers/usb/gadget/gmidi.c61
-rw-r--r--drivers/usb/gadget/goku_udc.c6
-rw-r--r--drivers/usb/gadget/hid.c52
-rw-r--r--drivers/usb/gadget/inode.c29
-rw-r--r--drivers/usb/gadget/lpc32xx_udc.c129
-rw-r--r--drivers/usb/gadget/m66592-udc.c4
-rw-r--r--drivers/usb/gadget/mass_storage.c39
-rw-r--r--drivers/usb/gadget/multi.c42
-rw-r--r--drivers/usb/gadget/mv_udc_core.c91
-rw-r--r--drivers/usb/gadget/ncm.c62
-rw-r--r--drivers/usb/gadget/nokia.c58
-rw-r--r--drivers/usb/gadget/omap_udc.c6
-rw-r--r--drivers/usb/gadget/pch_udc.c6
-rw-r--r--drivers/usb/gadget/printer.c173
-rw-r--r--drivers/usb/gadget/pxa25x_udc.c7
-rw-r--r--drivers/usb/gadget/pxa25x_udc.h2
-rw-r--r--drivers/usb/gadget/pxa27x_udc.c6
-rw-r--r--drivers/usb/gadget/rndis.c22
-rw-r--r--drivers/usb/gadget/s3c-hsotg.c8
-rw-r--r--drivers/usb/gadget/s3c-hsudc.c51
-rw-r--r--drivers/usb/gadget/s3c2410_udc.c148
-rw-r--r--drivers/usb/gadget/serial.c72
-rw-r--r--drivers/usb/gadget/tcm_usb_gadget.c49
-rw-r--r--drivers/usb/gadget/tcm_usb_gadget.h11
-rw-r--r--drivers/usb/gadget/u_ether.c8
-rw-r--r--drivers/usb/gadget/u_serial.c3
-rw-r--r--drivers/usb/gadget/udc-core.c13
-rw-r--r--drivers/usb/gadget/usbstring.c3
-rw-r--r--drivers/usb/gadget/webcam.c42
-rw-r--r--drivers/usb/gadget/zero.c73
-rw-r--r--drivers/usb/host/Kconfig40
-rw-r--r--drivers/usb/host/ehci-atmel.c30
-rw-r--r--drivers/usb/host/ehci-au1xxx.c20
-rw-r--r--drivers/usb/host/ehci-cns3xxx.c16
-rw-r--r--drivers/usb/host/ehci-dbg.c6
-rw-r--r--drivers/usb/host/ehci-fsl.c57
-rw-r--r--drivers/usb/host/ehci-fsl.h1
-rw-r--r--drivers/usb/host/ehci-grlib.c18
-rw-r--r--drivers/usb/host/ehci-hcd.c4
-rw-r--r--drivers/usb/host/ehci-hub.c4
-rw-r--r--drivers/usb/host/ehci-ixp4xx.c19
-rw-r--r--drivers/usb/host/ehci-ls1x.c20
-rw-r--r--drivers/usb/host/ehci-msm.c13
-rw-r--r--drivers/usb/host/ehci-mv.c51
-rw-r--r--drivers/usb/host/ehci-mxc.c45
-rw-r--r--drivers/usb/host/ehci-platform.c50
-rw-r--r--drivers/usb/host/ehci-ppc-of.c28
-rw-r--r--drivers/usb/host/ehci-s5p.c7
-rw-r--r--drivers/usb/host/ehci-sead3.c15
-rw-r--r--drivers/usb/host/ehci-sh.c35
-rw-r--r--drivers/usb/host/ehci-tegra.c57
-rw-r--r--drivers/usb/host/ehci-timer.c6
-rw-r--r--drivers/usb/host/ehci-vt8500.c24
-rw-r--r--drivers/usb/host/ehci-xilinx-of.c20
-rw-r--r--drivers/usb/host/fhci-sched.c3
-rw-r--r--drivers/usb/host/fsl-mph-dr-of.c2
-rw-r--r--drivers/usb/host/ohci-at91.c3
-rw-r--r--drivers/usb/host/ohci-nxp.c2
-rw-r--r--drivers/usb/host/ohci-platform.c46
-rw-r--r--drivers/usb/host/ohci-pxa27x.c68
-rw-r--r--drivers/usb/host/ohci-xls.c2
-rw-r--r--drivers/usb/host/r8a66597-hcd.c5
-rw-r--r--drivers/usb/host/sl811-hcd.c2
-rw-r--r--drivers/usb/host/uhci-hcd.c5
-rw-r--r--drivers/usb/host/uhci-platform.c157
-rw-r--r--drivers/usb/host/whci/hcd.c8
-rw-r--r--drivers/usb/host/whci/qset.c11
-rw-r--r--drivers/usb/host/xhci-hub.c20
-rw-r--r--drivers/usb/host/xhci-mem.c7
-rw-r--r--drivers/usb/host/xhci-pci.c1
-rw-r--r--drivers/usb/host/xhci-ring.c290
-rw-r--r--drivers/usb/host/xhci.c43
-rw-r--r--drivers/usb/host/xhci.h20
-rw-r--r--drivers/usb/misc/Kconfig5
-rw-r--r--drivers/usb/misc/Makefile1
-rw-r--r--drivers/usb/misc/ezusb.c160
-rw-r--r--drivers/usb/misc/legousbtower.c3
-rw-r--r--drivers/usb/misc/rio500.c2
-rw-r--r--drivers/usb/musb/Kconfig3
-rw-r--r--drivers/usb/musb/am35x.c67
-rw-r--r--drivers/usb/musb/blackfin.c64
-rw-r--r--drivers/usb/musb/cppi_dma.c2
-rw-r--r--drivers/usb/musb/da8xx.c59
-rw-r--r--drivers/usb/musb/davinci.c67
-rw-r--r--drivers/usb/musb/musb_core.c331
-rw-r--r--drivers/usb/musb/musb_core.h17
-rw-r--r--drivers/usb/musb/musb_debugfs.c8
-rw-r--r--drivers/usb/musb/musb_dma.h2
-rw-r--r--drivers/usb/musb/musb_dsps.c194
-rw-r--r--drivers/usb/musb/musb_gadget.c172
-rw-r--r--drivers/usb/musb/musb_host.c264
-rw-r--r--drivers/usb/musb/musb_host.h3
-rw-r--r--drivers/usb/musb/musb_virthub.c13
-rw-r--r--drivers/usb/musb/musbhsdma.c2
-rw-r--r--drivers/usb/musb/omap2430.c156
-rw-r--r--drivers/usb/musb/omap2430.h9
-rw-r--r--drivers/usb/musb/tusb6010.c57
-rw-r--r--drivers/usb/musb/tusb6010_omap.c2
-rw-r--r--drivers/usb/musb/ux500.c33
-rw-r--r--drivers/usb/musb/ux500_dma.c2
-rw-r--r--drivers/usb/otg/Kconfig2
-rw-r--r--drivers/usb/otg/fsl_otg.c34
-rw-r--r--drivers/usb/otg/mxs-phy.c38
-rw-r--r--drivers/usb/otg/nop-usb-xceiv.c8
-rw-r--r--drivers/usb/otg/otg.c2
-rw-r--r--drivers/usb/otg/twl4030-usb.c26
-rw-r--r--drivers/usb/otg/twl6030-usb.c157
-rw-r--r--drivers/usb/phy/Kconfig17
-rw-r--r--drivers/usb/phy/Makefile3
-rw-r--r--drivers/usb/phy/isp1301.c6
-rw-r--r--drivers/usb/phy/mv_u3d_phy.c345
-rw-r--r--drivers/usb/phy/mv_u3d_phy.h105
-rw-r--r--drivers/usb/phy/omap-usb2.c271
-rw-r--r--drivers/usb/phy/tegra_usb_phy.c839
-rw-r--r--drivers/usb/renesas_usbhs/common.c15
-rw-r--r--drivers/usb/renesas_usbhs/mod.c25
-rw-r--r--drivers/usb/serial/Kconfig21
-rw-r--r--drivers/usb/serial/Makefile2
-rw-r--r--drivers/usb/serial/aircable.c5
-rw-r--r--drivers/usb/serial/ark3116.c11
-rw-r--r--drivers/usb/serial/belkin_sa.c10
-rw-r--r--drivers/usb/serial/ch341.c49
-rw-r--r--drivers/usb/serial/console.c27
-rw-r--r--drivers/usb/serial/cp210x.c149
-rw-r--r--drivers/usb/serial/cyberjack.c77
-rw-r--r--drivers/usb/serial/cypress_m8.c197
-rw-r--r--drivers/usb/serial/digi_acceleport.c64
-rw-r--r--drivers/usb/serial/empeg.c7
-rw-r--r--drivers/usb/serial/ezusb.c59
-rw-r--r--drivers/usb/serial/f81232.c11
-rw-r--r--drivers/usb/serial/ftdi_sio.c140
-rw-r--r--drivers/usb/serial/ftdi_sio_ids.h5
-rw-r--r--drivers/usb/serial/funsoft.c5
-rw-r--r--drivers/usb/serial/garmin_gps.c129
-rw-r--r--drivers/usb/serial/generic.c11
-rw-r--r--drivers/usb/serial/io_edgeport.c626
-rw-r--r--drivers/usb/serial/io_ti.c418
-rw-r--r--drivers/usb/serial/ipaq.c4
-rw-r--r--drivers/usb/serial/ipw.c66
-rw-r--r--drivers/usb/serial/ir-usb.c18
-rw-r--r--drivers/usb/serial/iuu_phoenix.c162
-rw-r--r--drivers/usb/serial/keyspan.c344
-rw-r--r--drivers/usb/serial/keyspan.h17
-rw-r--r--drivers/usb/serial/keyspan_pda.c77
-rw-r--r--drivers/usb/serial/kl5kusb105.c59
-rw-r--r--drivers/usb/serial/kobil_sct.c112
-rw-r--r--drivers/usb/serial/mct_u232.c108
-rw-r--r--drivers/usb/serial/metro-usb.c13
-rw-r--r--drivers/usb/serial/mos7720.c241
-rw-r--r--drivers/usb/serial/mos7840.c488
-rw-r--r--drivers/usb/serial/navman.c8
-rw-r--r--drivers/usb/serial/omninet.c43
-rw-r--r--drivers/usb/serial/opticon.c30
-rw-r--r--drivers/usb/serial/option.c23
-rw-r--r--drivers/usb/serial/oti6858.c87
-rw-r--r--drivers/usb/serial/pl2303.c14
-rw-r--r--drivers/usb/serial/qcaux.c10
-rw-r--r--drivers/usb/serial/qcserial.c5
-rw-r--r--drivers/usb/serial/quatech2.c11
-rw-r--r--drivers/usb/serial/safe_serial.c12
-rw-r--r--drivers/usb/serial/sierra.c13
-rw-r--r--drivers/usb/serial/spcp8x5.c17
-rw-r--r--drivers/usb/serial/ssu100.c41
-rw-r--r--drivers/usb/serial/symbolserial.c8
-rw-r--r--drivers/usb/serial/ti_usb_3410_5052.c160
-rw-r--r--drivers/usb/serial/usb-serial.c183
-rw-r--r--drivers/usb/serial/usb_wwan.c58
-rw-r--r--drivers/usb/serial/visor.c13
-rw-r--r--drivers/usb/serial/whiteheat.c137
-rw-r--r--drivers/usb/serial/zte_ev.c307
-rw-r--r--drivers/usb/storage/Kconfig14
-rw-r--r--drivers/usb/storage/Makefile9
-rw-r--r--drivers/usb/storage/alauda.c2
-rw-r--r--drivers/usb/storage/cypress_atacb.c2
-rw-r--r--drivers/usb/storage/datafab.c2
-rw-r--r--drivers/usb/storage/ene_ub6250.c30
-rw-r--r--drivers/usb/storage/freecom.c2
-rw-r--r--drivers/usb/storage/isd200.c5
-rw-r--r--drivers/usb/storage/jumpshot.c2
-rw-r--r--drivers/usb/storage/karma.c2
-rw-r--r--drivers/usb/storage/libusual.c243
-rw-r--r--drivers/usb/storage/onetouch.c2
-rw-r--r--drivers/usb/storage/realtek_cr.c2
-rw-r--r--drivers/usb/storage/sddr09.c2
-rw-r--r--drivers/usb/storage/sddr55.c2
-rw-r--r--drivers/usb/storage/shuttle_usbat.c2
-rw-r--r--drivers/usb/storage/sierra_ms.c3
-rw-r--r--drivers/usb/storage/transport.c2
-rw-r--r--drivers/usb/storage/uas.c107
-rw-r--r--drivers/usb/storage/unusual_devs.h36
-rw-r--r--drivers/usb/storage/usb.c17
-rw-r--r--drivers/usb/storage/usual-tables.c18
-rw-r--r--drivers/usb/wusbcore/Kconfig3
-rw-r--r--drivers/usb/wusbcore/security.c7
-rw-r--r--drivers/usb/wusbcore/wa-hc.c4
-rw-r--r--drivers/vfio/pci/vfio_pci_intrs.c76
-rw-r--r--drivers/video/backlight/88pm860x_bl.c1
-rw-r--r--drivers/video/efifb.c4
-rw-r--r--drivers/video/exynos/exynos_mipi_dsi.c2
-rw-r--r--drivers/video/tmiofb.c4
-rw-r--r--drivers/vme/bridges/vme_ca91cx42.c20
-rw-r--r--drivers/vme/bridges/vme_tsi148.c10
-rw-r--r--drivers/w1/masters/Kconfig1
-rw-r--r--drivers/w1/masters/ds1wm.c2
-rw-r--r--drivers/w1/masters/omap_hdq.c57
-rw-r--r--drivers/w1/masters/w1-gpio.c66
-rw-r--r--drivers/watchdog/hpwdt.c3
-rw-r--r--drivers/watchdog/watchdog_core.c3
-rw-r--r--drivers/xen/Makefile2
-rw-r--r--drivers/xen/dbgp.c48
-rw-r--r--drivers/xen/gntdev.c5
-rw-r--r--drivers/xen/grant-table.c6
-rw-r--r--drivers/xen/xen-pciback/pci_stub.c2
1575 files changed, 114733 insertions, 48455 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 80998958cf4..119d58db834 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -385,8 +385,8 @@ config ACPI_CUSTOM_METHOD
to override that restriction).
config ACPI_BGRT
- tristate "Boottime Graphics Resource Table support"
- default n
+ bool "Boottime Graphics Resource Table support"
+ depends on EFI
help
This driver adds support for exposing the ACPI Boottime Graphics
Resource Table, which allows the operating system to obtain
diff --git a/drivers/acpi/bgrt.c b/drivers/acpi/bgrt.c
index 6680df36b96..be603995854 100644
--- a/drivers/acpi/bgrt.c
+++ b/drivers/acpi/bgrt.c
@@ -1,5 +1,6 @@
/*
* Copyright 2012 Red Hat, Inc <mjg@redhat.com>
+ * Copyright 2012 Intel Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -11,20 +12,10 @@
#include <linux/init.h>
#include <linux/device.h>
#include <linux/sysfs.h>
-#include <linux/io.h>
-#include <acpi/acpi.h>
-#include <acpi/acpi_bus.h>
+#include <linux/efi-bgrt.h>
-static struct acpi_table_bgrt *bgrt_tab;
static struct kobject *bgrt_kobj;
-struct bmp_header {
- u16 id;
- u32 size;
-} __attribute ((packed));
-
-static struct bmp_header bmp_header;
-
static ssize_t show_version(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -63,18 +54,7 @@ static DEVICE_ATTR(yoffset, S_IRUGO, show_yoffset, NULL);
static ssize_t show_image(struct file *file, struct kobject *kobj,
struct bin_attribute *attr, char *buf, loff_t off, size_t count)
{
- int size = attr->size;
- void __iomem *image = attr->private;
-
- if (off >= size) {
- count = 0;
- } else {
- if (off + count > size)
- count = size - off;
-
- memcpy_fromio(buf, image+off, count);
- }
-
+ memcpy(buf, attr->private + off, count);
return count;
}
@@ -101,45 +81,18 @@ static struct attribute_group bgrt_attribute_group = {
static int __init bgrt_init(void)
{
- acpi_status status;
int ret;
- void __iomem *bgrt;
- if (acpi_disabled)
- return -ENODEV;
-
- status = acpi_get_table("BGRT", 0,
- (struct acpi_table_header **)&bgrt_tab);
-
- if (ACPI_FAILURE(status))
+ if (!bgrt_image)
return -ENODEV;
sysfs_bin_attr_init(&image_attr);
-
- bgrt = ioremap(bgrt_tab->image_address, sizeof(struct bmp_header));
-
- if (!bgrt) {
- ret = -EINVAL;
- goto out_err;
- }
-
- memcpy_fromio(&bmp_header, bgrt, sizeof(bmp_header));
- image_attr.size = bmp_header.size;
- iounmap(bgrt);
-
- image_attr.private = ioremap(bgrt_tab->image_address, image_attr.size);
-
- if (!image_attr.private) {
- ret = -EINVAL;
- goto out_err;
- }
-
+ image_attr.private = bgrt_image;
+ image_attr.size = bgrt_image_size;
bgrt_kobj = kobject_create_and_add("bgrt", acpi_kobj);
- if (!bgrt_kobj) {
- ret = -EINVAL;
- goto out_iounmap;
- }
+ if (!bgrt_kobj)
+ return -EINVAL;
ret = sysfs_create_group(bgrt_kobj, &bgrt_attribute_group);
if (ret)
@@ -155,22 +108,11 @@ out_group:
sysfs_remove_group(bgrt_kobj, &bgrt_attribute_group);
out_kobject:
kobject_put(bgrt_kobj);
-out_iounmap:
- iounmap(image_attr.private);
-out_err:
return ret;
}
-static void __exit bgrt_exit(void)
-{
- iounmap(image_attr.private);
- sysfs_remove_group(bgrt_kobj, &bgrt_attribute_group);
- sysfs_remove_bin_file(bgrt_kobj, &image_attr);
-}
-
module_init(bgrt_init);
-module_exit(bgrt_exit);
-MODULE_AUTHOR("Matthew Garrett");
+MODULE_AUTHOR("Matthew Garrett, Josh Triplett <josh@joshtriplett.org>");
MODULE_DESCRIPTION("BGRT boot graphic support");
MODULE_LICENSE("GPL");
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 72a2c98bc42..bce469c0b48 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -27,7 +27,7 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
-#include <linux/spinlock.h>
+#include <linux/mutex.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
#include <linux/pci.h>
@@ -71,9 +71,11 @@ static struct acpi_driver acpi_pci_root_driver = {
},
};
+/* Lock to protect both acpi_pci_roots and acpi_pci_drivers lists */
+static DEFINE_MUTEX(acpi_pci_root_lock);
static LIST_HEAD(acpi_pci_roots);
+static LIST_HEAD(acpi_pci_drivers);
-static struct acpi_pci_driver *sub_driver;
static DEFINE_MUTEX(osc_lock);
int acpi_pci_register_driver(struct acpi_pci_driver *driver)
@@ -81,55 +83,46 @@ int acpi_pci_register_driver(struct acpi_pci_driver *driver)
int n = 0;
struct acpi_pci_root *root;
- struct acpi_pci_driver **pptr = &sub_driver;
- while (*pptr)
- pptr = &(*pptr)->next;
- *pptr = driver;
-
- if (!driver->add)
- return 0;
-
- list_for_each_entry(root, &acpi_pci_roots, node) {
- driver->add(root->device->handle);
- n++;
- }
+ mutex_lock(&acpi_pci_root_lock);
+ list_add_tail(&driver->node, &acpi_pci_drivers);
+ if (driver->add)
+ list_for_each_entry(root, &acpi_pci_roots, node) {
+ driver->add(root);
+ n++;
+ }
+ mutex_unlock(&acpi_pci_root_lock);
return n;
}
-
EXPORT_SYMBOL(acpi_pci_register_driver);
void acpi_pci_unregister_driver(struct acpi_pci_driver *driver)
{
struct acpi_pci_root *root;
- struct acpi_pci_driver **pptr = &sub_driver;
- while (*pptr) {
- if (*pptr == driver)
- break;
- pptr = &(*pptr)->next;
- }
- BUG_ON(!*pptr);
- *pptr = (*pptr)->next;
-
- if (!driver->remove)
- return;
-
- list_for_each_entry(root, &acpi_pci_roots, node)
- driver->remove(root->device->handle);
+ mutex_lock(&acpi_pci_root_lock);
+ list_del(&driver->node);
+ if (driver->remove)
+ list_for_each_entry(root, &acpi_pci_roots, node)
+ driver->remove(root);
+ mutex_unlock(&acpi_pci_root_lock);
}
-
EXPORT_SYMBOL(acpi_pci_unregister_driver);
acpi_handle acpi_get_pci_rootbridge_handle(unsigned int seg, unsigned int bus)
{
struct acpi_pci_root *root;
+ acpi_handle handle = NULL;
+ mutex_lock(&acpi_pci_root_lock);
list_for_each_entry(root, &acpi_pci_roots, node)
if ((root->segment == (u16) seg) &&
- (root->secondary.start == (u16) bus))
- return root->device->handle;
- return NULL;
+ (root->secondary.start == (u16) bus)) {
+ handle = root->device->handle;
+ break;
+ }
+ mutex_unlock(&acpi_pci_root_lock);
+ return handle;
}
EXPORT_SYMBOL_GPL(acpi_get_pci_rootbridge_handle);
@@ -277,12 +270,15 @@ static acpi_status acpi_pci_osc_support(struct acpi_pci_root *root, u32 flags)
struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle)
{
struct acpi_pci_root *root;
+ struct acpi_device *device;
- list_for_each_entry(root, &acpi_pci_roots, node) {
- if (root->device->handle == handle)
- return root;
- }
- return NULL;
+ if (acpi_bus_get_device(handle, &device) ||
+ acpi_match_device_ids(device, root_device_ids))
+ return NULL;
+
+ root = acpi_driver_data(device);
+
+ return root;
}
EXPORT_SYMBOL_GPL(acpi_pci_find_root);
@@ -518,8 +514,9 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
* TBD: Need PCI interface for enumeration/configuration of roots.
*/
- /* TBD: Locking */
+ mutex_lock(&acpi_pci_root_lock);
list_add_tail(&root->node, &acpi_pci_roots);
+ mutex_unlock(&acpi_pci_root_lock);
printk(KERN_INFO PREFIX "%s [%s] (domain %04x %pR)\n",
acpi_device_name(device), acpi_device_bid(device),
@@ -538,7 +535,7 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
"Bus %04x:%02x not present in PCI namespace\n",
root->segment, (unsigned int)root->secondary.start);
result = -ENODEV;
- goto end;
+ goto out_del_root;
}
/*
@@ -548,7 +545,7 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
*/
result = acpi_pci_bind_root(device);
if (result)
- goto end;
+ goto out_del_root;
/*
* PCI Routing Table
@@ -633,9 +630,11 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
return 0;
+out_del_root:
+ mutex_lock(&acpi_pci_root_lock);
+ list_del(&root->node);
+ mutex_unlock(&acpi_pci_root_lock);
end:
- if (!list_empty(&root->node))
- list_del(&root->node);
kfree(root);
return result;
}
@@ -643,18 +642,34 @@ end:
static int acpi_pci_root_start(struct acpi_device *device)
{
struct acpi_pci_root *root = acpi_driver_data(device);
+ struct acpi_pci_driver *driver;
+
+ mutex_lock(&acpi_pci_root_lock);
+ list_for_each_entry(driver, &acpi_pci_drivers, node)
+ if (driver->add)
+ driver->add(root);
+ mutex_unlock(&acpi_pci_root_lock);
pci_bus_add_devices(root->bus);
+
return 0;
}
static int acpi_pci_root_remove(struct acpi_device *device, int type)
{
struct acpi_pci_root *root = acpi_driver_data(device);
+ struct acpi_pci_driver *driver;
+
+ mutex_lock(&acpi_pci_root_lock);
+ list_for_each_entry(driver, &acpi_pci_drivers, node)
+ if (driver->remove)
+ driver->remove(root);
device_set_run_wake(root->bus->bridge, false);
pci_acpi_remove_bus_pm_notifier(device);
+ list_del(&root->node);
+ mutex_unlock(&acpi_pci_root_lock);
kfree(root);
return 0;
}
diff --git a/drivers/acpi/pci_slot.c b/drivers/acpi/pci_slot.c
index e50e31a518a..d22585f21ae 100644
--- a/drivers/acpi/pci_slot.c
+++ b/drivers/acpi/pci_slot.c
@@ -67,8 +67,8 @@ struct acpi_pci_slot {
struct list_head list; /* node in the list of slots */
};
-static int acpi_pci_slot_add(acpi_handle handle);
-static void acpi_pci_slot_remove(acpi_handle handle);
+static int acpi_pci_slot_add(struct acpi_pci_root *root);
+static void acpi_pci_slot_remove(struct acpi_pci_root *root);
static LIST_HEAD(slot_list);
static DEFINE_MUTEX(slot_list_lock);
@@ -233,45 +233,20 @@ out:
/*
* walk_root_bridge - generic root bridge walker
- * @handle: points to an acpi_pci_root
+ * @root: poiner of an acpi_pci_root
* @user_function: user callback for slot objects
*
* Call user_function for all objects underneath this root bridge.
* Walk p2p bridges underneath us and call user_function on those too.
*/
static int
-walk_root_bridge(acpi_handle handle, acpi_walk_callback user_function)
+walk_root_bridge(struct acpi_pci_root *root, acpi_walk_callback user_function)
{
- int seg, bus;
- unsigned long long tmp;
acpi_status status;
- acpi_handle dummy_handle;
- struct pci_bus *pci_bus;
+ acpi_handle handle = root->device->handle;
+ struct pci_bus *pci_bus = root->bus;
struct callback_args context;
- /* If the bridge doesn't have _STA, we assume it is always there */
- status = acpi_get_handle(handle, "_STA", &dummy_handle);
- if (ACPI_SUCCESS(status)) {
- status = acpi_evaluate_integer(handle, "_STA", NULL, &tmp);
- if (ACPI_FAILURE(status)) {
- info("%s: _STA evaluation failure\n", __func__);
- return 0;
- }
- if ((tmp & ACPI_STA_DEVICE_FUNCTIONING) == 0)
- /* don't register this object */
- return 0;
- }
-
- status = acpi_evaluate_integer(handle, "_SEG", NULL, &tmp);
- seg = ACPI_SUCCESS(status) ? tmp : 0;
-
- status = acpi_evaluate_integer(handle, "_BBN", NULL, &tmp);
- bus = ACPI_SUCCESS(status) ? tmp : 0;
-
- pci_bus = pci_find_bus(seg, bus);
- if (!pci_bus)
- return 0;
-
context.pci_bus = pci_bus;
context.user_function = user_function;
context.root_handle = handle;
@@ -295,11 +270,11 @@ walk_root_bridge(acpi_handle handle, acpi_walk_callback user_function)
* @handle: points to an acpi_pci_root
*/
static int
-acpi_pci_slot_add(acpi_handle handle)
+acpi_pci_slot_add(struct acpi_pci_root *root)
{
acpi_status status;
- status = walk_root_bridge(handle, register_slot);
+ status = walk_root_bridge(root, register_slot);
if (ACPI_FAILURE(status))
err("%s: register_slot failure - %d\n", __func__, status);
@@ -311,10 +286,11 @@ acpi_pci_slot_add(acpi_handle handle)
* @handle: points to an acpi_pci_root
*/
static void
-acpi_pci_slot_remove(acpi_handle handle)
+acpi_pci_slot_remove(struct acpi_pci_root *root)
{
struct acpi_pci_slot *slot, *tmp;
struct pci_bus *pbus;
+ acpi_handle handle = root->device->handle;
mutex_lock(&slot_list_lock);
list_for_each_entry_safe(slot, tmp, &slot_list, list) {
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 5e6e00bc165..abea76c36a4 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -184,6 +184,17 @@ static void device_release(struct kobject *kobj)
struct device *dev = kobj_to_dev(kobj);
struct device_private *p = dev->p;
+ /*
+ * Some platform devices are driven without driver attached
+ * and managed resources may have been acquired. Make sure
+ * all resources are released.
+ *
+ * Drivers still can add resources into device after device
+ * is deleted but alive, so release devres here to avoid
+ * possible memory leak.
+ */
+ devres_release_all(dev);
+
if (dev->release)
dev->release(dev);
else if (dev->type && dev->type->release)
@@ -1196,13 +1207,6 @@ void device_del(struct device *dev)
bus_remove_device(dev);
driver_deferred_probe_del(dev);
- /*
- * Some platform devices are driven without driver attached
- * and managed resources may have been acquired. Make sure
- * all resources are released.
- */
- devres_release_all(dev);
-
/* Notify the platform of the removal, in case they
* need to do anything...
*/
@@ -1861,26 +1865,20 @@ void device_shutdown(void)
*/
#ifdef CONFIG_PRINTK
-int __dev_printk(const char *level, const struct device *dev,
- struct va_format *vaf)
+static int
+create_syslog_header(const struct device *dev, char *hdr, size_t hdrlen)
{
- char dict[128];
- const char *level_extra = "";
- size_t dictlen = 0;
const char *subsys;
-
- if (!dev)
- return printk("%s(NULL device *): %pV", level, vaf);
+ size_t pos = 0;
if (dev->class)
subsys = dev->class->name;
else if (dev->bus)
subsys = dev->bus->name;
else
- goto skip;
+ return 0;
- dictlen += snprintf(dict + dictlen, sizeof(dict) - dictlen,
- "SUBSYSTEM=%s", subsys);
+ pos += snprintf(hdr + pos, hdrlen - pos, "SUBSYSTEM=%s", subsys);
/*
* Add device identifier DEVICE=:
@@ -1896,32 +1894,63 @@ int __dev_printk(const char *level, const struct device *dev,
c = 'b';
else
c = 'c';
- dictlen++;
- dictlen += snprintf(dict + dictlen, sizeof(dict) - dictlen,
- "DEVICE=%c%u:%u",
- c, MAJOR(dev->devt), MINOR(dev->devt));
+ pos++;
+ pos += snprintf(hdr + pos, hdrlen - pos,
+ "DEVICE=%c%u:%u",
+ c, MAJOR(dev->devt), MINOR(dev->devt));
} else if (strcmp(subsys, "net") == 0) {
struct net_device *net = to_net_dev(dev);
- dictlen++;
- dictlen += snprintf(dict + dictlen, sizeof(dict) - dictlen,
- "DEVICE=n%u", net->ifindex);
+ pos++;
+ pos += snprintf(hdr + pos, hdrlen - pos,
+ "DEVICE=n%u", net->ifindex);
} else {
- dictlen++;
- dictlen += snprintf(dict + dictlen, sizeof(dict) - dictlen,
- "DEVICE=+%s:%s", subsys, dev_name(dev));
+ pos++;
+ pos += snprintf(hdr + pos, hdrlen - pos,
+ "DEVICE=+%s:%s", subsys, dev_name(dev));
}
-skip:
- if (level[2])
- level_extra = &level[2]; /* skip past KERN_SOH "L" */
- return printk_emit(0, level[1] - '0',
- dictlen ? dict : NULL, dictlen,
- "%s %s: %s%pV",
- dev_driver_string(dev), dev_name(dev),
- level_extra, vaf);
+ return pos;
+}
+EXPORT_SYMBOL(create_syslog_header);
+
+int dev_vprintk_emit(int level, const struct device *dev,
+ const char *fmt, va_list args)
+{
+ char hdr[128];
+ size_t hdrlen;
+
+ hdrlen = create_syslog_header(dev, hdr, sizeof(hdr));
+
+ return vprintk_emit(0, level, hdrlen ? hdr : NULL, hdrlen, fmt, args);
+}
+EXPORT_SYMBOL(dev_vprintk_emit);
+
+int dev_printk_emit(int level, const struct device *dev, const char *fmt, ...)
+{
+ va_list args;
+ int r;
+
+ va_start(args, fmt);
+
+ r = dev_vprintk_emit(level, dev, fmt, args);
+
+ va_end(args);
+
+ return r;
+}
+EXPORT_SYMBOL(dev_printk_emit);
+
+static int __dev_printk(const char *level, const struct device *dev,
+ struct va_format *vaf)
+{
+ if (!dev)
+ return printk("%s(NULL device *): %pV", level, vaf);
+
+ return dev_printk_emit(level[1] - '0', dev,
+ "%s %s: %pV",
+ dev_driver_string(dev), dev_name(dev), vaf);
}
-EXPORT_SYMBOL(__dev_printk);
int dev_printk(const char *level, const struct device *dev,
const char *fmt, ...)
@@ -1936,6 +1965,7 @@ int dev_printk(const char *level, const struct device *dev,
vaf.va = &args;
r = __dev_printk(level, dev, &vaf);
+
va_end(args);
return r;
@@ -1955,6 +1985,7 @@ int func(const struct device *dev, const char *fmt, ...) \
vaf.va = &args; \
\
r = __dev_printk(kern_level, dev, &vaf); \
+ \
va_end(args); \
\
return r; \
diff --git a/drivers/base/devres.c b/drivers/base/devres.c
index 2360adb7a58..8731979d668 100644
--- a/drivers/base/devres.c
+++ b/drivers/base/devres.c
@@ -144,6 +144,48 @@ EXPORT_SYMBOL_GPL(devres_alloc);
#endif
/**
+ * devres_for_each_res - Resource iterator
+ * @dev: Device to iterate resource from
+ * @release: Look for resources associated with this release function
+ * @match: Match function (optional)
+ * @match_data: Data for the match function
+ * @fn: Function to be called for each matched resource.
+ * @data: Data for @fn, the 3rd parameter of @fn
+ *
+ * Call @fn for each devres of @dev which is associated with @release
+ * and for which @match returns 1.
+ *
+ * RETURNS:
+ * void
+ */
+void devres_for_each_res(struct device *dev, dr_release_t release,
+ dr_match_t match, void *match_data,
+ void (*fn)(struct device *, void *, void *),
+ void *data)
+{
+ struct devres_node *node;
+ struct devres_node *tmp;
+ unsigned long flags;
+
+ if (!fn)
+ return;
+
+ spin_lock_irqsave(&dev->devres_lock, flags);
+ list_for_each_entry_safe_reverse(node, tmp,
+ &dev->devres_head, entry) {
+ struct devres *dr = container_of(node, struct devres, node);
+
+ if (node->release != release)
+ continue;
+ if (match && !match(dev, dr->data, match_data))
+ continue;
+ fn(dev, dr->data, data);
+ }
+ spin_unlock_irqrestore(&dev->devres_lock, flags);
+}
+EXPORT_SYMBOL_GPL(devres_for_each_res);
+
+/**
* devres_free - Free device resource data
* @res: Pointer to devres data to free
*
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index 803cfc1597a..6e210802c37 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -21,6 +21,13 @@
#include <linux/firmware.h>
#include <linux/slab.h>
#include <linux/sched.h>
+#include <linux/list.h>
+#include <linux/async.h>
+#include <linux/pm.h>
+#include <linux/suspend.h>
+#include <linux/syscore_ops.h>
+
+#include "base.h"
MODULE_AUTHOR("Manuel Estrada Sainz");
MODULE_DESCRIPTION("Multi purpose firmware loading support");
@@ -85,23 +92,168 @@ static inline long firmware_loading_timeout(void)
return loading_timeout > 0 ? loading_timeout * HZ : MAX_SCHEDULE_TIMEOUT;
}
-/* fw_lock could be moved to 'struct firmware_priv' but since it is just
- * guarding for corner cases a global lock should be OK */
-static DEFINE_MUTEX(fw_lock);
+struct firmware_cache {
+ /* firmware_buf instance will be added into the below list */
+ spinlock_t lock;
+ struct list_head head;
+ int state;
+
+#ifdef CONFIG_PM_SLEEP
+ /*
+ * Names of firmware images which have been cached successfully
+ * will be added into the below list so that device uncache
+ * helper can trace which firmware images have been cached
+ * before.
+ */
+ spinlock_t name_lock;
+ struct list_head fw_names;
+
+ wait_queue_head_t wait_queue;
+ int cnt;
+ struct delayed_work work;
+
+ struct notifier_block pm_notify;
+#endif
+};
-struct firmware_priv {
+struct firmware_buf {
+ struct kref ref;
+ struct list_head list;
struct completion completion;
- struct firmware *fw;
+ struct firmware_cache *fwc;
unsigned long status;
+ void *data;
+ size_t size;
struct page **pages;
int nr_pages;
int page_array_size;
+ char fw_id[];
+};
+
+struct fw_cache_entry {
+ struct list_head list;
+ char name[];
+};
+
+struct firmware_priv {
struct timer_list timeout;
- struct device dev;
bool nowait;
- char fw_id[];
+ struct device dev;
+ struct firmware_buf *buf;
+ struct firmware *fw;
+};
+
+struct fw_name_devm {
+ unsigned long magic;
+ char name[];
};
+#define to_fwbuf(d) container_of(d, struct firmware_buf, ref)
+
+#define FW_LOADER_NO_CACHE 0
+#define FW_LOADER_START_CACHE 1
+
+static int fw_cache_piggyback_on_request(const char *name);
+
+/* fw_lock could be moved to 'struct firmware_priv' but since it is just
+ * guarding for corner cases a global lock should be OK */
+static DEFINE_MUTEX(fw_lock);
+
+static struct firmware_cache fw_cache;
+
+static struct firmware_buf *__allocate_fw_buf(const char *fw_name,
+ struct firmware_cache *fwc)
+{
+ struct firmware_buf *buf;
+
+ buf = kzalloc(sizeof(*buf) + strlen(fw_name) + 1 , GFP_ATOMIC);
+
+ if (!buf)
+ return buf;
+
+ kref_init(&buf->ref);
+ strcpy(buf->fw_id, fw_name);
+ buf->fwc = fwc;
+ init_completion(&buf->completion);
+
+ pr_debug("%s: fw-%s buf=%p\n", __func__, fw_name, buf);
+
+ return buf;
+}
+
+static struct firmware_buf *__fw_lookup_buf(const char *fw_name)
+{
+ struct firmware_buf *tmp;
+ struct firmware_cache *fwc = &fw_cache;
+
+ list_for_each_entry(tmp, &fwc->head, list)
+ if (!strcmp(tmp->fw_id, fw_name))
+ return tmp;
+ return NULL;
+}
+
+static int fw_lookup_and_allocate_buf(const char *fw_name,
+ struct firmware_cache *fwc,
+ struct firmware_buf **buf)
+{
+ struct firmware_buf *tmp;
+
+ spin_lock(&fwc->lock);
+ tmp = __fw_lookup_buf(fw_name);
+ if (tmp) {
+ kref_get(&tmp->ref);
+ spin_unlock(&fwc->lock);
+ *buf = tmp;
+ return 1;
+ }
+ tmp = __allocate_fw_buf(fw_name, fwc);
+ if (tmp)
+ list_add(&tmp->list, &fwc->head);
+ spin_unlock(&fwc->lock);
+
+ *buf = tmp;
+
+ return tmp ? 0 : -ENOMEM;
+}
+
+static struct firmware_buf *fw_lookup_buf(const char *fw_name)
+{
+ struct firmware_buf *tmp;
+ struct firmware_cache *fwc = &fw_cache;
+
+ spin_lock(&fwc->lock);
+ tmp = __fw_lookup_buf(fw_name);
+ spin_unlock(&fwc->lock);
+
+ return tmp;
+}
+
+static void __fw_free_buf(struct kref *ref)
+{
+ struct firmware_buf *buf = to_fwbuf(ref);
+ struct firmware_cache *fwc = buf->fwc;
+ int i;
+
+ pr_debug("%s: fw-%s buf=%p data=%p size=%u\n",
+ __func__, buf->fw_id, buf, buf->data,
+ (unsigned int)buf->size);
+
+ spin_lock(&fwc->lock);
+ list_del(&buf->list);
+ spin_unlock(&fwc->lock);
+
+ vunmap(buf->data);
+ for (i = 0; i < buf->nr_pages; i++)
+ __free_page(buf->pages[i]);
+ kfree(buf->pages);
+ kfree(buf);
+}
+
+static void fw_free_buf(struct firmware_buf *buf)
+{
+ kref_put(&buf->ref, __fw_free_buf);
+}
+
static struct firmware_priv *to_firmware_priv(struct device *dev)
{
return container_of(dev, struct firmware_priv, dev);
@@ -109,9 +261,10 @@ static struct firmware_priv *to_firmware_priv(struct device *dev)
static void fw_load_abort(struct firmware_priv *fw_priv)
{
- set_bit(FW_STATUS_ABORT, &fw_priv->status);
- wmb();
- complete(&fw_priv->completion);
+ struct firmware_buf *buf = fw_priv->buf;
+
+ set_bit(FW_STATUS_ABORT, &buf->status);
+ complete_all(&buf->completion);
}
static ssize_t firmware_timeout_show(struct class *class,
@@ -154,11 +307,7 @@ static struct class_attribute firmware_class_attrs[] = {
static void fw_dev_release(struct device *dev)
{
struct firmware_priv *fw_priv = to_firmware_priv(dev);
- int i;
- for (i = 0; i < fw_priv->nr_pages; i++)
- __free_page(fw_priv->pages[i]);
- kfree(fw_priv->pages);
kfree(fw_priv);
module_put(THIS_MODULE);
@@ -168,7 +317,7 @@ static int firmware_uevent(struct device *dev, struct kobj_uevent_env *env)
{
struct firmware_priv *fw_priv = to_firmware_priv(dev);
- if (add_uevent_var(env, "FIRMWARE=%s", fw_priv->fw_id))
+ if (add_uevent_var(env, "FIRMWARE=%s", fw_priv->buf->fw_id))
return -ENOMEM;
if (add_uevent_var(env, "TIMEOUT=%i", loading_timeout))
return -ENOMEM;
@@ -189,20 +338,16 @@ static ssize_t firmware_loading_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct firmware_priv *fw_priv = to_firmware_priv(dev);
- int loading = test_bit(FW_STATUS_LOADING, &fw_priv->status);
+ int loading = test_bit(FW_STATUS_LOADING, &fw_priv->buf->status);
return sprintf(buf, "%d\n", loading);
}
+/* firmware holds the ownership of pages */
static void firmware_free_data(const struct firmware *fw)
{
- int i;
- vunmap(fw->data);
- if (fw->pages) {
- for (i = 0; i < PFN_UP(fw->size); i++)
- __free_page(fw->pages[i]);
- kfree(fw->pages);
- }
+ WARN_ON(!fw->priv);
+ fw_free_buf(fw->priv);
}
/* Some architectures don't have PAGE_KERNEL_RO */
@@ -227,45 +372,33 @@ static ssize_t firmware_loading_store(struct device *dev,
const char *buf, size_t count)
{
struct firmware_priv *fw_priv = to_firmware_priv(dev);
+ struct firmware_buf *fw_buf = fw_priv->buf;
int loading = simple_strtol(buf, NULL, 10);
int i;
mutex_lock(&fw_lock);
- if (!fw_priv->fw)
+ if (!fw_buf)
goto out;
switch (loading) {
case 1:
- firmware_free_data(fw_priv->fw);
- memset(fw_priv->fw, 0, sizeof(struct firmware));
- /* If the pages are not owned by 'struct firmware' */
- for (i = 0; i < fw_priv->nr_pages; i++)
- __free_page(fw_priv->pages[i]);
- kfree(fw_priv->pages);
- fw_priv->pages = NULL;
- fw_priv->page_array_size = 0;
- fw_priv->nr_pages = 0;
- set_bit(FW_STATUS_LOADING, &fw_priv->status);
+ /* discarding any previous partial load */
+ if (!test_bit(FW_STATUS_DONE, &fw_buf->status)) {
+ for (i = 0; i < fw_buf->nr_pages; i++)
+ __free_page(fw_buf->pages[i]);
+ kfree(fw_buf->pages);
+ fw_buf->pages = NULL;
+ fw_buf->page_array_size = 0;
+ fw_buf->nr_pages = 0;
+ set_bit(FW_STATUS_LOADING, &fw_buf->status);
+ }
break;
case 0:
- if (test_bit(FW_STATUS_LOADING, &fw_priv->status)) {
- vunmap(fw_priv->fw->data);
- fw_priv->fw->data = vmap(fw_priv->pages,
- fw_priv->nr_pages,
- 0, PAGE_KERNEL_RO);
- if (!fw_priv->fw->data) {
- dev_err(dev, "%s: vmap() failed\n", __func__);
- goto err;
- }
- /* Pages are now owned by 'struct firmware' */
- fw_priv->fw->pages = fw_priv->pages;
- fw_priv->pages = NULL;
-
- fw_priv->page_array_size = 0;
- fw_priv->nr_pages = 0;
- complete(&fw_priv->completion);
- clear_bit(FW_STATUS_LOADING, &fw_priv->status);
+ if (test_bit(FW_STATUS_LOADING, &fw_buf->status)) {
+ set_bit(FW_STATUS_DONE, &fw_buf->status);
+ clear_bit(FW_STATUS_LOADING, &fw_buf->status);
+ complete_all(&fw_buf->completion);
break;
}
/* fallthrough */
@@ -273,7 +406,6 @@ static ssize_t firmware_loading_store(struct device *dev,
dev_err(dev, "%s: unexpected value (%d)\n", __func__, loading);
/* fallthrough */
case -1:
- err:
fw_load_abort(fw_priv);
break;
}
@@ -290,21 +422,21 @@ static ssize_t firmware_data_read(struct file *filp, struct kobject *kobj,
{
struct device *dev = kobj_to_dev(kobj);
struct firmware_priv *fw_priv = to_firmware_priv(dev);
- struct firmware *fw;
+ struct firmware_buf *buf;
ssize_t ret_count;
mutex_lock(&fw_lock);
- fw = fw_priv->fw;
- if (!fw || test_bit(FW_STATUS_DONE, &fw_priv->status)) {
+ buf = fw_priv->buf;
+ if (!buf || test_bit(FW_STATUS_DONE, &buf->status)) {
ret_count = -ENODEV;
goto out;
}
- if (offset > fw->size) {
+ if (offset > buf->size) {
ret_count = 0;
goto out;
}
- if (count > fw->size - offset)
- count = fw->size - offset;
+ if (count > buf->size - offset)
+ count = buf->size - offset;
ret_count = count;
@@ -314,11 +446,11 @@ static ssize_t firmware_data_read(struct file *filp, struct kobject *kobj,
int page_ofs = offset & (PAGE_SIZE-1);
int page_cnt = min_t(size_t, PAGE_SIZE - page_ofs, count);
- page_data = kmap(fw_priv->pages[page_nr]);
+ page_data = kmap(buf->pages[page_nr]);
memcpy(buffer, page_data + page_ofs, page_cnt);
- kunmap(fw_priv->pages[page_nr]);
+ kunmap(buf->pages[page_nr]);
buffer += page_cnt;
offset += page_cnt;
count -= page_cnt;
@@ -330,12 +462,13 @@ out:
static int fw_realloc_buffer(struct firmware_priv *fw_priv, int min_size)
{
+ struct firmware_buf *buf = fw_priv->buf;
int pages_needed = ALIGN(min_size, PAGE_SIZE) >> PAGE_SHIFT;
/* If the array of pages is too small, grow it... */
- if (fw_priv->page_array_size < pages_needed) {
+ if (buf->page_array_size < pages_needed) {
int new_array_size = max(pages_needed,
- fw_priv->page_array_size * 2);
+ buf->page_array_size * 2);
struct page **new_pages;
new_pages = kmalloc(new_array_size * sizeof(void *),
@@ -344,24 +477,24 @@ static int fw_realloc_buffer(struct firmware_priv *fw_priv, int min_size)
fw_load_abort(fw_priv);
return -ENOMEM;
}
- memcpy(new_pages, fw_priv->pages,
- fw_priv->page_array_size * sizeof(void *));
- memset(&new_pages[fw_priv->page_array_size], 0, sizeof(void *) *
- (new_array_size - fw_priv->page_array_size));
- kfree(fw_priv->pages);
- fw_priv->pages = new_pages;
- fw_priv->page_array_size = new_array_size;
+ memcpy(new_pages, buf->pages,
+ buf->page_array_size * sizeof(void *));
+ memset(&new_pages[buf->page_array_size], 0, sizeof(void *) *
+ (new_array_size - buf->page_array_size));
+ kfree(buf->pages);
+ buf->pages = new_pages;
+ buf->page_array_size = new_array_size;
}
- while (fw_priv->nr_pages < pages_needed) {
- fw_priv->pages[fw_priv->nr_pages] =
+ while (buf->nr_pages < pages_needed) {
+ buf->pages[buf->nr_pages] =
alloc_page(GFP_KERNEL | __GFP_HIGHMEM);
- if (!fw_priv->pages[fw_priv->nr_pages]) {
+ if (!buf->pages[buf->nr_pages]) {
fw_load_abort(fw_priv);
return -ENOMEM;
}
- fw_priv->nr_pages++;
+ buf->nr_pages++;
}
return 0;
}
@@ -384,18 +517,19 @@ static ssize_t firmware_data_write(struct file *filp, struct kobject *kobj,
{
struct device *dev = kobj_to_dev(kobj);
struct firmware_priv *fw_priv = to_firmware_priv(dev);
- struct firmware *fw;
+ struct firmware_buf *buf;
ssize_t retval;
if (!capable(CAP_SYS_RAWIO))
return -EPERM;
mutex_lock(&fw_lock);
- fw = fw_priv->fw;
- if (!fw || test_bit(FW_STATUS_DONE, &fw_priv->status)) {
+ buf = fw_priv->buf;
+ if (!buf || test_bit(FW_STATUS_DONE, &buf->status)) {
retval = -ENODEV;
goto out;
}
+
retval = fw_realloc_buffer(fw_priv, offset + count);
if (retval)
goto out;
@@ -408,17 +542,17 @@ static ssize_t firmware_data_write(struct file *filp, struct kobject *kobj,
int page_ofs = offset & (PAGE_SIZE - 1);
int page_cnt = min_t(size_t, PAGE_SIZE - page_ofs, count);
- page_data = kmap(fw_priv->pages[page_nr]);
+ page_data = kmap(buf->pages[page_nr]);
memcpy(page_data + page_ofs, buffer, page_cnt);
- kunmap(fw_priv->pages[page_nr]);
+ kunmap(buf->pages[page_nr]);
buffer += page_cnt;
offset += page_cnt;
count -= page_cnt;
}
- fw->size = max_t(size_t, offset, fw->size);
+ buf->size = max_t(size_t, offset, buf->size);
out:
mutex_unlock(&fw_lock);
return retval;
@@ -445,35 +579,120 @@ fw_create_instance(struct firmware *firmware, const char *fw_name,
struct firmware_priv *fw_priv;
struct device *f_dev;
- fw_priv = kzalloc(sizeof(*fw_priv) + strlen(fw_name) + 1 , GFP_KERNEL);
+ fw_priv = kzalloc(sizeof(*fw_priv), GFP_KERNEL);
if (!fw_priv) {
dev_err(device, "%s: kmalloc failed\n", __func__);
- return ERR_PTR(-ENOMEM);
+ fw_priv = ERR_PTR(-ENOMEM);
+ goto exit;
}
- fw_priv->fw = firmware;
fw_priv->nowait = nowait;
- strcpy(fw_priv->fw_id, fw_name);
- init_completion(&fw_priv->completion);
+ fw_priv->fw = firmware;
setup_timer(&fw_priv->timeout,
firmware_class_timeout, (u_long) fw_priv);
f_dev = &fw_priv->dev;
device_initialize(f_dev);
- dev_set_name(f_dev, "%s", dev_name(device));
+ dev_set_name(f_dev, "%s", fw_name);
f_dev->parent = device;
f_dev->class = &firmware_class;
-
+exit:
return fw_priv;
}
+/* one pages buffer is mapped/unmapped only once */
+static int fw_map_pages_buf(struct firmware_buf *buf)
+{
+ buf->data = vmap(buf->pages, buf->nr_pages, 0, PAGE_KERNEL_RO);
+ if (!buf->data)
+ return -ENOMEM;
+ return 0;
+}
+
+/* store the pages buffer info firmware from buf */
+static void fw_set_page_data(struct firmware_buf *buf, struct firmware *fw)
+{
+ fw->priv = buf;
+ fw->pages = buf->pages;
+ fw->size = buf->size;
+ fw->data = buf->data;
+
+ pr_debug("%s: fw-%s buf=%p data=%p size=%u\n",
+ __func__, buf->fw_id, buf, buf->data,
+ (unsigned int)buf->size);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static void fw_name_devm_release(struct device *dev, void *res)
+{
+ struct fw_name_devm *fwn = res;
+
+ if (fwn->magic == (unsigned long)&fw_cache)
+ pr_debug("%s: fw_name-%s devm-%p released\n",
+ __func__, fwn->name, res);
+}
+
+static int fw_devm_match(struct device *dev, void *res,
+ void *match_data)
+{
+ struct fw_name_devm *fwn = res;
+
+ return (fwn->magic == (unsigned long)&fw_cache) &&
+ !strcmp(fwn->name, match_data);
+}
+
+static struct fw_name_devm *fw_find_devm_name(struct device *dev,
+ const char *name)
+{
+ struct fw_name_devm *fwn;
+
+ fwn = devres_find(dev, fw_name_devm_release,
+ fw_devm_match, (void *)name);
+ return fwn;
+}
+
+/* add firmware name into devres list */
+static int fw_add_devm_name(struct device *dev, const char *name)
+{
+ struct fw_name_devm *fwn;
+
+ fwn = fw_find_devm_name(dev, name);
+ if (fwn)
+ return 1;
+
+ fwn = devres_alloc(fw_name_devm_release, sizeof(struct fw_name_devm) +
+ strlen(name) + 1, GFP_KERNEL);
+ if (!fwn)
+ return -ENOMEM;
+
+ fwn->magic = (unsigned long)&fw_cache;
+ strcpy(fwn->name, name);
+ devres_add(dev, fwn);
+
+ return 0;
+}
+#else
+static int fw_add_devm_name(struct device *dev, const char *name)
+{
+ return 0;
+}
+#endif
+
+static void _request_firmware_cleanup(const struct firmware **firmware_p)
+{
+ release_firmware(*firmware_p);
+ *firmware_p = NULL;
+}
+
static struct firmware_priv *
_request_firmware_prepare(const struct firmware **firmware_p, const char *name,
struct device *device, bool uevent, bool nowait)
{
struct firmware *firmware;
- struct firmware_priv *fw_priv;
+ struct firmware_priv *fw_priv = NULL;
+ struct firmware_buf *buf;
+ int ret;
if (!firmware_p)
return ERR_PTR(-EINVAL);
@@ -490,18 +709,46 @@ _request_firmware_prepare(const struct firmware **firmware_p, const char *name,
return NULL;
}
- fw_priv = fw_create_instance(firmware, name, device, uevent, nowait);
- if (IS_ERR(fw_priv)) {
- release_firmware(firmware);
+ ret = fw_lookup_and_allocate_buf(name, &fw_cache, &buf);
+ if (!ret)
+ fw_priv = fw_create_instance(firmware, name, device,
+ uevent, nowait);
+
+ if (IS_ERR(fw_priv) || ret < 0) {
+ kfree(firmware);
*firmware_p = NULL;
+ return ERR_PTR(-ENOMEM);
+ } else if (fw_priv) {
+ fw_priv->buf = buf;
+
+ /*
+ * bind with 'buf' now to avoid warning in failure path
+ * of requesting firmware.
+ */
+ firmware->priv = buf;
+ return fw_priv;
}
- return fw_priv;
-}
-static void _request_firmware_cleanup(const struct firmware **firmware_p)
-{
- release_firmware(*firmware_p);
- *firmware_p = NULL;
+ /* share the cached buf, which is inprogessing or completed */
+ check_status:
+ mutex_lock(&fw_lock);
+ if (test_bit(FW_STATUS_ABORT, &buf->status)) {
+ fw_priv = ERR_PTR(-ENOENT);
+ firmware->priv = buf;
+ _request_firmware_cleanup(firmware_p);
+ goto exit;
+ } else if (test_bit(FW_STATUS_DONE, &buf->status)) {
+ fw_priv = NULL;
+ fw_set_page_data(buf, firmware);
+ goto exit;
+ }
+ mutex_unlock(&fw_lock);
+ wait_for_completion(&buf->completion);
+ goto check_status;
+
+exit:
+ mutex_unlock(&fw_lock);
+ return fw_priv;
}
static int _request_firmware_load(struct firmware_priv *fw_priv, bool uevent,
@@ -509,6 +756,8 @@ static int _request_firmware_load(struct firmware_priv *fw_priv, bool uevent,
{
int retval = 0;
struct device *f_dev = &fw_priv->dev;
+ struct firmware_buf *buf = fw_priv->buf;
+ struct firmware_cache *fwc = &fw_cache;
dev_set_uevent_suppress(f_dev, true);
@@ -535,7 +784,7 @@ static int _request_firmware_load(struct firmware_priv *fw_priv, bool uevent,
if (uevent) {
dev_set_uevent_suppress(f_dev, false);
- dev_dbg(f_dev, "firmware: requesting %s\n", fw_priv->fw_id);
+ dev_dbg(f_dev, "firmware: requesting %s\n", buf->fw_id);
if (timeout != MAX_SCHEDULE_TIMEOUT)
mod_timer(&fw_priv->timeout,
round_jiffies_up(jiffies + timeout));
@@ -543,15 +792,40 @@ static int _request_firmware_load(struct firmware_priv *fw_priv, bool uevent,
kobject_uevent(&fw_priv->dev.kobj, KOBJ_ADD);
}
- wait_for_completion(&fw_priv->completion);
+ wait_for_completion(&buf->completion);
- set_bit(FW_STATUS_DONE, &fw_priv->status);
del_timer_sync(&fw_priv->timeout);
mutex_lock(&fw_lock);
- if (!fw_priv->fw->size || test_bit(FW_STATUS_ABORT, &fw_priv->status))
+ if (!buf->size || test_bit(FW_STATUS_ABORT, &buf->status))
retval = -ENOENT;
- fw_priv->fw = NULL;
+
+ /*
+ * add firmware name into devres list so that we can auto cache
+ * and uncache firmware for device.
+ *
+ * f_dev->parent may has been deleted already, but the problem
+ * should be fixed in devres or driver core.
+ */
+ if (!retval && f_dev->parent)
+ fw_add_devm_name(f_dev->parent, buf->fw_id);
+
+ if (!retval)
+ retval = fw_map_pages_buf(buf);
+
+ /*
+ * After caching firmware image is started, let it piggyback
+ * on request firmware.
+ */
+ if (!retval && fwc->state == FW_LOADER_START_CACHE) {
+ if (fw_cache_piggyback_on_request(buf->fw_id))
+ kref_get(&buf->ref);
+ }
+
+ /* pass the pages buffer to driver at the last minute */
+ fw_set_page_data(buf, fw_priv->fw);
+
+ fw_priv->buf = NULL;
mutex_unlock(&fw_lock);
device_remove_file(f_dev, &dev_attr_loading);
@@ -578,6 +852,8 @@ err_put_dev:
* @name will be used as $FIRMWARE in the uevent environment and
* should be distinctive enough not to be confused with any other
* firmware image for this or any other device.
+ *
+ * Caller must hold the reference count of @device.
**/
int
request_firmware(const struct firmware **firmware_p, const char *name,
@@ -659,6 +935,7 @@ static void request_firmware_work_func(struct work_struct *work)
out:
fw_work->cont(fw, fw_work->context);
+ put_device(fw_work->device);
module_put(fw_work->module);
kfree(fw_work);
@@ -677,9 +954,15 @@ static void request_firmware_work_func(struct work_struct *work)
* @cont: function will be called asynchronously when the firmware
* request is over.
*
- * Asynchronous variant of request_firmware() for user contexts where
- * it is not possible to sleep for long time. It can't be called
- * in atomic contexts.
+ * Caller must hold the reference count of @device.
+ *
+ * Asynchronous variant of request_firmware() for user contexts:
+ * - sleep for as small periods as possible since it may
+ * increase kernel boot time of built-in device drivers
+ * requesting firmware in their ->probe() methods, if
+ * @gfp is GFP_KERNEL.
+ *
+ * - can't sleep at all if @gfp is GFP_ATOMIC.
**/
int
request_firmware_nowait(
@@ -705,18 +988,363 @@ request_firmware_nowait(
return -EFAULT;
}
+ get_device(fw_work->device);
INIT_WORK(&fw_work->work, request_firmware_work_func);
schedule_work(&fw_work->work);
return 0;
}
+/**
+ * cache_firmware - cache one firmware image in kernel memory space
+ * @fw_name: the firmware image name
+ *
+ * Cache firmware in kernel memory so that drivers can use it when
+ * system isn't ready for them to request firmware image from userspace.
+ * Once it returns successfully, driver can use request_firmware or its
+ * nowait version to get the cached firmware without any interacting
+ * with userspace
+ *
+ * Return 0 if the firmware image has been cached successfully
+ * Return !0 otherwise
+ *
+ */
+int cache_firmware(const char *fw_name)
+{
+ int ret;
+ const struct firmware *fw;
+
+ pr_debug("%s: %s\n", __func__, fw_name);
+
+ ret = request_firmware(&fw, fw_name, NULL);
+ if (!ret)
+ kfree(fw);
+
+ pr_debug("%s: %s ret=%d\n", __func__, fw_name, ret);
+
+ return ret;
+}
+
+/**
+ * uncache_firmware - remove one cached firmware image
+ * @fw_name: the firmware image name
+ *
+ * Uncache one firmware image which has been cached successfully
+ * before.
+ *
+ * Return 0 if the firmware cache has been removed successfully
+ * Return !0 otherwise
+ *
+ */
+int uncache_firmware(const char *fw_name)
+{
+ struct firmware_buf *buf;
+ struct firmware fw;
+
+ pr_debug("%s: %s\n", __func__, fw_name);
+
+ if (fw_get_builtin_firmware(&fw, fw_name))
+ return 0;
+
+ buf = fw_lookup_buf(fw_name);
+ if (buf) {
+ fw_free_buf(buf);
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static struct fw_cache_entry *alloc_fw_cache_entry(const char *name)
+{
+ struct fw_cache_entry *fce;
+
+ fce = kzalloc(sizeof(*fce) + strlen(name) + 1, GFP_ATOMIC);
+ if (!fce)
+ goto exit;
+
+ strcpy(fce->name, name);
+exit:
+ return fce;
+}
+
+static int fw_cache_piggyback_on_request(const char *name)
+{
+ struct firmware_cache *fwc = &fw_cache;
+ struct fw_cache_entry *fce;
+ int ret = 0;
+
+ spin_lock(&fwc->name_lock);
+ list_for_each_entry(fce, &fwc->fw_names, list) {
+ if (!strcmp(fce->name, name))
+ goto found;
+ }
+
+ fce = alloc_fw_cache_entry(name);
+ if (fce) {
+ ret = 1;
+ list_add(&fce->list, &fwc->fw_names);
+ pr_debug("%s: fw: %s\n", __func__, name);
+ }
+found:
+ spin_unlock(&fwc->name_lock);
+ return ret;
+}
+
+static void free_fw_cache_entry(struct fw_cache_entry *fce)
+{
+ kfree(fce);
+}
+
+static void __async_dev_cache_fw_image(void *fw_entry,
+ async_cookie_t cookie)
+{
+ struct fw_cache_entry *fce = fw_entry;
+ struct firmware_cache *fwc = &fw_cache;
+ int ret;
+
+ ret = cache_firmware(fce->name);
+ if (ret) {
+ spin_lock(&fwc->name_lock);
+ list_del(&fce->list);
+ spin_unlock(&fwc->name_lock);
+
+ free_fw_cache_entry(fce);
+ }
+
+ spin_lock(&fwc->name_lock);
+ fwc->cnt--;
+ spin_unlock(&fwc->name_lock);
+
+ wake_up(&fwc->wait_queue);
+}
+
+/* called with dev->devres_lock held */
+static void dev_create_fw_entry(struct device *dev, void *res,
+ void *data)
+{
+ struct fw_name_devm *fwn = res;
+ const char *fw_name = fwn->name;
+ struct list_head *head = data;
+ struct fw_cache_entry *fce;
+
+ fce = alloc_fw_cache_entry(fw_name);
+ if (fce)
+ list_add(&fce->list, head);
+}
+
+static int devm_name_match(struct device *dev, void *res,
+ void *match_data)
+{
+ struct fw_name_devm *fwn = res;
+ return (fwn->magic == (unsigned long)match_data);
+}
+
+static void dev_cache_fw_image(struct device *dev, void *data)
+{
+ LIST_HEAD(todo);
+ struct fw_cache_entry *fce;
+ struct fw_cache_entry *fce_next;
+ struct firmware_cache *fwc = &fw_cache;
+
+ devres_for_each_res(dev, fw_name_devm_release,
+ devm_name_match, &fw_cache,
+ dev_create_fw_entry, &todo);
+
+ list_for_each_entry_safe(fce, fce_next, &todo, list) {
+ list_del(&fce->list);
+
+ spin_lock(&fwc->name_lock);
+ fwc->cnt++;
+ list_add(&fce->list, &fwc->fw_names);
+ spin_unlock(&fwc->name_lock);
+
+ async_schedule(__async_dev_cache_fw_image, (void *)fce);
+ }
+}
+
+static void __device_uncache_fw_images(void)
+{
+ struct firmware_cache *fwc = &fw_cache;
+ struct fw_cache_entry *fce;
+
+ spin_lock(&fwc->name_lock);
+ while (!list_empty(&fwc->fw_names)) {
+ fce = list_entry(fwc->fw_names.next,
+ struct fw_cache_entry, list);
+ list_del(&fce->list);
+ spin_unlock(&fwc->name_lock);
+
+ uncache_firmware(fce->name);
+ free_fw_cache_entry(fce);
+
+ spin_lock(&fwc->name_lock);
+ }
+ spin_unlock(&fwc->name_lock);
+}
+
+/**
+ * device_cache_fw_images - cache devices' firmware
+ *
+ * If one device called request_firmware or its nowait version
+ * successfully before, the firmware names are recored into the
+ * device's devres link list, so device_cache_fw_images can call
+ * cache_firmware() to cache these firmwares for the device,
+ * then the device driver can load its firmwares easily at
+ * time when system is not ready to complete loading firmware.
+ */
+static void device_cache_fw_images(void)
+{
+ struct firmware_cache *fwc = &fw_cache;
+ int old_timeout;
+ DEFINE_WAIT(wait);
+
+ pr_debug("%s\n", __func__);
+
+ /*
+ * use small loading timeout for caching devices' firmware
+ * because all these firmware images have been loaded
+ * successfully at lease once, also system is ready for
+ * completing firmware loading now. The maximum size of
+ * firmware in current distributions is about 2M bytes,
+ * so 10 secs should be enough.
+ */
+ old_timeout = loading_timeout;
+ loading_timeout = 10;
+
+ mutex_lock(&fw_lock);
+ fwc->state = FW_LOADER_START_CACHE;
+ dpm_for_each_dev(NULL, dev_cache_fw_image);
+ mutex_unlock(&fw_lock);
+
+ /* wait for completion of caching firmware for all devices */
+ spin_lock(&fwc->name_lock);
+ for (;;) {
+ prepare_to_wait(&fwc->wait_queue, &wait,
+ TASK_UNINTERRUPTIBLE);
+ if (!fwc->cnt)
+ break;
+
+ spin_unlock(&fwc->name_lock);
+
+ schedule();
+
+ spin_lock(&fwc->name_lock);
+ }
+ spin_unlock(&fwc->name_lock);
+ finish_wait(&fwc->wait_queue, &wait);
+
+ loading_timeout = old_timeout;
+}
+
+/**
+ * device_uncache_fw_images - uncache devices' firmware
+ *
+ * uncache all firmwares which have been cached successfully
+ * by device_uncache_fw_images earlier
+ */
+static void device_uncache_fw_images(void)
+{
+ pr_debug("%s\n", __func__);
+ __device_uncache_fw_images();
+}
+
+static void device_uncache_fw_images_work(struct work_struct *work)
+{
+ device_uncache_fw_images();
+}
+
+/**
+ * device_uncache_fw_images_delay - uncache devices firmwares
+ * @delay: number of milliseconds to delay uncache device firmwares
+ *
+ * uncache all devices's firmwares which has been cached successfully
+ * by device_cache_fw_images after @delay milliseconds.
+ */
+static void device_uncache_fw_images_delay(unsigned long delay)
+{
+ schedule_delayed_work(&fw_cache.work,
+ msecs_to_jiffies(delay));
+}
+
+static int fw_pm_notify(struct notifier_block *notify_block,
+ unsigned long mode, void *unused)
+{
+ switch (mode) {
+ case PM_HIBERNATION_PREPARE:
+ case PM_SUSPEND_PREPARE:
+ device_cache_fw_images();
+ break;
+
+ case PM_POST_SUSPEND:
+ case PM_POST_HIBERNATION:
+ case PM_POST_RESTORE:
+ /*
+ * In case that system sleep failed and syscore_suspend is
+ * not called.
+ */
+ mutex_lock(&fw_lock);
+ fw_cache.state = FW_LOADER_NO_CACHE;
+ mutex_unlock(&fw_lock);
+
+ device_uncache_fw_images_delay(10 * MSEC_PER_SEC);
+ break;
+ }
+
+ return 0;
+}
+
+/* stop caching firmware once syscore_suspend is reached */
+static int fw_suspend(void)
+{
+ fw_cache.state = FW_LOADER_NO_CACHE;
+ return 0;
+}
+
+static struct syscore_ops fw_syscore_ops = {
+ .suspend = fw_suspend,
+};
+#else
+static int fw_cache_piggyback_on_request(const char *name)
+{
+ return 0;
+}
+#endif
+
+static void __init fw_cache_init(void)
+{
+ spin_lock_init(&fw_cache.lock);
+ INIT_LIST_HEAD(&fw_cache.head);
+ fw_cache.state = FW_LOADER_NO_CACHE;
+
+#ifdef CONFIG_PM_SLEEP
+ spin_lock_init(&fw_cache.name_lock);
+ INIT_LIST_HEAD(&fw_cache.fw_names);
+ fw_cache.cnt = 0;
+
+ init_waitqueue_head(&fw_cache.wait_queue);
+ INIT_DELAYED_WORK(&fw_cache.work,
+ device_uncache_fw_images_work);
+
+ fw_cache.pm_notify.notifier_call = fw_pm_notify;
+ register_pm_notifier(&fw_cache.pm_notify);
+
+ register_syscore_ops(&fw_syscore_ops);
+#endif
+}
+
static int __init firmware_class_init(void)
{
+ fw_cache_init();
return class_register(&firmware_class);
}
static void __exit firmware_class_exit(void)
{
+#ifdef CONFIG_PM_SLEEP
+ unregister_syscore_ops(&fw_syscore_ops);
+ unregister_pm_notifier(&fw_cache.pm_notify);
+#endif
class_unregister(&firmware_class);
}
@@ -726,3 +1354,5 @@ module_exit(firmware_class_exit);
EXPORT_SYMBOL(release_firmware);
EXPORT_SYMBOL(request_firmware);
EXPORT_SYMBOL(request_firmware_nowait);
+EXPORT_SYMBOL_GPL(cache_firmware);
+EXPORT_SYMBOL_GPL(uncache_firmware);
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index a1a72250258..ddeca142293 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -20,9 +20,13 @@
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/pm_runtime.h>
+#include <linux/idr.h>
#include "base.h"
+/* For automatically allocated device IDs */
+static DEFINE_IDA(platform_devid_ida);
+
#define to_platform_driver(drv) (container_of((drv), struct platform_driver, \
driver))
@@ -99,6 +103,9 @@ struct resource *platform_get_resource_byname(struct platform_device *dev,
for (i = 0; i < dev->num_resources; i++) {
struct resource *r = &dev->resource[i];
+ if (unlikely(!r->name))
+ continue;
+
if (type == resource_type(r) && !strcmp(r->name, name))
return r;
}
@@ -263,7 +270,7 @@ EXPORT_SYMBOL_GPL(platform_device_add_data);
*/
int platform_device_add(struct platform_device *pdev)
{
- int i, ret = 0;
+ int i, ret;
if (!pdev)
return -EINVAL;
@@ -273,10 +280,27 @@ int platform_device_add(struct platform_device *pdev)
pdev->dev.bus = &platform_bus_type;
- if (pdev->id != -1)
+ switch (pdev->id) {
+ default:
dev_set_name(&pdev->dev, "%s.%d", pdev->name, pdev->id);
- else
+ break;
+ case PLATFORM_DEVID_NONE:
dev_set_name(&pdev->dev, "%s", pdev->name);
+ break;
+ case PLATFORM_DEVID_AUTO:
+ /*
+ * Automatically allocated device ID. We mark it as such so
+ * that we remember it must be freed, and we append a suffix
+ * to avoid namespace collision with explicit IDs.
+ */
+ ret = ida_simple_get(&platform_devid_ida, 0, 0, GFP_KERNEL);
+ if (ret < 0)
+ goto err_out;
+ pdev->id = ret;
+ pdev->id_auto = true;
+ dev_set_name(&pdev->dev, "%s.%d.auto", pdev->name, pdev->id);
+ break;
+ }
for (i = 0; i < pdev->num_resources; i++) {
struct resource *p, *r = &pdev->resource[i];
@@ -309,6 +333,11 @@ int platform_device_add(struct platform_device *pdev)
return ret;
failed:
+ if (pdev->id_auto) {
+ ida_simple_remove(&platform_devid_ida, pdev->id);
+ pdev->id = PLATFORM_DEVID_AUTO;
+ }
+
while (--i >= 0) {
struct resource *r = &pdev->resource[i];
unsigned long type = resource_type(r);
@@ -317,6 +346,7 @@ int platform_device_add(struct platform_device *pdev)
release_resource(r);
}
+ err_out:
return ret;
}
EXPORT_SYMBOL_GPL(platform_device_add);
@@ -336,6 +366,11 @@ void platform_device_del(struct platform_device *pdev)
if (pdev) {
device_del(&pdev->dev);
+ if (pdev->id_auto) {
+ ida_simple_remove(&platform_devid_ida, pdev->id);
+ pdev->id = PLATFORM_DEVID_AUTO;
+ }
+
for (i = 0; i < pdev->num_resources; i++) {
struct resource *r = &pdev->resource[i];
unsigned long type = resource_type(r);
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index 0113adc310d..b0b072a88f5 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -1324,3 +1324,25 @@ int device_pm_wait_for_dev(struct device *subordinate, struct device *dev)
return async_error;
}
EXPORT_SYMBOL_GPL(device_pm_wait_for_dev);
+
+/**
+ * dpm_for_each_dev - device iterator.
+ * @data: data for the callback.
+ * @fn: function to be called for each device.
+ *
+ * Iterate over devices in dpm_list, and call @fn for each device,
+ * passing it @data.
+ */
+void dpm_for_each_dev(void *data, void (*fn)(struct device *, void *))
+{
+ struct device *dev;
+
+ if (!fn)
+ return;
+
+ device_pm_lock();
+ list_for_each_entry(dev, &dpm_list, power.entry)
+ fn(dev, data);
+ device_pm_unlock();
+}
+EXPORT_SYMBOL_GPL(dpm_for_each_dev);
diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c
index a89734621e5..5b6b1d8e6cc 100644
--- a/drivers/base/regmap/regmap-irq.c
+++ b/drivers/base/regmap/regmap-irq.c
@@ -16,12 +16,14 @@
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/irqdomain.h>
+#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include "internal.h"
struct regmap_irq_chip_data {
struct mutex lock;
+ struct irq_chip irq_chip;
struct regmap *map;
const struct regmap_irq_chip *chip;
@@ -59,6 +61,14 @@ static void regmap_irq_sync_unlock(struct irq_data *data)
struct regmap_irq_chip_data *d = irq_data_get_irq_chip_data(data);
struct regmap *map = d->map;
int i, ret;
+ u32 reg;
+
+ if (d->chip->runtime_pm) {
+ ret = pm_runtime_get_sync(map->dev);
+ if (ret < 0)
+ dev_err(map->dev, "IRQ sync failed to resume: %d\n",
+ ret);
+ }
/*
* If there's been a change in the mask write it back to the
@@ -66,15 +76,22 @@ static void regmap_irq_sync_unlock(struct irq_data *data)
* suppress pointless writes.
*/
for (i = 0; i < d->chip->num_regs; i++) {
- ret = regmap_update_bits(d->map, d->chip->mask_base +
- (i * map->reg_stride *
- d->irq_reg_stride),
+ reg = d->chip->mask_base +
+ (i * map->reg_stride * d->irq_reg_stride);
+ if (d->chip->mask_invert)
+ ret = regmap_update_bits(d->map, reg,
+ d->mask_buf_def[i], ~d->mask_buf[i]);
+ else
+ ret = regmap_update_bits(d->map, reg,
d->mask_buf_def[i], d->mask_buf[i]);
if (ret != 0)
dev_err(d->map->dev, "Failed to sync masks in %x\n",
- d->chip->mask_base + (i * map->reg_stride));
+ reg);
}
+ if (d->chip->runtime_pm)
+ pm_runtime_put(map->dev);
+
/* If we've changed our wakeup count propagate it to the parent */
if (d->wake_count < 0)
for (i = d->wake_count; i < 0; i++)
@@ -128,8 +145,7 @@ static int regmap_irq_set_wake(struct irq_data *data, unsigned int on)
return 0;
}
-static struct irq_chip regmap_irq_chip = {
- .name = "regmap",
+static const struct irq_chip regmap_irq_chip = {
.irq_bus_lock = regmap_irq_lock,
.irq_bus_sync_unlock = regmap_irq_sync_unlock,
.irq_disable = regmap_irq_disable,
@@ -144,6 +160,16 @@ static irqreturn_t regmap_irq_thread(int irq, void *d)
struct regmap *map = data->map;
int ret, i;
bool handled = false;
+ u32 reg;
+
+ if (chip->runtime_pm) {
+ ret = pm_runtime_get_sync(map->dev);
+ if (ret < 0) {
+ dev_err(map->dev, "IRQ thread failed to resume: %d\n",
+ ret);
+ return IRQ_NONE;
+ }
+ }
/*
* Ignore masked IRQs and ack if we need to; we ack early so
@@ -160,20 +186,20 @@ static irqreturn_t regmap_irq_thread(int irq, void *d)
if (ret != 0) {
dev_err(map->dev, "Failed to read IRQ status: %d\n",
ret);
+ if (chip->runtime_pm)
+ pm_runtime_put(map->dev);
return IRQ_NONE;
}
data->status_buf[i] &= ~data->mask_buf[i];
if (data->status_buf[i] && chip->ack_base) {
- ret = regmap_write(map, chip->ack_base +
- (i * map->reg_stride *
- data->irq_reg_stride),
- data->status_buf[i]);
+ reg = chip->ack_base +
+ (i * map->reg_stride * data->irq_reg_stride);
+ ret = regmap_write(map, reg, data->status_buf[i]);
if (ret != 0)
dev_err(map->dev, "Failed to ack 0x%x: %d\n",
- chip->ack_base + (i * map->reg_stride),
- ret);
+ reg, ret);
}
}
@@ -185,6 +211,9 @@ static irqreturn_t regmap_irq_thread(int irq, void *d)
}
}
+ if (chip->runtime_pm)
+ pm_runtime_put(map->dev);
+
if (handled)
return IRQ_HANDLED;
else
@@ -197,7 +226,7 @@ static int regmap_irq_map(struct irq_domain *h, unsigned int virq,
struct regmap_irq_chip_data *data = h->host_data;
irq_set_chip_data(virq, data);
- irq_set_chip_and_handler(virq, &regmap_irq_chip, handle_edge_irq);
+ irq_set_chip(virq, &data->irq_chip);
irq_set_nested_thread(virq, 1);
/* ARM needs us to explicitly flag the IRQ as valid
@@ -238,6 +267,7 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
struct regmap_irq_chip_data *d;
int i;
int ret = -ENOMEM;
+ u32 reg;
for (i = 0; i < chip->num_irqs; i++) {
if (chip->irqs[i].reg_offset % map->reg_stride)
@@ -284,6 +314,13 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
goto err_alloc;
}
+ d->irq_chip = regmap_irq_chip;
+ d->irq_chip.name = chip->name;
+ if (!chip->wake_base) {
+ d->irq_chip.irq_set_wake = NULL;
+ d->irq_chip.flags |= IRQCHIP_MASK_ON_SUSPEND |
+ IRQCHIP_SKIP_SET_WAKE;
+ }
d->irq = irq;
d->map = map;
d->chip = chip;
@@ -303,16 +340,37 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
/* Mask all the interrupts by default */
for (i = 0; i < chip->num_regs; i++) {
d->mask_buf[i] = d->mask_buf_def[i];
- ret = regmap_write(map, chip->mask_base + (i * map->reg_stride
- * d->irq_reg_stride),
- d->mask_buf[i]);
+ reg = chip->mask_base +
+ (i * map->reg_stride * d->irq_reg_stride);
+ if (chip->mask_invert)
+ ret = regmap_update_bits(map, reg,
+ d->mask_buf[i], ~d->mask_buf[i]);
+ else
+ ret = regmap_update_bits(map, reg,
+ d->mask_buf[i], d->mask_buf[i]);
if (ret != 0) {
dev_err(map->dev, "Failed to set masks in 0x%x: %d\n",
- chip->mask_base + (i * map->reg_stride), ret);
+ reg, ret);
goto err_alloc;
}
}
+ /* Wake is disabled by default */
+ if (d->wake_buf) {
+ for (i = 0; i < chip->num_regs; i++) {
+ d->wake_buf[i] = d->mask_buf_def[i];
+ reg = chip->wake_base +
+ (i * map->reg_stride * d->irq_reg_stride);
+ ret = regmap_update_bits(map, reg, d->wake_buf[i],
+ d->wake_buf[i]);
+ if (ret != 0) {
+ dev_err(map->dev, "Failed to set masks in 0x%x: %d\n",
+ reg, ret);
+ goto err_alloc;
+ }
+ }
+ }
+
if (irq_base)
d->domain = irq_domain_add_legacy(map->dev->of_node,
chip->num_irqs, irq_base, 0,
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index c241ae2f2f1..52069d29ff1 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -659,13 +659,12 @@ EXPORT_SYMBOL_GPL(devm_regmap_init);
* new cache. This can be used to restore the cache to defaults or to
* update the cache configuration to reflect runtime discovery of the
* hardware.
+ *
+ * No explicit locking is done here, the user needs to ensure that
+ * this function will not race with other calls to regmap.
*/
int regmap_reinit_cache(struct regmap *map, const struct regmap_config *config)
{
- int ret;
-
- map->lock(map);
-
regcache_exit(map);
regmap_debugfs_exit(map);
@@ -681,11 +680,7 @@ int regmap_reinit_cache(struct regmap *map, const struct regmap_config *config)
map->cache_bypass = false;
map->cache_only = false;
- ret = regcache_init(map, config);
-
- map->unlock(map);
-
- return ret;
+ return regcache_init(map, config);
}
EXPORT_SYMBOL_GPL(regmap_reinit_cache);
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index a796407123c..f529407db93 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -353,18 +353,6 @@ config BLK_DEV_SX8
Use devices /dev/sx8/$N and /dev/sx8/$Np$M.
-config BLK_DEV_UB
- tristate "Low Performance USB Block driver (deprecated)"
- depends on USB
- help
- This driver supports certain USB attached storage devices
- such as flash keys.
-
- If you enable this driver, it is recommended to avoid conflicts
- with usb-storage by enabling USB_LIBUSUAL.
-
- If unsure, say N.
-
config BLK_DEV_RAM
tristate "RAM block device support"
---help---
diff --git a/drivers/block/Makefile b/drivers/block/Makefile
index 5b795059f8f..17e82df3df7 100644
--- a/drivers/block/Makefile
+++ b/drivers/block/Makefile
@@ -33,7 +33,6 @@ obj-$(CONFIG_VIRTIO_BLK) += virtio_blk.o
obj-$(CONFIG_VIODASD) += viodasd.o
obj-$(CONFIG_BLK_DEV_SX8) += sx8.o
-obj-$(CONFIG_BLK_DEV_UB) += ub.o
obj-$(CONFIG_BLK_DEV_HD) += hd.o
obj-$(CONFIG_XEN_BLKDEV_FRONTEND) += xen-blkfront.o
diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c
index de0435e63b0..887f68f6d79 100644
--- a/drivers/block/aoe/aoecmd.c
+++ b/drivers/block/aoe/aoecmd.c
@@ -35,6 +35,7 @@ new_skb(ulong len)
skb_reset_mac_header(skb);
skb_reset_network_header(skb);
skb->protocol = __constant_htons(ETH_P_AOE);
+ skb_checksum_none_assert(skb);
}
return skb;
}
diff --git a/drivers/block/cciss_scsi.c b/drivers/block/cciss_scsi.c
index 38aa6dda6b8..da3311129a0 100644
--- a/drivers/block/cciss_scsi.c
+++ b/drivers/block/cciss_scsi.c
@@ -795,6 +795,7 @@ static void complete_scsi_command(CommandList_struct *c, int timeout,
}
break;
case CMD_PROTOCOL_ERR:
+ cmd->result = DID_ERROR << 16;
dev_warn(&h->pdev->dev,
"%p has protocol error\n", c);
break;
diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index a8fddeb3d63..f946d31d691 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -1148,11 +1148,15 @@ static bool mtip_pause_ncq(struct mtip_port *port,
reply = port->rxfis + RX_FIS_D2H_REG;
task_file_data = readl(port->mmio+PORT_TFDATA);
- if ((task_file_data & 1) || (fis->command == ATA_CMD_SEC_ERASE_UNIT))
+ if (fis->command == ATA_CMD_SEC_ERASE_UNIT)
+ clear_bit(MTIP_DDF_SEC_LOCK_BIT, &port->dd->dd_flag);
+
+ if ((task_file_data & 1))
return false;
if (fis->command == ATA_CMD_SEC_ERASE_PREP) {
set_bit(MTIP_PF_SE_ACTIVE_BIT, &port->flags);
+ set_bit(MTIP_DDF_SEC_LOCK_BIT, &port->dd->dd_flag);
port->ic_pause_timer = jiffies;
return true;
} else if ((fis->command == ATA_CMD_DOWNLOAD_MICRO) &&
@@ -1900,7 +1904,7 @@ static int exec_drive_command(struct mtip_port *port, u8 *command,
int rv = 0, xfer_sz = command[3];
if (xfer_sz) {
- if (user_buffer)
+ if (!user_buffer)
return -EFAULT;
buf = dmam_alloc_coherent(&port->dd->pdev->dev,
@@ -2043,7 +2047,7 @@ static void mtip_set_timeout(struct host_to_dev_fis *fis, unsigned int *timeout)
*timeout = 240000; /* 4 minutes */
break;
case ATA_CMD_STANDBYNOW1:
- *timeout = 10000; /* 10 seconds */
+ *timeout = 120000; /* 2 minutes */
break;
case 0xF7:
case 0xFA:
@@ -2588,9 +2592,6 @@ static ssize_t mtip_hw_read_registers(struct file *f, char __user *ubuf,
if (!len || size)
return 0;
- if (size < 0)
- return -EINVAL;
-
size += sprintf(&buf[size], "H/ S ACTive : [ 0x");
for (n = dd->slot_groups-1; n >= 0; n--)
@@ -2660,9 +2661,6 @@ static ssize_t mtip_hw_read_flags(struct file *f, char __user *ubuf,
if (!len || size)
return 0;
- if (size < 0)
- return -EINVAL;
-
size += sprintf(&buf[size], "Flag-port : [ %08lX ]\n",
dd->port->flags);
size += sprintf(&buf[size], "Flag-dd : [ %08lX ]\n",
@@ -3214,8 +3212,8 @@ static int mtip_hw_init(struct driver_data *dd)
"Unable to check write protect progress\n");
else
dev_info(&dd->pdev->dev,
- "Write protect progress: %d%% (%d blocks)\n",
- attr242.cur, attr242.data);
+ "Write protect progress: %u%% (%u blocks)\n",
+ attr242.cur, le32_to_cpu(attr242.data));
return rv;
out3:
@@ -3619,6 +3617,10 @@ static void mtip_make_request(struct request_queue *queue, struct bio *bio)
bio_endio(bio, -ENODATA);
return;
}
+ if (unlikely(test_bit(MTIP_DDF_SEC_LOCK_BIT, &dd->dd_flag))) {
+ bio_endio(bio, -ENODATA);
+ return;
+ }
}
if (unlikely(!bio_has_data(bio))) {
@@ -4168,7 +4170,13 @@ static void mtip_pci_shutdown(struct pci_dev *pdev)
/* Table of device ids supported by this driver. */
static DEFINE_PCI_DEVICE_TABLE(mtip_pci_tbl) = {
- { PCI_DEVICE(PCI_VENDOR_ID_MICRON, P320_DEVICE_ID) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MICRON, P320H_DEVICE_ID) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MICRON, P320M_DEVICE_ID) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MICRON, P320S_DEVICE_ID) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MICRON, P325M_DEVICE_ID) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MICRON, P420H_DEVICE_ID) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MICRON, P420M_DEVICE_ID) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MICRON, P425M_DEVICE_ID) },
{ 0 }
};
@@ -4199,12 +4207,12 @@ static int __init mtip_init(void)
{
int error;
- printk(KERN_INFO MTIP_DRV_NAME " Version " MTIP_DRV_VERSION "\n");
+ pr_info(MTIP_DRV_NAME " Version " MTIP_DRV_VERSION "\n");
/* Allocate a major block device number to use with this driver. */
error = register_blkdev(0, MTIP_DRV_NAME);
if (error <= 0) {
- printk(KERN_ERR "Unable to register block device (%d)\n",
+ pr_err("Unable to register block device (%d)\n",
error);
return -EBUSY;
}
@@ -4213,7 +4221,7 @@ static int __init mtip_init(void)
if (!dfs_parent) {
dfs_parent = debugfs_create_dir("rssd", NULL);
if (IS_ERR_OR_NULL(dfs_parent)) {
- printk(KERN_WARNING "Error creating debugfs parent\n");
+ pr_warn("Error creating debugfs parent\n");
dfs_parent = NULL;
}
}
diff --git a/drivers/block/mtip32xx/mtip32xx.h b/drivers/block/mtip32xx/mtip32xx.h
index f51fc23d17b..18627a1d04c 100644
--- a/drivers/block/mtip32xx/mtip32xx.h
+++ b/drivers/block/mtip32xx/mtip32xx.h
@@ -76,7 +76,13 @@
/* Micron Vendor ID & P320x SSD Device ID */
#define PCI_VENDOR_ID_MICRON 0x1344
-#define P320_DEVICE_ID 0x5150
+#define P320H_DEVICE_ID 0x5150
+#define P320M_DEVICE_ID 0x5151
+#define P320S_DEVICE_ID 0x5152
+#define P325M_DEVICE_ID 0x5153
+#define P420H_DEVICE_ID 0x5160
+#define P420M_DEVICE_ID 0x5161
+#define P425M_DEVICE_ID 0x5163
/* Driver name and version strings */
#define MTIP_DRV_NAME "mtip32xx"
@@ -131,10 +137,12 @@ enum {
MTIP_PF_SVC_THD_STOP_BIT = 8,
/* below are bit numbers in 'dd_flag' defined in driver_data */
+ MTIP_DDF_SEC_LOCK_BIT = 0,
MTIP_DDF_REMOVE_PENDING_BIT = 1,
MTIP_DDF_OVER_TEMP_BIT = 2,
MTIP_DDF_WRITE_PROTECT_BIT = 3,
MTIP_DDF_STOP_IO = ((1 << MTIP_DDF_REMOVE_PENDING_BIT) | \
+ (1 << MTIP_DDF_SEC_LOCK_BIT) | \
(1 << MTIP_DDF_OVER_TEMP_BIT) | \
(1 << MTIP_DDF_WRITE_PROTECT_BIT)),
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index d07c9f7fded..0c03411c59e 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -449,6 +449,14 @@ static void nbd_clear_que(struct nbd_device *nbd)
req->errors++;
nbd_end_request(req);
}
+
+ while (!list_empty(&nbd->waiting_queue)) {
+ req = list_entry(nbd->waiting_queue.next, struct request,
+ queuelist);
+ list_del_init(&req->queuelist);
+ req->errors++;
+ nbd_end_request(req);
+ }
}
@@ -598,6 +606,7 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
nbd->file = NULL;
nbd_clear_que(nbd);
BUG_ON(!list_empty(&nbd->queue_head));
+ BUG_ON(!list_empty(&nbd->waiting_queue));
if (file)
fput(file);
return 0;
diff --git a/drivers/block/nvme.c b/drivers/block/nvme.c
index 38a2d063188..931769e133e 100644
--- a/drivers/block/nvme.c
+++ b/drivers/block/nvme.c
@@ -79,6 +79,7 @@ struct nvme_dev {
char serial[20];
char model[40];
char firmware_rev[8];
+ u32 max_hw_sectors;
};
/*
@@ -835,15 +836,15 @@ static int nvme_identify(struct nvme_dev *dev, unsigned nsid, unsigned cns,
}
static int nvme_get_features(struct nvme_dev *dev, unsigned fid,
- unsigned dword11, dma_addr_t dma_addr)
+ unsigned nsid, dma_addr_t dma_addr)
{
struct nvme_command c;
memset(&c, 0, sizeof(c));
c.features.opcode = nvme_admin_get_features;
+ c.features.nsid = cpu_to_le32(nsid);
c.features.prp1 = cpu_to_le64(dma_addr);
c.features.fid = cpu_to_le32(fid);
- c.features.dword11 = cpu_to_le32(dword11);
return nvme_submit_admin_cmd(dev, &c, NULL);
}
@@ -862,11 +863,51 @@ static int nvme_set_features(struct nvme_dev *dev, unsigned fid,
return nvme_submit_admin_cmd(dev, &c, result);
}
+/**
+ * nvme_cancel_ios - Cancel outstanding I/Os
+ * @queue: The queue to cancel I/Os on
+ * @timeout: True to only cancel I/Os which have timed out
+ */
+static void nvme_cancel_ios(struct nvme_queue *nvmeq, bool timeout)
+{
+ int depth = nvmeq->q_depth - 1;
+ struct nvme_cmd_info *info = nvme_cmd_info(nvmeq);
+ unsigned long now = jiffies;
+ int cmdid;
+
+ for_each_set_bit(cmdid, nvmeq->cmdid_data, depth) {
+ void *ctx;
+ nvme_completion_fn fn;
+ static struct nvme_completion cqe = {
+ .status = cpu_to_le16(NVME_SC_ABORT_REQ) << 1,
+ };
+
+ if (timeout && !time_after(now, info[cmdid].timeout))
+ continue;
+ dev_warn(nvmeq->q_dmadev, "Cancelling I/O %d\n", cmdid);
+ ctx = cancel_cmdid(nvmeq, cmdid, &fn);
+ fn(nvmeq->dev, ctx, &cqe);
+ }
+}
+
+static void nvme_free_queue_mem(struct nvme_queue *nvmeq)
+{
+ dma_free_coherent(nvmeq->q_dmadev, CQ_SIZE(nvmeq->q_depth),
+ (void *)nvmeq->cqes, nvmeq->cq_dma_addr);
+ dma_free_coherent(nvmeq->q_dmadev, SQ_SIZE(nvmeq->q_depth),
+ nvmeq->sq_cmds, nvmeq->sq_dma_addr);
+ kfree(nvmeq);
+}
+
static void nvme_free_queue(struct nvme_dev *dev, int qid)
{
struct nvme_queue *nvmeq = dev->queues[qid];
int vector = dev->entry[nvmeq->cq_vector].vector;
+ spin_lock_irq(&nvmeq->q_lock);
+ nvme_cancel_ios(nvmeq, false);
+ spin_unlock_irq(&nvmeq->q_lock);
+
irq_set_affinity_hint(vector, NULL);
free_irq(vector, nvmeq);
@@ -876,18 +917,15 @@ static void nvme_free_queue(struct nvme_dev *dev, int qid)
adapter_delete_cq(dev, qid);
}
- dma_free_coherent(nvmeq->q_dmadev, CQ_SIZE(nvmeq->q_depth),
- (void *)nvmeq->cqes, nvmeq->cq_dma_addr);
- dma_free_coherent(nvmeq->q_dmadev, SQ_SIZE(nvmeq->q_depth),
- nvmeq->sq_cmds, nvmeq->sq_dma_addr);
- kfree(nvmeq);
+ nvme_free_queue_mem(nvmeq);
}
static struct nvme_queue *nvme_alloc_queue(struct nvme_dev *dev, int qid,
int depth, int vector)
{
struct device *dmadev = &dev->pci_dev->dev;
- unsigned extra = (depth / 8) + (depth * sizeof(struct nvme_cmd_info));
+ unsigned extra = DIV_ROUND_UP(depth, 8) + (depth *
+ sizeof(struct nvme_cmd_info));
struct nvme_queue *nvmeq = kzalloc(sizeof(*nvmeq) + extra, GFP_KERNEL);
if (!nvmeq)
return NULL;
@@ -975,7 +1013,7 @@ static __devinit struct nvme_queue *nvme_create_queue(struct nvme_dev *dev,
static int __devinit nvme_configure_admin_queue(struct nvme_dev *dev)
{
- int result;
+ int result = 0;
u32 aqa;
u64 cap;
unsigned long timeout;
@@ -1005,17 +1043,22 @@ static int __devinit nvme_configure_admin_queue(struct nvme_dev *dev)
timeout = ((NVME_CAP_TIMEOUT(cap) + 1) * HZ / 2) + jiffies;
dev->db_stride = NVME_CAP_STRIDE(cap);
- while (!(readl(&dev->bar->csts) & NVME_CSTS_RDY)) {
+ while (!result && !(readl(&dev->bar->csts) & NVME_CSTS_RDY)) {
msleep(100);
if (fatal_signal_pending(current))
- return -EINTR;
+ result = -EINTR;
if (time_after(jiffies, timeout)) {
dev_err(&dev->pci_dev->dev,
"Device not ready; aborting initialisation\n");
- return -ENODEV;
+ result = -ENODEV;
}
}
+ if (result) {
+ nvme_free_queue_mem(nvmeq);
+ return result;
+ }
+
result = queue_request_irq(dev, nvmeq, "nvme admin");
dev->queues[0] = nvmeq;
return result;
@@ -1037,6 +1080,8 @@ static struct nvme_iod *nvme_map_user_pages(struct nvme_dev *dev, int write,
offset = offset_in_page(addr);
count = DIV_ROUND_UP(offset + length, PAGE_SIZE);
pages = kcalloc(count, sizeof(*pages), GFP_KERNEL);
+ if (!pages)
+ return ERR_PTR(-ENOMEM);
err = get_user_pages_fast(addr, count, 1, pages);
if (err < count) {
@@ -1146,14 +1191,13 @@ static int nvme_submit_io(struct nvme_ns *ns, struct nvme_user_io __user *uio)
return status;
}
-static int nvme_user_admin_cmd(struct nvme_ns *ns,
+static int nvme_user_admin_cmd(struct nvme_dev *dev,
struct nvme_admin_cmd __user *ucmd)
{
- struct nvme_dev *dev = ns->dev;
struct nvme_admin_cmd cmd;
struct nvme_command c;
int status, length;
- struct nvme_iod *iod;
+ struct nvme_iod *uninitialized_var(iod);
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
@@ -1204,7 +1248,7 @@ static int nvme_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd,
case NVME_IOCTL_ID:
return ns->ns_id;
case NVME_IOCTL_ADMIN_CMD:
- return nvme_user_admin_cmd(ns, (void __user *)arg);
+ return nvme_user_admin_cmd(ns->dev, (void __user *)arg);
case NVME_IOCTL_SUBMIT_IO:
return nvme_submit_io(ns, (void __user *)arg);
default:
@@ -1218,26 +1262,6 @@ static const struct block_device_operations nvme_fops = {
.compat_ioctl = nvme_ioctl,
};
-static void nvme_timeout_ios(struct nvme_queue *nvmeq)
-{
- int depth = nvmeq->q_depth - 1;
- struct nvme_cmd_info *info = nvme_cmd_info(nvmeq);
- unsigned long now = jiffies;
- int cmdid;
-
- for_each_set_bit(cmdid, nvmeq->cmdid_data, depth) {
- void *ctx;
- nvme_completion_fn fn;
- static struct nvme_completion cqe = { .status = cpu_to_le16(NVME_SC_ABORT_REQ) << 1, };
-
- if (!time_after(now, info[cmdid].timeout))
- continue;
- dev_warn(nvmeq->q_dmadev, "Timing out I/O %d\n", cmdid);
- ctx = cancel_cmdid(nvmeq, cmdid, &fn);
- fn(nvmeq->dev, ctx, &cqe);
- }
-}
-
static void nvme_resubmit_bios(struct nvme_queue *nvmeq)
{
while (bio_list_peek(&nvmeq->sq_cong)) {
@@ -1269,7 +1293,7 @@ static int nvme_kthread(void *data)
spin_lock_irq(&nvmeq->q_lock);
if (nvme_process_cq(nvmeq))
printk("process_cq did something\n");
- nvme_timeout_ios(nvmeq);
+ nvme_cancel_ios(nvmeq, true);
nvme_resubmit_bios(nvmeq);
spin_unlock_irq(&nvmeq->q_lock);
}
@@ -1339,6 +1363,9 @@ static struct nvme_ns *nvme_alloc_ns(struct nvme_dev *dev, int nsid,
ns->disk = disk;
lbaf = id->flbas & 0xf;
ns->lba_shift = id->lbaf[lbaf].ds;
+ blk_queue_logical_block_size(ns->queue, 1 << ns->lba_shift);
+ if (dev->max_hw_sectors)
+ blk_queue_max_hw_sectors(ns->queue, dev->max_hw_sectors);
disk->major = nvme_major;
disk->minors = NVME_MINORS;
@@ -1383,7 +1410,7 @@ static int set_queue_count(struct nvme_dev *dev, int count)
static int __devinit nvme_setup_io_queues(struct nvme_dev *dev)
{
- int result, cpu, i, nr_io_queues, db_bar_size;
+ int result, cpu, i, nr_io_queues, db_bar_size, q_depth;
nr_io_queues = num_online_cpus();
result = set_queue_count(dev, nr_io_queues);
@@ -1429,9 +1456,10 @@ static int __devinit nvme_setup_io_queues(struct nvme_dev *dev)
cpu = cpumask_next(cpu, cpu_online_mask);
}
+ q_depth = min_t(int, NVME_CAP_MQES(readq(&dev->bar->cap)) + 1,
+ NVME_Q_DEPTH);
for (i = 0; i < nr_io_queues; i++) {
- dev->queues[i + 1] = nvme_create_queue(dev, i + 1,
- NVME_Q_DEPTH, i);
+ dev->queues[i + 1] = nvme_create_queue(dev, i + 1, q_depth, i);
if (IS_ERR(dev->queues[i + 1]))
return PTR_ERR(dev->queues[i + 1]);
dev->queue_count++;
@@ -1480,6 +1508,10 @@ static int __devinit nvme_dev_add(struct nvme_dev *dev)
memcpy(dev->serial, ctrl->sn, sizeof(ctrl->sn));
memcpy(dev->model, ctrl->mn, sizeof(ctrl->mn));
memcpy(dev->firmware_rev, ctrl->fr, sizeof(ctrl->fr));
+ if (ctrl->mdts) {
+ int shift = NVME_CAP_MPSMIN(readq(&dev->bar->cap)) + 12;
+ dev->max_hw_sectors = 1 << (ctrl->mdts + shift - 9);
+ }
id_ns = mem;
for (i = 1; i <= nn; i++) {
@@ -1523,8 +1555,6 @@ static int nvme_dev_remove(struct nvme_dev *dev)
list_del(&dev->node);
spin_unlock(&dev_list_lock);
- /* TODO: wait all I/O finished or cancel them */
-
list_for_each_entry_safe(ns, next, &dev->namespaces, list) {
list_del(&ns->list);
del_gendisk(ns->disk);
@@ -1560,15 +1590,33 @@ static void nvme_release_prp_pools(struct nvme_dev *dev)
dma_pool_destroy(dev->prp_small_pool);
}
-/* XXX: Use an ida or something to let remove / add work correctly */
-static void nvme_set_instance(struct nvme_dev *dev)
+static DEFINE_IDA(nvme_instance_ida);
+
+static int nvme_set_instance(struct nvme_dev *dev)
{
- static int instance;
- dev->instance = instance++;
+ int instance, error;
+
+ do {
+ if (!ida_pre_get(&nvme_instance_ida, GFP_KERNEL))
+ return -ENODEV;
+
+ spin_lock(&dev_list_lock);
+ error = ida_get_new(&nvme_instance_ida, &instance);
+ spin_unlock(&dev_list_lock);
+ } while (error == -EAGAIN);
+
+ if (error)
+ return -ENODEV;
+
+ dev->instance = instance;
+ return 0;
}
static void nvme_release_instance(struct nvme_dev *dev)
{
+ spin_lock(&dev_list_lock);
+ ida_remove(&nvme_instance_ida, dev->instance);
+ spin_unlock(&dev_list_lock);
}
static int __devinit nvme_probe(struct pci_dev *pdev,
@@ -1601,7 +1649,10 @@ static int __devinit nvme_probe(struct pci_dev *pdev,
pci_set_drvdata(pdev, dev);
dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
- nvme_set_instance(dev);
+ result = nvme_set_instance(dev);
+ if (result)
+ goto disable;
+
dev->entry[0].vector = pdev->irq;
result = nvme_setup_prp_pools(dev);
@@ -1675,7 +1726,7 @@ static void __devexit nvme_remove(struct pci_dev *pdev)
#define nvme_suspend NULL
#define nvme_resume NULL
-static struct pci_error_handlers nvme_err_handler = {
+static const struct pci_error_handlers nvme_err_handler = {
.error_detected = nvme_error_detected,
.mmio_enabled = nvme_dump_registers,
.link_reset = nvme_link_reset,
@@ -1704,15 +1755,17 @@ static struct pci_driver nvme_driver = {
static int __init nvme_init(void)
{
- int result = -EBUSY;
+ int result;
nvme_thread = kthread_run(nvme_kthread, NULL, "nvme");
if (IS_ERR(nvme_thread))
return PTR_ERR(nvme_thread);
- nvme_major = register_blkdev(nvme_major, "nvme");
- if (nvme_major <= 0)
+ result = register_blkdev(nvme_major, "nvme");
+ if (result < 0)
goto kill_kthread;
+ else if (result > 0)
+ nvme_major = result;
result = pci_register_driver(&nvme_driver);
if (result)
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 9917943a357..54a55f03115 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -246,13 +246,12 @@ static int rbd_open(struct block_device *bdev, fmode_t mode)
{
struct rbd_device *rbd_dev = bdev->bd_disk->private_data;
- rbd_get_dev(rbd_dev);
-
- set_device_ro(bdev, rbd_dev->read_only);
-
if ((mode & FMODE_WRITE) && rbd_dev->read_only)
return -EROFS;
+ rbd_get_dev(rbd_dev);
+ set_device_ro(bdev, rbd_dev->read_only);
+
return 0;
}
diff --git a/drivers/block/ub.c b/drivers/block/ub.c
deleted file mode 100644
index fcec0225ac7..00000000000
--- a/drivers/block/ub.c
+++ /dev/null
@@ -1,2474 +0,0 @@
-/*
- * The low performance USB storage driver (ub).
- *
- * Copyright (c) 1999, 2000 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
- * Copyright (C) 2004 Pete Zaitcev (zaitcev@yahoo.com)
- *
- * This work is a part of Linux kernel, is derived from it,
- * and is not licensed separately. See file COPYING for details.
- *
- * TODO (sorted by decreasing priority)
- * -- Return sense now that rq allows it (we always auto-sense anyway).
- * -- set readonly flag for CDs, set removable flag for CF readers
- * -- do inquiry and verify we got a disk and not a tape (for LUN mismatch)
- * -- verify the 13 conditions and do bulk resets
- * -- highmem
- * -- move top_sense and work_bcs into separate allocations (if they survive)
- * for cache purists and esoteric architectures.
- * -- Allocate structure for LUN 0 before the first ub_sync_tur, avoid NULL. ?
- * -- prune comments, they are too volumnous
- * -- Resove XXX's
- * -- CLEAR, CLR2STS, CLRRS seem to be ripe for refactoring.
- */
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/usb.h>
-#include <linux/usb_usual.h>
-#include <linux/blkdev.h>
-#include <linux/timer.h>
-#include <linux/scatterlist.h>
-#include <linux/slab.h>
-#include <linux/mutex.h>
-#include <scsi/scsi.h>
-
-#define DRV_NAME "ub"
-
-#define UB_MAJOR 180
-
-/*
- * The command state machine is the key model for understanding of this driver.
- *
- * The general rule is that all transitions are done towards the bottom
- * of the diagram, thus preventing any loops.
- *
- * An exception to that is how the STAT state is handled. A counter allows it
- * to be re-entered along the path marked with [C].
- *
- * +--------+
- * ! INIT !
- * +--------+
- * !
- * ub_scsi_cmd_start fails ->--------------------------------------\
- * ! !
- * V !
- * +--------+ !
- * ! CMD ! !
- * +--------+ !
- * ! +--------+ !
- * was -EPIPE -->-------------------------------->! CLEAR ! !
- * ! +--------+ !
- * ! ! !
- * was error -->------------------------------------- ! --------->\
- * ! ! !
- * /--<-- cmd->dir == NONE ? ! !
- * ! ! ! !
- * ! V ! !
- * ! +--------+ ! !
- * ! ! DATA ! ! !
- * ! +--------+ ! !
- * ! ! +---------+ ! !
- * ! was -EPIPE -->--------------->! CLR2STS ! ! !
- * ! ! +---------+ ! !
- * ! ! ! ! !
- * ! ! was error -->---- ! --------->\
- * ! was error -->--------------------- ! ------------- ! --------->\
- * ! ! ! ! !
- * ! V ! ! !
- * \--->+--------+ ! ! !
- * ! STAT !<--------------------------/ ! !
- * /--->+--------+ ! !
- * ! ! ! !
- * [C] was -EPIPE -->-----------\ ! !
- * ! ! ! ! !
- * +<---- len == 0 ! ! !
- * ! ! ! ! !
- * ! was error -->--------------------------------------!---------->\
- * ! ! ! ! !
- * +<---- bad CSW ! ! !
- * +<---- bad tag ! ! !
- * ! ! V ! !
- * ! ! +--------+ ! !
- * ! ! ! CLRRS ! ! !
- * ! ! +--------+ ! !
- * ! ! ! ! !
- * \------- ! --------------------[C]--------\ ! !
- * ! ! ! !
- * cmd->error---\ +--------+ ! !
- * ! +--------------->! SENSE !<----------/ !
- * STAT_FAIL----/ +--------+ !
- * ! ! V
- * ! V +--------+
- * \--------------------------------\--------------------->! DONE !
- * +--------+
- */
-
-/*
- * This many LUNs per USB device.
- * Every one of them takes a host, see UB_MAX_HOSTS.
- */
-#define UB_MAX_LUNS 9
-
-/*
- */
-
-#define UB_PARTS_PER_LUN 8
-
-#define UB_MAX_CDB_SIZE 16 /* Corresponds to Bulk */
-
-#define UB_SENSE_SIZE 18
-
-/*
- */
-struct ub_dev;
-
-#define UB_MAX_REQ_SG 9 /* cdrecord requires 32KB and maybe a header */
-#define UB_MAX_SECTORS 64
-
-/*
- * A second is more than enough for a 32K transfer (UB_MAX_SECTORS)
- * even if a webcam hogs the bus, but some devices need time to spin up.
- */
-#define UB_URB_TIMEOUT (HZ*2)
-#define UB_DATA_TIMEOUT (HZ*5) /* ZIP does spin-ups in the data phase */
-#define UB_STAT_TIMEOUT (HZ*5) /* Same spinups and eject for a dataless cmd. */
-#define UB_CTRL_TIMEOUT (HZ/2) /* 500ms ought to be enough to clear a stall */
-
-/*
- * An instance of a SCSI command in transit.
- */
-#define UB_DIR_NONE 0
-#define UB_DIR_READ 1
-#define UB_DIR_ILLEGAL2 2
-#define UB_DIR_WRITE 3
-
-#define UB_DIR_CHAR(c) (((c)==UB_DIR_WRITE)? 'w': \
- (((c)==UB_DIR_READ)? 'r': 'n'))
-
-enum ub_scsi_cmd_state {
- UB_CMDST_INIT, /* Initial state */
- UB_CMDST_CMD, /* Command submitted */
- UB_CMDST_DATA, /* Data phase */
- UB_CMDST_CLR2STS, /* Clearing before requesting status */
- UB_CMDST_STAT, /* Status phase */
- UB_CMDST_CLEAR, /* Clearing a stall (halt, actually) */
- UB_CMDST_CLRRS, /* Clearing before retrying status */
- UB_CMDST_SENSE, /* Sending Request Sense */
- UB_CMDST_DONE /* Final state */
-};
-
-struct ub_scsi_cmd {
- unsigned char cdb[UB_MAX_CDB_SIZE];
- unsigned char cdb_len;
-
- unsigned char dir; /* 0 - none, 1 - read, 3 - write. */
- enum ub_scsi_cmd_state state;
- unsigned int tag;
- struct ub_scsi_cmd *next;
-
- int error; /* Return code - valid upon done */
- unsigned int act_len; /* Return size */
- unsigned char key, asc, ascq; /* May be valid if error==-EIO */
-
- int stat_count; /* Retries getting status. */
- unsigned int timeo; /* jiffies until rq->timeout changes */
-
- unsigned int len; /* Requested length */
- unsigned int current_sg;
- unsigned int nsg; /* sgv[nsg] */
- struct scatterlist sgv[UB_MAX_REQ_SG];
-
- struct ub_lun *lun;
- void (*done)(struct ub_dev *, struct ub_scsi_cmd *);
- void *back;
-};
-
-struct ub_request {
- struct request *rq;
- unsigned int current_try;
- unsigned int nsg; /* sgv[nsg] */
- struct scatterlist sgv[UB_MAX_REQ_SG];
-};
-
-/*
- */
-struct ub_capacity {
- unsigned long nsec; /* Linux size - 512 byte sectors */
- unsigned int bsize; /* Linux hardsect_size */
- unsigned int bshift; /* Shift between 512 and hard sects */
-};
-
-/*
- * This is a direct take-off from linux/include/completion.h
- * The difference is that I do not wait on this thing, just poll.
- * When I want to wait (ub_probe), I just use the stock completion.
- *
- * Note that INIT_COMPLETION takes no lock. It is correct. But why
- * in the bloody hell that thing takes struct instead of pointer to struct
- * is quite beyond me. I just copied it from the stock completion.
- */
-struct ub_completion {
- unsigned int done;
- spinlock_t lock;
-};
-
-static DEFINE_MUTEX(ub_mutex);
-static inline void ub_init_completion(struct ub_completion *x)
-{
- x->done = 0;
- spin_lock_init(&x->lock);
-}
-
-#define UB_INIT_COMPLETION(x) ((x).done = 0)
-
-static void ub_complete(struct ub_completion *x)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&x->lock, flags);
- x->done++;
- spin_unlock_irqrestore(&x->lock, flags);
-}
-
-static int ub_is_completed(struct ub_completion *x)
-{
- unsigned long flags;
- int ret;
-
- spin_lock_irqsave(&x->lock, flags);
- ret = x->done;
- spin_unlock_irqrestore(&x->lock, flags);
- return ret;
-}
-
-/*
- */
-struct ub_scsi_cmd_queue {
- int qlen, qmax;
- struct ub_scsi_cmd *head, *tail;
-};
-
-/*
- * The block device instance (one per LUN).
- */
-struct ub_lun {
- struct ub_dev *udev;
- struct list_head link;
- struct gendisk *disk;
- int id; /* Host index */
- int num; /* LUN number */
- char name[16];
-
- int changed; /* Media was changed */
- int removable;
- int readonly;
-
- struct ub_request urq;
-
- /* Use Ingo's mempool if or when we have more than one command. */
- /*
- * Currently we never need more than one command for the whole device.
- * However, giving every LUN a command is a cheap and automatic way
- * to enforce fairness between them.
- */
- int cmda[1];
- struct ub_scsi_cmd cmdv[1];
-
- struct ub_capacity capacity;
-};
-
-/*
- * The USB device instance.
- */
-struct ub_dev {
- spinlock_t *lock;
- atomic_t poison; /* The USB device is disconnected */
- int openc; /* protected by ub_lock! */
- /* kref is too implicit for our taste */
- int reset; /* Reset is running */
- int bad_resid;
- unsigned int tagcnt;
- char name[12];
- struct usb_device *dev;
- struct usb_interface *intf;
-
- struct list_head luns;
-
- unsigned int send_bulk_pipe; /* cached pipe values */
- unsigned int recv_bulk_pipe;
- unsigned int send_ctrl_pipe;
- unsigned int recv_ctrl_pipe;
-
- struct tasklet_struct tasklet;
-
- struct ub_scsi_cmd_queue cmd_queue;
- struct ub_scsi_cmd top_rqs_cmd; /* REQUEST SENSE */
- unsigned char top_sense[UB_SENSE_SIZE];
-
- struct ub_completion work_done;
- struct urb work_urb;
- struct timer_list work_timer;
- int last_pipe; /* What might need clearing */
- __le32 signature; /* Learned signature */
- struct bulk_cb_wrap work_bcb;
- struct bulk_cs_wrap work_bcs;
- struct usb_ctrlrequest work_cr;
-
- struct work_struct reset_work;
- wait_queue_head_t reset_wait;
-};
-
-/*
- */
-static void ub_cleanup(struct ub_dev *sc);
-static int ub_request_fn_1(struct ub_lun *lun, struct request *rq);
-static void ub_cmd_build_block(struct ub_dev *sc, struct ub_lun *lun,
- struct ub_scsi_cmd *cmd, struct ub_request *urq);
-static void ub_cmd_build_packet(struct ub_dev *sc, struct ub_lun *lun,
- struct ub_scsi_cmd *cmd, struct ub_request *urq);
-static void ub_rw_cmd_done(struct ub_dev *sc, struct ub_scsi_cmd *cmd);
-static void ub_end_rq(struct request *rq, unsigned int status);
-static int ub_rw_cmd_retry(struct ub_dev *sc, struct ub_lun *lun,
- struct ub_request *urq, struct ub_scsi_cmd *cmd);
-static int ub_submit_scsi(struct ub_dev *sc, struct ub_scsi_cmd *cmd);
-static void ub_urb_complete(struct urb *urb);
-static void ub_scsi_action(unsigned long _dev);
-static void ub_scsi_dispatch(struct ub_dev *sc);
-static void ub_scsi_urb_compl(struct ub_dev *sc, struct ub_scsi_cmd *cmd);
-static void ub_data_start(struct ub_dev *sc, struct ub_scsi_cmd *cmd);
-static void ub_state_done(struct ub_dev *sc, struct ub_scsi_cmd *cmd, int rc);
-static int __ub_state_stat(struct ub_dev *sc, struct ub_scsi_cmd *cmd);
-static void ub_state_stat(struct ub_dev *sc, struct ub_scsi_cmd *cmd);
-static void ub_state_stat_counted(struct ub_dev *sc, struct ub_scsi_cmd *cmd);
-static void ub_state_sense(struct ub_dev *sc, struct ub_scsi_cmd *cmd);
-static int ub_submit_clear_stall(struct ub_dev *sc, struct ub_scsi_cmd *cmd,
- int stalled_pipe);
-static void ub_top_sense_done(struct ub_dev *sc, struct ub_scsi_cmd *scmd);
-static void ub_reset_enter(struct ub_dev *sc, int try);
-static void ub_reset_task(struct work_struct *work);
-static int ub_sync_tur(struct ub_dev *sc, struct ub_lun *lun);
-static int ub_sync_read_cap(struct ub_dev *sc, struct ub_lun *lun,
- struct ub_capacity *ret);
-static int ub_sync_reset(struct ub_dev *sc);
-static int ub_probe_clear_stall(struct ub_dev *sc, int stalled_pipe);
-static int ub_probe_lun(struct ub_dev *sc, int lnum);
-
-/*
- */
-#ifdef CONFIG_USB_LIBUSUAL
-
-#define ub_usb_ids usb_storage_usb_ids
-#else
-
-static const struct usb_device_id ub_usb_ids[] = {
- { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, USB_SC_SCSI, USB_PR_BULK) },
- { }
-};
-
-MODULE_DEVICE_TABLE(usb, ub_usb_ids);
-#endif /* CONFIG_USB_LIBUSUAL */
-
-/*
- * Find me a way to identify "next free minor" for add_disk(),
- * and the array disappears the next day. However, the number of
- * hosts has something to do with the naming and /proc/partitions.
- * This has to be thought out in detail before changing.
- * If UB_MAX_HOST was 1000, we'd use a bitmap. Or a better data structure.
- */
-#define UB_MAX_HOSTS 26
-static char ub_hostv[UB_MAX_HOSTS];
-
-#define UB_QLOCK_NUM 5
-static spinlock_t ub_qlockv[UB_QLOCK_NUM];
-static int ub_qlock_next = 0;
-
-static DEFINE_SPINLOCK(ub_lock); /* Locks globals and ->openc */
-
-/*
- * The id allocator.
- *
- * This also stores the host for indexing by minor, which is somewhat dirty.
- */
-static int ub_id_get(void)
-{
- unsigned long flags;
- int i;
-
- spin_lock_irqsave(&ub_lock, flags);
- for (i = 0; i < UB_MAX_HOSTS; i++) {
- if (ub_hostv[i] == 0) {
- ub_hostv[i] = 1;
- spin_unlock_irqrestore(&ub_lock, flags);
- return i;
- }
- }
- spin_unlock_irqrestore(&ub_lock, flags);
- return -1;
-}
-
-static void ub_id_put(int id)
-{
- unsigned long flags;
-
- if (id < 0 || id >= UB_MAX_HOSTS) {
- printk(KERN_ERR DRV_NAME ": bad host ID %d\n", id);
- return;
- }
-
- spin_lock_irqsave(&ub_lock, flags);
- if (ub_hostv[id] == 0) {
- spin_unlock_irqrestore(&ub_lock, flags);
- printk(KERN_ERR DRV_NAME ": freeing free host ID %d\n", id);
- return;
- }
- ub_hostv[id] = 0;
- spin_unlock_irqrestore(&ub_lock, flags);
-}
-
-/*
- * This is necessitated by the fact that blk_cleanup_queue does not
- * necesserily destroy the queue. Instead, it may merely decrease q->refcnt.
- * Since our blk_init_queue() passes a spinlock common with ub_dev,
- * we have life time issues when ub_cleanup frees ub_dev.
- */
-static spinlock_t *ub_next_lock(void)
-{
- unsigned long flags;
- spinlock_t *ret;
-
- spin_lock_irqsave(&ub_lock, flags);
- ret = &ub_qlockv[ub_qlock_next];
- ub_qlock_next = (ub_qlock_next + 1) % UB_QLOCK_NUM;
- spin_unlock_irqrestore(&ub_lock, flags);
- return ret;
-}
-
-/*
- * Downcount for deallocation. This rides on two assumptions:
- * - once something is poisoned, its refcount cannot grow
- * - opens cannot happen at this time (del_gendisk was done)
- * If the above is true, we can drop the lock, which we need for
- * blk_cleanup_queue(): the silly thing may attempt to sleep.
- * [Actually, it never needs to sleep for us, but it calls might_sleep()]
- */
-static void ub_put(struct ub_dev *sc)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&ub_lock, flags);
- --sc->openc;
- if (sc->openc == 0 && atomic_read(&sc->poison)) {
- spin_unlock_irqrestore(&ub_lock, flags);
- ub_cleanup(sc);
- } else {
- spin_unlock_irqrestore(&ub_lock, flags);
- }
-}
-
-/*
- * Final cleanup and deallocation.
- */
-static void ub_cleanup(struct ub_dev *sc)
-{
- struct list_head *p;
- struct ub_lun *lun;
- struct request_queue *q;
-
- while (!list_empty(&sc->luns)) {
- p = sc->luns.next;
- lun = list_entry(p, struct ub_lun, link);
- list_del(p);
-
- /* I don't think queue can be NULL. But... Stolen from sx8.c */
- if ((q = lun->disk->queue) != NULL)
- blk_cleanup_queue(q);
- /*
- * If we zero disk->private_data BEFORE put_disk, we have
- * to check for NULL all over the place in open, release,
- * check_media and revalidate, because the block level
- * semaphore is well inside the put_disk.
- * But we cannot zero after the call, because *disk is gone.
- * The sd.c is blatantly racy in this area.
- */
- /* disk->private_data = NULL; */
- put_disk(lun->disk);
- lun->disk = NULL;
-
- ub_id_put(lun->id);
- kfree(lun);
- }
-
- usb_set_intfdata(sc->intf, NULL);
- usb_put_intf(sc->intf);
- usb_put_dev(sc->dev);
- kfree(sc);
-}
-
-/*
- * The "command allocator".
- */
-static struct ub_scsi_cmd *ub_get_cmd(struct ub_lun *lun)
-{
- struct ub_scsi_cmd *ret;
-
- if (lun->cmda[0])
- return NULL;
- ret = &lun->cmdv[0];
- lun->cmda[0] = 1;
- return ret;
-}
-
-static void ub_put_cmd(struct ub_lun *lun, struct ub_scsi_cmd *cmd)
-{
- if (cmd != &lun->cmdv[0]) {
- printk(KERN_WARNING "%s: releasing a foreign cmd %p\n",
- lun->name, cmd);
- return;
- }
- if (!lun->cmda[0]) {
- printk(KERN_WARNING "%s: releasing a free cmd\n", lun->name);
- return;
- }
- lun->cmda[0] = 0;
-}
-
-/*
- * The command queue.
- */
-static void ub_cmdq_add(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
-{
- struct ub_scsi_cmd_queue *t = &sc->cmd_queue;
-
- if (t->qlen++ == 0) {
- t->head = cmd;
- t->tail = cmd;
- } else {
- t->tail->next = cmd;
- t->tail = cmd;
- }
-
- if (t->qlen > t->qmax)
- t->qmax = t->qlen;
-}
-
-static void ub_cmdq_insert(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
-{
- struct ub_scsi_cmd_queue *t = &sc->cmd_queue;
-
- if (t->qlen++ == 0) {
- t->head = cmd;
- t->tail = cmd;
- } else {
- cmd->next = t->head;
- t->head = cmd;
- }
-
- if (t->qlen > t->qmax)
- t->qmax = t->qlen;
-}
-
-static struct ub_scsi_cmd *ub_cmdq_pop(struct ub_dev *sc)
-{
- struct ub_scsi_cmd_queue *t = &sc->cmd_queue;
- struct ub_scsi_cmd *cmd;
-
- if (t->qlen == 0)
- return NULL;
- if (--t->qlen == 0)
- t->tail = NULL;
- cmd = t->head;
- t->head = cmd->next;
- cmd->next = NULL;
- return cmd;
-}
-
-#define ub_cmdq_peek(sc) ((sc)->cmd_queue.head)
-
-/*
- * The request function is our main entry point
- */
-
-static void ub_request_fn(struct request_queue *q)
-{
- struct ub_lun *lun = q->queuedata;
- struct request *rq;
-
- while ((rq = blk_peek_request(q)) != NULL) {
- if (ub_request_fn_1(lun, rq) != 0) {
- blk_stop_queue(q);
- break;
- }
- }
-}
-
-static int ub_request_fn_1(struct ub_lun *lun, struct request *rq)
-{
- struct ub_dev *sc = lun->udev;
- struct ub_scsi_cmd *cmd;
- struct ub_request *urq;
- int n_elem;
-
- if (atomic_read(&sc->poison)) {
- blk_start_request(rq);
- ub_end_rq(rq, DID_NO_CONNECT << 16);
- return 0;
- }
-
- if (lun->changed && rq->cmd_type != REQ_TYPE_BLOCK_PC) {
- blk_start_request(rq);
- ub_end_rq(rq, SAM_STAT_CHECK_CONDITION);
- return 0;
- }
-
- if (lun->urq.rq != NULL)
- return -1;
- if ((cmd = ub_get_cmd(lun)) == NULL)
- return -1;
- memset(cmd, 0, sizeof(struct ub_scsi_cmd));
-
- blk_start_request(rq);
-
- urq = &lun->urq;
- memset(urq, 0, sizeof(struct ub_request));
- urq->rq = rq;
-
- /*
- * get scatterlist from block layer
- */
- sg_init_table(&urq->sgv[0], UB_MAX_REQ_SG);
- n_elem = blk_rq_map_sg(lun->disk->queue, rq, &urq->sgv[0]);
- if (n_elem < 0) {
- /* Impossible, because blk_rq_map_sg should not hit ENOMEM. */
- printk(KERN_INFO "%s: failed request map (%d)\n",
- lun->name, n_elem);
- goto drop;
- }
- if (n_elem > UB_MAX_REQ_SG) { /* Paranoia */
- printk(KERN_WARNING "%s: request with %d segments\n",
- lun->name, n_elem);
- goto drop;
- }
- urq->nsg = n_elem;
-
- if (rq->cmd_type == REQ_TYPE_BLOCK_PC) {
- ub_cmd_build_packet(sc, lun, cmd, urq);
- } else {
- ub_cmd_build_block(sc, lun, cmd, urq);
- }
- cmd->state = UB_CMDST_INIT;
- cmd->lun = lun;
- cmd->done = ub_rw_cmd_done;
- cmd->back = urq;
-
- cmd->tag = sc->tagcnt++;
- if (ub_submit_scsi(sc, cmd) != 0)
- goto drop;
-
- return 0;
-
-drop:
- ub_put_cmd(lun, cmd);
- ub_end_rq(rq, DID_ERROR << 16);
- return 0;
-}
-
-static void ub_cmd_build_block(struct ub_dev *sc, struct ub_lun *lun,
- struct ub_scsi_cmd *cmd, struct ub_request *urq)
-{
- struct request *rq = urq->rq;
- unsigned int block, nblks;
-
- if (rq_data_dir(rq) == WRITE)
- cmd->dir = UB_DIR_WRITE;
- else
- cmd->dir = UB_DIR_READ;
-
- cmd->nsg = urq->nsg;
- memcpy(cmd->sgv, urq->sgv, sizeof(struct scatterlist) * cmd->nsg);
-
- /*
- * build the command
- *
- * The call to blk_queue_logical_block_size() guarantees that request
- * is aligned, but it is given in terms of 512 byte units, always.
- */
- block = blk_rq_pos(rq) >> lun->capacity.bshift;
- nblks = blk_rq_sectors(rq) >> lun->capacity.bshift;
-
- cmd->cdb[0] = (cmd->dir == UB_DIR_READ)? READ_10: WRITE_10;
- /* 10-byte uses 4 bytes of LBA: 2147483648KB, 2097152MB, 2048GB */
- cmd->cdb[2] = block >> 24;
- cmd->cdb[3] = block >> 16;
- cmd->cdb[4] = block >> 8;
- cmd->cdb[5] = block;
- cmd->cdb[7] = nblks >> 8;
- cmd->cdb[8] = nblks;
- cmd->cdb_len = 10;
-
- cmd->len = blk_rq_bytes(rq);
-}
-
-static void ub_cmd_build_packet(struct ub_dev *sc, struct ub_lun *lun,
- struct ub_scsi_cmd *cmd, struct ub_request *urq)
-{
- struct request *rq = urq->rq;
-
- if (blk_rq_bytes(rq) == 0) {
- cmd->dir = UB_DIR_NONE;
- } else {
- if (rq_data_dir(rq) == WRITE)
- cmd->dir = UB_DIR_WRITE;
- else
- cmd->dir = UB_DIR_READ;
- }
-
- cmd->nsg = urq->nsg;
- memcpy(cmd->sgv, urq->sgv, sizeof(struct scatterlist) * cmd->nsg);
-
- memcpy(&cmd->cdb, rq->cmd, rq->cmd_len);
- cmd->cdb_len = rq->cmd_len;
-
- cmd->len = blk_rq_bytes(rq);
-
- /*
- * To reapply this to every URB is not as incorrect as it looks.
- * In return, we avoid any complicated tracking calculations.
- */
- cmd->timeo = rq->timeout;
-}
-
-static void ub_rw_cmd_done(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
-{
- struct ub_lun *lun = cmd->lun;
- struct ub_request *urq = cmd->back;
- struct request *rq;
- unsigned int scsi_status;
-
- rq = urq->rq;
-
- if (cmd->error == 0) {
- if (rq->cmd_type == REQ_TYPE_BLOCK_PC) {
- if (cmd->act_len >= rq->resid_len)
- rq->resid_len = 0;
- else
- rq->resid_len -= cmd->act_len;
- scsi_status = 0;
- } else {
- if (cmd->act_len != cmd->len) {
- scsi_status = SAM_STAT_CHECK_CONDITION;
- } else {
- scsi_status = 0;
- }
- }
- } else {
- if (rq->cmd_type == REQ_TYPE_BLOCK_PC) {
- /* UB_SENSE_SIZE is smaller than SCSI_SENSE_BUFFERSIZE */
- memcpy(rq->sense, sc->top_sense, UB_SENSE_SIZE);
- rq->sense_len = UB_SENSE_SIZE;
- if (sc->top_sense[0] != 0)
- scsi_status = SAM_STAT_CHECK_CONDITION;
- else
- scsi_status = DID_ERROR << 16;
- } else {
- if (cmd->error == -EIO &&
- (cmd->key == 0 ||
- cmd->key == MEDIUM_ERROR ||
- cmd->key == UNIT_ATTENTION)) {
- if (ub_rw_cmd_retry(sc, lun, urq, cmd) == 0)
- return;
- }
- scsi_status = SAM_STAT_CHECK_CONDITION;
- }
- }
-
- urq->rq = NULL;
-
- ub_put_cmd(lun, cmd);
- ub_end_rq(rq, scsi_status);
- blk_start_queue(lun->disk->queue);
-}
-
-static void ub_end_rq(struct request *rq, unsigned int scsi_status)
-{
- int error;
-
- if (scsi_status == 0) {
- error = 0;
- } else {
- error = -EIO;
- rq->errors = scsi_status;
- }
- __blk_end_request_all(rq, error);
-}
-
-static int ub_rw_cmd_retry(struct ub_dev *sc, struct ub_lun *lun,
- struct ub_request *urq, struct ub_scsi_cmd *cmd)
-{
-
- if (atomic_read(&sc->poison))
- return -ENXIO;
-
- ub_reset_enter(sc, urq->current_try);
-
- if (urq->current_try >= 3)
- return -EIO;
- urq->current_try++;
-
- /* Remove this if anyone complains of flooding. */
- printk(KERN_DEBUG "%s: dir %c len/act %d/%d "
- "[sense %x %02x %02x] retry %d\n",
- sc->name, UB_DIR_CHAR(cmd->dir), cmd->len, cmd->act_len,
- cmd->key, cmd->asc, cmd->ascq, urq->current_try);
-
- memset(cmd, 0, sizeof(struct ub_scsi_cmd));
- ub_cmd_build_block(sc, lun, cmd, urq);
-
- cmd->state = UB_CMDST_INIT;
- cmd->lun = lun;
- cmd->done = ub_rw_cmd_done;
- cmd->back = urq;
-
- cmd->tag = sc->tagcnt++;
-
-#if 0 /* Wasteful */
- return ub_submit_scsi(sc, cmd);
-#else
- ub_cmdq_add(sc, cmd);
- return 0;
-#endif
-}
-
-/*
- * Submit a regular SCSI operation (not an auto-sense).
- *
- * The Iron Law of Good Submit Routine is:
- * Zero return - callback is done, Nonzero return - callback is not done.
- * No exceptions.
- *
- * Host is assumed locked.
- */
-static int ub_submit_scsi(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
-{
-
- if (cmd->state != UB_CMDST_INIT ||
- (cmd->dir != UB_DIR_NONE && cmd->len == 0)) {
- return -EINVAL;
- }
-
- ub_cmdq_add(sc, cmd);
- /*
- * We can call ub_scsi_dispatch(sc) right away here, but it's a little
- * safer to jump to a tasklet, in case upper layers do something silly.
- */
- tasklet_schedule(&sc->tasklet);
- return 0;
-}
-
-/*
- * Submit the first URB for the queued command.
- * This function does not deal with queueing in any way.
- */
-static int ub_scsi_cmd_start(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
-{
- struct bulk_cb_wrap *bcb;
- int rc;
-
- bcb = &sc->work_bcb;
-
- /*
- * ``If the allocation length is eighteen or greater, and a device
- * server returns less than eithteen bytes of data, the application
- * client should assume that the bytes not transferred would have been
- * zeroes had the device server returned those bytes.''
- *
- * We zero sense for all commands so that when a packet request
- * fails it does not return a stale sense.
- */
- memset(&sc->top_sense, 0, UB_SENSE_SIZE);
-
- /* set up the command wrapper */
- bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
- bcb->Tag = cmd->tag; /* Endianness is not important */
- bcb->DataTransferLength = cpu_to_le32(cmd->len);
- bcb->Flags = (cmd->dir == UB_DIR_READ) ? 0x80 : 0;
- bcb->Lun = (cmd->lun != NULL) ? cmd->lun->num : 0;
- bcb->Length = cmd->cdb_len;
-
- /* copy the command payload */
- memcpy(bcb->CDB, cmd->cdb, UB_MAX_CDB_SIZE);
-
- UB_INIT_COMPLETION(sc->work_done);
-
- sc->last_pipe = sc->send_bulk_pipe;
- usb_fill_bulk_urb(&sc->work_urb, sc->dev, sc->send_bulk_pipe,
- bcb, US_BULK_CB_WRAP_LEN, ub_urb_complete, sc);
-
- if ((rc = usb_submit_urb(&sc->work_urb, GFP_ATOMIC)) != 0) {
- /* XXX Clear stalls */
- ub_complete(&sc->work_done);
- return rc;
- }
-
- sc->work_timer.expires = jiffies + UB_URB_TIMEOUT;
- add_timer(&sc->work_timer);
-
- cmd->state = UB_CMDST_CMD;
- return 0;
-}
-
-/*
- * Timeout handler.
- */
-static void ub_urb_timeout(unsigned long arg)
-{
- struct ub_dev *sc = (struct ub_dev *) arg;
- unsigned long flags;
-
- spin_lock_irqsave(sc->lock, flags);
- if (!ub_is_completed(&sc->work_done))
- usb_unlink_urb(&sc->work_urb);
- spin_unlock_irqrestore(sc->lock, flags);
-}
-
-/*
- * Completion routine for the work URB.
- *
- * This can be called directly from usb_submit_urb (while we have
- * the sc->lock taken) and from an interrupt (while we do NOT have
- * the sc->lock taken). Therefore, bounce this off to a tasklet.
- */
-static void ub_urb_complete(struct urb *urb)
-{
- struct ub_dev *sc = urb->context;
-
- ub_complete(&sc->work_done);
- tasklet_schedule(&sc->tasklet);
-}
-
-static void ub_scsi_action(unsigned long _dev)
-{
- struct ub_dev *sc = (struct ub_dev *) _dev;
- unsigned long flags;
-
- spin_lock_irqsave(sc->lock, flags);
- ub_scsi_dispatch(sc);
- spin_unlock_irqrestore(sc->lock, flags);
-}
-
-static void ub_scsi_dispatch(struct ub_dev *sc)
-{
- struct ub_scsi_cmd *cmd;
- int rc;
-
- while (!sc->reset && (cmd = ub_cmdq_peek(sc)) != NULL) {
- if (cmd->state == UB_CMDST_DONE) {
- ub_cmdq_pop(sc);
- (*cmd->done)(sc, cmd);
- } else if (cmd->state == UB_CMDST_INIT) {
- if ((rc = ub_scsi_cmd_start(sc, cmd)) == 0)
- break;
- cmd->error = rc;
- cmd->state = UB_CMDST_DONE;
- } else {
- if (!ub_is_completed(&sc->work_done))
- break;
- del_timer(&sc->work_timer);
- ub_scsi_urb_compl(sc, cmd);
- }
- }
-}
-
-static void ub_scsi_urb_compl(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
-{
- struct urb *urb = &sc->work_urb;
- struct bulk_cs_wrap *bcs;
- int endp;
- int len;
- int rc;
-
- if (atomic_read(&sc->poison)) {
- ub_state_done(sc, cmd, -ENODEV);
- return;
- }
-
- endp = usb_pipeendpoint(sc->last_pipe);
- if (usb_pipein(sc->last_pipe))
- endp |= USB_DIR_IN;
-
- if (cmd->state == UB_CMDST_CLEAR) {
- if (urb->status == -EPIPE) {
- /*
- * STALL while clearning STALL.
- * The control pipe clears itself - nothing to do.
- */
- printk(KERN_NOTICE "%s: stall on control pipe\n",
- sc->name);
- goto Bad_End;
- }
-
- /*
- * We ignore the result for the halt clear.
- */
-
- usb_reset_endpoint(sc->dev, endp);
-
- ub_state_sense(sc, cmd);
-
- } else if (cmd->state == UB_CMDST_CLR2STS) {
- if (urb->status == -EPIPE) {
- printk(KERN_NOTICE "%s: stall on control pipe\n",
- sc->name);
- goto Bad_End;
- }
-
- /*
- * We ignore the result for the halt clear.
- */
-
- usb_reset_endpoint(sc->dev, endp);
-
- ub_state_stat(sc, cmd);
-
- } else if (cmd->state == UB_CMDST_CLRRS) {
- if (urb->status == -EPIPE) {
- printk(KERN_NOTICE "%s: stall on control pipe\n",
- sc->name);
- goto Bad_End;
- }
-
- /*
- * We ignore the result for the halt clear.
- */
-
- usb_reset_endpoint(sc->dev, endp);
-
- ub_state_stat_counted(sc, cmd);
-
- } else if (cmd->state == UB_CMDST_CMD) {
- switch (urb->status) {
- case 0:
- break;
- case -EOVERFLOW:
- goto Bad_End;
- case -EPIPE:
- rc = ub_submit_clear_stall(sc, cmd, sc->last_pipe);
- if (rc != 0) {
- printk(KERN_NOTICE "%s: "
- "unable to submit clear (%d)\n",
- sc->name, rc);
- /*
- * This is typically ENOMEM or some other such shit.
- * Retrying is pointless. Just do Bad End on it...
- */
- ub_state_done(sc, cmd, rc);
- return;
- }
- cmd->state = UB_CMDST_CLEAR;
- return;
- case -ESHUTDOWN: /* unplug */
- case -EILSEQ: /* unplug timeout on uhci */
- ub_state_done(sc, cmd, -ENODEV);
- return;
- default:
- goto Bad_End;
- }
- if (urb->actual_length != US_BULK_CB_WRAP_LEN) {
- goto Bad_End;
- }
-
- if (cmd->dir == UB_DIR_NONE || cmd->nsg < 1) {
- ub_state_stat(sc, cmd);
- return;
- }
-
- // udelay(125); // usb-storage has this
- ub_data_start(sc, cmd);
-
- } else if (cmd->state == UB_CMDST_DATA) {
- if (urb->status == -EPIPE) {
- rc = ub_submit_clear_stall(sc, cmd, sc->last_pipe);
- if (rc != 0) {
- printk(KERN_NOTICE "%s: "
- "unable to submit clear (%d)\n",
- sc->name, rc);
- ub_state_done(sc, cmd, rc);
- return;
- }
- cmd->state = UB_CMDST_CLR2STS;
- return;
- }
- if (urb->status == -EOVERFLOW) {
- /*
- * A babble? Failure, but we must transfer CSW now.
- */
- cmd->error = -EOVERFLOW; /* A cheap trick... */
- ub_state_stat(sc, cmd);
- return;
- }
-
- if (cmd->dir == UB_DIR_WRITE) {
- /*
- * Do not continue writes in case of a failure.
- * Doing so would cause sectors to be mixed up,
- * which is worse than sectors lost.
- *
- * We must try to read the CSW, or many devices
- * get confused.
- */
- len = urb->actual_length;
- if (urb->status != 0 ||
- len != cmd->sgv[cmd->current_sg].length) {
- cmd->act_len += len;
-
- cmd->error = -EIO;
- ub_state_stat(sc, cmd);
- return;
- }
-
- } else {
- /*
- * If an error occurs on read, we record it, and
- * continue to fetch data in order to avoid bubble.
- *
- * As a small shortcut, we stop if we detect that
- * a CSW mixed into data.
- */
- if (urb->status != 0)
- cmd->error = -EIO;
-
- len = urb->actual_length;
- if (urb->status != 0 ||
- len != cmd->sgv[cmd->current_sg].length) {
- if ((len & 0x1FF) == US_BULK_CS_WRAP_LEN)
- goto Bad_End;
- }
- }
-
- cmd->act_len += urb->actual_length;
-
- if (++cmd->current_sg < cmd->nsg) {
- ub_data_start(sc, cmd);
- return;
- }
- ub_state_stat(sc, cmd);
-
- } else if (cmd->state == UB_CMDST_STAT) {
- if (urb->status == -EPIPE) {
- rc = ub_submit_clear_stall(sc, cmd, sc->last_pipe);
- if (rc != 0) {
- printk(KERN_NOTICE "%s: "
- "unable to submit clear (%d)\n",
- sc->name, rc);
- ub_state_done(sc, cmd, rc);
- return;
- }
-
- /*
- * Having a stall when getting CSW is an error, so
- * make sure uppper levels are not oblivious to it.
- */
- cmd->error = -EIO; /* A cheap trick... */
-
- cmd->state = UB_CMDST_CLRRS;
- return;
- }
-
- /* Catch everything, including -EOVERFLOW and other nasties. */
- if (urb->status != 0)
- goto Bad_End;
-
- if (urb->actual_length == 0) {
- ub_state_stat_counted(sc, cmd);
- return;
- }
-
- /*
- * Check the returned Bulk protocol status.
- * The status block has to be validated first.
- */
-
- bcs = &sc->work_bcs;
-
- if (sc->signature == cpu_to_le32(0)) {
- /*
- * This is the first reply, so do not perform the check.
- * Instead, remember the signature the device uses
- * for future checks. But do not allow a nul.
- */
- sc->signature = bcs->Signature;
- if (sc->signature == cpu_to_le32(0)) {
- ub_state_stat_counted(sc, cmd);
- return;
- }
- } else {
- if (bcs->Signature != sc->signature) {
- ub_state_stat_counted(sc, cmd);
- return;
- }
- }
-
- if (bcs->Tag != cmd->tag) {
- /*
- * This usually happens when we disagree with the
- * device's microcode about something. For instance,
- * a few of them throw this after timeouts. They buffer
- * commands and reply at commands we timed out before.
- * Without flushing these replies we loop forever.
- */
- ub_state_stat_counted(sc, cmd);
- return;
- }
-
- if (!sc->bad_resid) {
- len = le32_to_cpu(bcs->Residue);
- if (len != cmd->len - cmd->act_len) {
- /*
- * Only start ignoring if this cmd ended well.
- */
- if (cmd->len == cmd->act_len) {
- printk(KERN_NOTICE "%s: "
- "bad residual %d of %d, ignoring\n",
- sc->name, len, cmd->len);
- sc->bad_resid = 1;
- }
- }
- }
-
- switch (bcs->Status) {
- case US_BULK_STAT_OK:
- break;
- case US_BULK_STAT_FAIL:
- ub_state_sense(sc, cmd);
- return;
- case US_BULK_STAT_PHASE:
- goto Bad_End;
- default:
- printk(KERN_INFO "%s: unknown CSW status 0x%x\n",
- sc->name, bcs->Status);
- ub_state_done(sc, cmd, -EINVAL);
- return;
- }
-
- /* Not zeroing error to preserve a babble indicator */
- if (cmd->error != 0) {
- ub_state_sense(sc, cmd);
- return;
- }
- cmd->state = UB_CMDST_DONE;
- ub_cmdq_pop(sc);
- (*cmd->done)(sc, cmd);
-
- } else if (cmd->state == UB_CMDST_SENSE) {
- ub_state_done(sc, cmd, -EIO);
-
- } else {
- printk(KERN_WARNING "%s: wrong command state %d\n",
- sc->name, cmd->state);
- ub_state_done(sc, cmd, -EINVAL);
- return;
- }
- return;
-
-Bad_End: /* Little Excel is dead */
- ub_state_done(sc, cmd, -EIO);
-}
-
-/*
- * Factorization helper for the command state machine:
- * Initiate a data segment transfer.
- */
-static void ub_data_start(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
-{
- struct scatterlist *sg = &cmd->sgv[cmd->current_sg];
- int pipe;
- int rc;
-
- UB_INIT_COMPLETION(sc->work_done);
-
- if (cmd->dir == UB_DIR_READ)
- pipe = sc->recv_bulk_pipe;
- else
- pipe = sc->send_bulk_pipe;
- sc->last_pipe = pipe;
- usb_fill_bulk_urb(&sc->work_urb, sc->dev, pipe, sg_virt(sg),
- sg->length, ub_urb_complete, sc);
-
- if ((rc = usb_submit_urb(&sc->work_urb, GFP_ATOMIC)) != 0) {
- /* XXX Clear stalls */
- ub_complete(&sc->work_done);
- ub_state_done(sc, cmd, rc);
- return;
- }
-
- if (cmd->timeo)
- sc->work_timer.expires = jiffies + cmd->timeo;
- else
- sc->work_timer.expires = jiffies + UB_DATA_TIMEOUT;
- add_timer(&sc->work_timer);
-
- cmd->state = UB_CMDST_DATA;
-}
-
-/*
- * Factorization helper for the command state machine:
- * Finish the command.
- */
-static void ub_state_done(struct ub_dev *sc, struct ub_scsi_cmd *cmd, int rc)
-{
-
- cmd->error = rc;
- cmd->state = UB_CMDST_DONE;
- ub_cmdq_pop(sc);
- (*cmd->done)(sc, cmd);
-}
-
-/*
- * Factorization helper for the command state machine:
- * Submit a CSW read.
- */
-static int __ub_state_stat(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
-{
- int rc;
-
- UB_INIT_COMPLETION(sc->work_done);
-
- sc->last_pipe = sc->recv_bulk_pipe;
- usb_fill_bulk_urb(&sc->work_urb, sc->dev, sc->recv_bulk_pipe,
- &sc->work_bcs, US_BULK_CS_WRAP_LEN, ub_urb_complete, sc);
-
- if ((rc = usb_submit_urb(&sc->work_urb, GFP_ATOMIC)) != 0) {
- /* XXX Clear stalls */
- ub_complete(&sc->work_done);
- ub_state_done(sc, cmd, rc);
- return -1;
- }
-
- if (cmd->timeo)
- sc->work_timer.expires = jiffies + cmd->timeo;
- else
- sc->work_timer.expires = jiffies + UB_STAT_TIMEOUT;
- add_timer(&sc->work_timer);
- return 0;
-}
-
-/*
- * Factorization helper for the command state machine:
- * Submit a CSW read and go to STAT state.
- */
-static void ub_state_stat(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
-{
-
- if (__ub_state_stat(sc, cmd) != 0)
- return;
-
- cmd->stat_count = 0;
- cmd->state = UB_CMDST_STAT;
-}
-
-/*
- * Factorization helper for the command state machine:
- * Submit a CSW read and go to STAT state with counter (along [C] path).
- */
-static void ub_state_stat_counted(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
-{
-
- if (++cmd->stat_count >= 4) {
- ub_state_sense(sc, cmd);
- return;
- }
-
- if (__ub_state_stat(sc, cmd) != 0)
- return;
-
- cmd->state = UB_CMDST_STAT;
-}
-
-/*
- * Factorization helper for the command state machine:
- * Submit a REQUEST SENSE and go to SENSE state.
- */
-static void ub_state_sense(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
-{
- struct ub_scsi_cmd *scmd;
- struct scatterlist *sg;
- int rc;
-
- if (cmd->cdb[0] == REQUEST_SENSE) {
- rc = -EPIPE;
- goto error;
- }
-
- scmd = &sc->top_rqs_cmd;
- memset(scmd, 0, sizeof(struct ub_scsi_cmd));
- scmd->cdb[0] = REQUEST_SENSE;
- scmd->cdb[4] = UB_SENSE_SIZE;
- scmd->cdb_len = 6;
- scmd->dir = UB_DIR_READ;
- scmd->state = UB_CMDST_INIT;
- scmd->nsg = 1;
- sg = &scmd->sgv[0];
- sg_init_table(sg, UB_MAX_REQ_SG);
- sg_set_page(sg, virt_to_page(sc->top_sense), UB_SENSE_SIZE,
- (unsigned long)sc->top_sense & (PAGE_SIZE-1));
- scmd->len = UB_SENSE_SIZE;
- scmd->lun = cmd->lun;
- scmd->done = ub_top_sense_done;
- scmd->back = cmd;
-
- scmd->tag = sc->tagcnt++;
-
- cmd->state = UB_CMDST_SENSE;
-
- ub_cmdq_insert(sc, scmd);
- return;
-
-error:
- ub_state_done(sc, cmd, rc);
-}
-
-/*
- * A helper for the command's state machine:
- * Submit a stall clear.
- */
-static int ub_submit_clear_stall(struct ub_dev *sc, struct ub_scsi_cmd *cmd,
- int stalled_pipe)
-{
- int endp;
- struct usb_ctrlrequest *cr;
- int rc;
-
- endp = usb_pipeendpoint(stalled_pipe);
- if (usb_pipein (stalled_pipe))
- endp |= USB_DIR_IN;
-
- cr = &sc->work_cr;
- cr->bRequestType = USB_RECIP_ENDPOINT;
- cr->bRequest = USB_REQ_CLEAR_FEATURE;
- cr->wValue = cpu_to_le16(USB_ENDPOINT_HALT);
- cr->wIndex = cpu_to_le16(endp);
- cr->wLength = cpu_to_le16(0);
-
- UB_INIT_COMPLETION(sc->work_done);
-
- usb_fill_control_urb(&sc->work_urb, sc->dev, sc->send_ctrl_pipe,
- (unsigned char*) cr, NULL, 0, ub_urb_complete, sc);
-
- if ((rc = usb_submit_urb(&sc->work_urb, GFP_ATOMIC)) != 0) {
- ub_complete(&sc->work_done);
- return rc;
- }
-
- sc->work_timer.expires = jiffies + UB_CTRL_TIMEOUT;
- add_timer(&sc->work_timer);
- return 0;
-}
-
-/*
- */
-static void ub_top_sense_done(struct ub_dev *sc, struct ub_scsi_cmd *scmd)
-{
- unsigned char *sense = sc->top_sense;
- struct ub_scsi_cmd *cmd;
-
- /*
- * Find the command which triggered the unit attention or a check,
- * save the sense into it, and advance its state machine.
- */
- if ((cmd = ub_cmdq_peek(sc)) == NULL) {
- printk(KERN_WARNING "%s: sense done while idle\n", sc->name);
- return;
- }
- if (cmd != scmd->back) {
- printk(KERN_WARNING "%s: "
- "sense done for wrong command 0x%x\n",
- sc->name, cmd->tag);
- return;
- }
- if (cmd->state != UB_CMDST_SENSE) {
- printk(KERN_WARNING "%s: sense done with bad cmd state %d\n",
- sc->name, cmd->state);
- return;
- }
-
- /*
- * Ignoring scmd->act_len, because the buffer was pre-zeroed.
- */
- cmd->key = sense[2] & 0x0F;
- cmd->asc = sense[12];
- cmd->ascq = sense[13];
-
- ub_scsi_urb_compl(sc, cmd);
-}
-
-/*
- * Reset management
- */
-
-static void ub_reset_enter(struct ub_dev *sc, int try)
-{
-
- if (sc->reset) {
- /* This happens often on multi-LUN devices. */
- return;
- }
- sc->reset = try + 1;
-
-#if 0 /* Not needed because the disconnect waits for us. */
- unsigned long flags;
- spin_lock_irqsave(&ub_lock, flags);
- sc->openc++;
- spin_unlock_irqrestore(&ub_lock, flags);
-#endif
-
-#if 0 /* We let them stop themselves. */
- struct ub_lun *lun;
- list_for_each_entry(lun, &sc->luns, link) {
- blk_stop_queue(lun->disk->queue);
- }
-#endif
-
- schedule_work(&sc->reset_work);
-}
-
-static void ub_reset_task(struct work_struct *work)
-{
- struct ub_dev *sc = container_of(work, struct ub_dev, reset_work);
- unsigned long flags;
- struct ub_lun *lun;
- int rc;
-
- if (!sc->reset) {
- printk(KERN_WARNING "%s: Running reset unrequested\n",
- sc->name);
- return;
- }
-
- if (atomic_read(&sc->poison)) {
- ;
- } else if ((sc->reset & 1) == 0) {
- ub_sync_reset(sc);
- msleep(700); /* usb-storage sleeps 6s (!) */
- ub_probe_clear_stall(sc, sc->recv_bulk_pipe);
- ub_probe_clear_stall(sc, sc->send_bulk_pipe);
- } else if (sc->dev->actconfig->desc.bNumInterfaces != 1) {
- ;
- } else {
- rc = usb_lock_device_for_reset(sc->dev, sc->intf);
- if (rc < 0) {
- printk(KERN_NOTICE
- "%s: usb_lock_device_for_reset failed (%d)\n",
- sc->name, rc);
- } else {
- rc = usb_reset_device(sc->dev);
- if (rc < 0) {
- printk(KERN_NOTICE "%s: "
- "usb_lock_device_for_reset failed (%d)\n",
- sc->name, rc);
- }
- usb_unlock_device(sc->dev);
- }
- }
-
- /*
- * In theory, no commands can be running while reset is active,
- * so nobody can ask for another reset, and so we do not need any
- * queues of resets or anything. We do need a spinlock though,
- * to interact with block layer.
- */
- spin_lock_irqsave(sc->lock, flags);
- sc->reset = 0;
- tasklet_schedule(&sc->tasklet);
- list_for_each_entry(lun, &sc->luns, link) {
- blk_start_queue(lun->disk->queue);
- }
- wake_up(&sc->reset_wait);
- spin_unlock_irqrestore(sc->lock, flags);
-}
-
-/*
- * XXX Reset brackets are too much hassle to implement, so just stub them
- * in order to prevent forced unbinding (which deadlocks solid when our
- * ->disconnect method waits for the reset to complete and this kills keventd).
- *
- * XXX Tell Alan to move usb_unlock_device inside of usb_reset_device,
- * or else the post_reset is invoked, and restats I/O on a locked device.
- */
-static int ub_pre_reset(struct usb_interface *iface) {
- return 0;
-}
-
-static int ub_post_reset(struct usb_interface *iface) {
- return 0;
-}
-
-/*
- * This is called from a process context.
- */
-static void ub_revalidate(struct ub_dev *sc, struct ub_lun *lun)
-{
-
- lun->readonly = 0; /* XXX Query this from the device */
-
- lun->capacity.nsec = 0;
- lun->capacity.bsize = 512;
- lun->capacity.bshift = 0;
-
- if (ub_sync_tur(sc, lun) != 0)
- return; /* Not ready */
- lun->changed = 0;
-
- if (ub_sync_read_cap(sc, lun, &lun->capacity) != 0) {
- /*
- * The retry here means something is wrong, either with the
- * device, with the transport, or with our code.
- * We keep this because sd.c has retries for capacity.
- */
- if (ub_sync_read_cap(sc, lun, &lun->capacity) != 0) {
- lun->capacity.nsec = 0;
- lun->capacity.bsize = 512;
- lun->capacity.bshift = 0;
- }
- }
-}
-
-/*
- * The open funcion.
- * This is mostly needed to keep refcounting, but also to support
- * media checks on removable media drives.
- */
-static int ub_bd_open(struct block_device *bdev, fmode_t mode)
-{
- struct ub_lun *lun = bdev->bd_disk->private_data;
- struct ub_dev *sc = lun->udev;
- unsigned long flags;
- int rc;
-
- spin_lock_irqsave(&ub_lock, flags);
- if (atomic_read(&sc->poison)) {
- spin_unlock_irqrestore(&ub_lock, flags);
- return -ENXIO;
- }
- sc->openc++;
- spin_unlock_irqrestore(&ub_lock, flags);
-
- if (lun->removable || lun->readonly)
- check_disk_change(bdev);
-
- /*
- * The sd.c considers ->media_present and ->changed not equivalent,
- * under some pretty murky conditions (a failure of READ CAPACITY).
- * We may need it one day.
- */
- if (lun->removable && lun->changed && !(mode & FMODE_NDELAY)) {
- rc = -ENOMEDIUM;
- goto err_open;
- }
-
- if (lun->readonly && (mode & FMODE_WRITE)) {
- rc = -EROFS;
- goto err_open;
- }
-
- return 0;
-
-err_open:
- ub_put(sc);
- return rc;
-}
-
-static int ub_bd_unlocked_open(struct block_device *bdev, fmode_t mode)
-{
- int ret;
-
- mutex_lock(&ub_mutex);
- ret = ub_bd_open(bdev, mode);
- mutex_unlock(&ub_mutex);
-
- return ret;
-}
-
-
-/*
- */
-static int ub_bd_release(struct gendisk *disk, fmode_t mode)
-{
- struct ub_lun *lun = disk->private_data;
- struct ub_dev *sc = lun->udev;
-
- mutex_lock(&ub_mutex);
- ub_put(sc);
- mutex_unlock(&ub_mutex);
-
- return 0;
-}
-
-/*
- * The ioctl interface.
- */
-static int ub_bd_ioctl(struct block_device *bdev, fmode_t mode,
- unsigned int cmd, unsigned long arg)
-{
- void __user *usermem = (void __user *) arg;
- int ret;
-
- mutex_lock(&ub_mutex);
- ret = scsi_cmd_blk_ioctl(bdev, mode, cmd, usermem);
- mutex_unlock(&ub_mutex);
-
- return ret;
-}
-
-/*
- * This is called by check_disk_change if we reported a media change.
- * The main onjective here is to discover the features of the media such as
- * the capacity, read-only status, etc. USB storage generally does not
- * need to be spun up, but if we needed it, this would be the place.
- *
- * This call can sleep.
- *
- * The return code is not used.
- */
-static int ub_bd_revalidate(struct gendisk *disk)
-{
- struct ub_lun *lun = disk->private_data;
-
- ub_revalidate(lun->udev, lun);
-
- /* XXX Support sector size switching like in sr.c */
- blk_queue_logical_block_size(disk->queue, lun->capacity.bsize);
- set_capacity(disk, lun->capacity.nsec);
- // set_disk_ro(sdkp->disk, lun->readonly);
-
- return 0;
-}
-
-/*
- * The check is called by the block layer to verify if the media
- * is still available. It is supposed to be harmless, lightweight and
- * non-intrusive in case the media was not changed.
- *
- * This call can sleep.
- *
- * The return code is bool!
- */
-static unsigned int ub_bd_check_events(struct gendisk *disk,
- unsigned int clearing)
-{
- struct ub_lun *lun = disk->private_data;
-
- if (!lun->removable)
- return 0;
-
- /*
- * We clean checks always after every command, so this is not
- * as dangerous as it looks. If the TEST_UNIT_READY fails here,
- * the device is actually not ready with operator or software
- * intervention required. One dangerous item might be a drive which
- * spins itself down, and come the time to write dirty pages, this
- * will fail, then block layer discards the data. Since we never
- * spin drives up, such devices simply cannot be used with ub anyway.
- */
- if (ub_sync_tur(lun->udev, lun) != 0) {
- lun->changed = 1;
- return DISK_EVENT_MEDIA_CHANGE;
- }
-
- return lun->changed ? DISK_EVENT_MEDIA_CHANGE : 0;
-}
-
-static const struct block_device_operations ub_bd_fops = {
- .owner = THIS_MODULE,
- .open = ub_bd_unlocked_open,
- .release = ub_bd_release,
- .ioctl = ub_bd_ioctl,
- .check_events = ub_bd_check_events,
- .revalidate_disk = ub_bd_revalidate,
-};
-
-/*
- * Common ->done routine for command