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authorSuzuki K Poulose <suzuki.poulose@arm.com>2019-06-14 18:53:59 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-06-24 05:22:31 +0200
commit418e3ea157efb0eb2c6dd412a8d5f052477c7f5a (patch)
tree1c8412f0b9adce1c72806e3e2c61a84c26752a17
parente6374f6b2e9c9f9a7cf5418157ad7f30f3abd70e (diff)
downloadlinux-stericsson-418e3ea157efb0eb2c6dd412a8d5f052477c7f5a.tar.gz
bus_find_device: Unify the match callback with class_find_device
There is an arbitrary difference between the prototypes of bus_find_device() and class_find_device() preventing their callers from passing the same pair of data and match() arguments to both of them, which is the const qualifier used in the prototype of class_find_device(). If that qualifier is also used in the bus_find_device() prototype, it will be possible to pass the same match() callback function to both bus_find_device() and class_find_device(), which will allow some optimizations to be made in order to avoid code duplication going forward. Also with that, constify the "data" parameter as it is passed as a const to the match function. For this reason, change the prototype of bus_find_device() to match the prototype of class_find_device() and adjust its callers to use the const qualifier in accordance with the new prototype of it. Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Andreas Noever <andreas.noever@gmail.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Corey Minyard <minyard@acm.org> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: David Kershner <david.kershner@unisys.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: David Airlie <airlied@linux.ie> Cc: Felipe Balbi <balbi@kernel.org> Cc: Frank Rowand <frowand.list@gmail.com> Cc: Grygorii Strashko <grygorii.strashko@ti.com> Cc: Harald Freudenberger <freude@linux.ibm.com> Cc: Hartmut Knaack <knaack.h@gmx.de> Cc: Heiko Stuebner <heiko@sntech.de> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Jonathan Cameron <jic23@kernel.org> Cc: "James E.J. Bottomley" <jejb@linux.ibm.com> Cc: Len Brown <lenb@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michael Jamet <michael.jamet@intel.com> Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Cc: Peter Oberparleiter <oberpar@linux.ibm.com> Cc: Sebastian Ott <sebott@linux.ibm.com> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Cc: Yehezkel Bernat <YehezkelShB@gmail.com> Cc: rafael@kernel.org Acked-by: Corey Minyard <minyard@acm.org> Acked-by: David Kershner <david.kershner@unisys.com> Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Acked-by: Wolfram Sang <wsa@the-dreams.de> # for the I2C parts Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--arch/powerpc/platforms/pseries/ibmebus.c4
-rw-r--r--drivers/acpi/acpi_lpss.c4
-rw-r--r--drivers/acpi/sleep.c2
-rw-r--r--drivers/acpi/utils.c4
-rw-r--r--drivers/base/bus.c6
-rw-r--r--drivers/base/devcon.c2
-rw-r--r--drivers/char/ipmi/ipmi_si_platform.c2
-rw-r--r--drivers/firmware/efi/dev-path-parser.c4
-rw-r--r--drivers/gpu/drm/drm_mipi_dsi.c2
-rw-r--r--drivers/hwtracing/coresight/coresight.c6
-rw-r--r--drivers/hwtracing/coresight/of_coresight.c2
-rw-r--r--drivers/hwtracing/intel_th/core.c5
-rw-r--r--drivers/i2c/i2c-core-acpi.c4
-rw-r--r--drivers/i2c/i2c-core-of.c4
-rw-r--r--drivers/iio/inkern.c2
-rw-r--r--drivers/infiniband/hw/hns/hns_roce_hw_v1.c2
-rw-r--r--drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c2
-rw-r--r--drivers/net/ethernet/ti/cpsw-phy-sel.c4
-rw-r--r--drivers/net/ethernet/ti/davinci_emac.c2
-rw-r--r--drivers/net/ethernet/toshiba/tc35815.c4
-rw-r--r--drivers/nvmem/core.c2
-rw-r--r--drivers/of/of_mdio.c2
-rw-r--r--drivers/of/platform.c2
-rw-r--r--drivers/pci/probe.c2
-rw-r--r--drivers/pci/search.c4
-rw-r--r--drivers/s390/cio/css.c4
-rw-r--r--drivers/s390/cio/device.c4
-rw-r--r--drivers/s390/cio/scm.c4
-rw-r--r--drivers/s390/crypto/ap_bus.c8
-rw-r--r--drivers/scsi/scsi_proc.c2
-rw-r--r--drivers/spi/spi.c4
-rw-r--r--drivers/thunderbolt/switch.c4
-rw-r--r--drivers/usb/core/devio.c4
-rw-r--r--drivers/usb/core/usb.c4
-rw-r--r--drivers/usb/phy/phy-am335x-control.c4
-rw-r--r--drivers/usb/phy/phy-isp1301.c4
-rw-r--r--drivers/visorbus/visorbus_main.c4
-rw-r--r--include/linux/device.h4
-rw-r--r--sound/soc/rockchip/rk3399_gru_sound.c2
39 files changed, 67 insertions, 68 deletions
diff --git a/arch/powerpc/platforms/pseries/ibmebus.c b/arch/powerpc/platforms/pseries/ibmebus.c
index 84e8ec4011ba..b91eb0929ed1 100644
--- a/arch/powerpc/platforms/pseries/ibmebus.c
+++ b/arch/powerpc/platforms/pseries/ibmebus.c
@@ -147,13 +147,13 @@ static const struct dma_map_ops ibmebus_dma_ops = {
.unmap_page = ibmebus_unmap_page,
};
-static int ibmebus_match_path(struct device *dev, void *data)
+static int ibmebus_match_path(struct device *dev, const void *data)
{
struct device_node *dn = to_platform_device(dev)->dev.of_node;
return (of_find_node_by_path(data) == dn);
}
-static int ibmebus_match_node(struct device *dev, void *data)
+static int ibmebus_match_node(struct device *dev, const void *data)
{
return to_platform_device(dev)->dev.of_node == data;
}
diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index cf768608437e..dc2ca78748a2 100644
--- a/drivers/acpi/acpi_lpss.c
+++ b/drivers/acpi/acpi_lpss.c
@@ -511,10 +511,10 @@ struct hid_uid {
const char *uid;
};
-static int match_hid_uid(struct device *dev, void *data)
+static int match_hid_uid(struct device *dev, const void *data)
{
struct acpi_device *adev = ACPI_COMPANION(dev);
- struct hid_uid *id = data;
+ const struct hid_uid *id = data;
if (!adev)
return 0;
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index a34deccd7317..fcf4386ecc78 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -454,7 +454,7 @@ static int acpi_pm_prepare(void)
return error;
}
-static int find_powerf_dev(struct device *dev, void *data)
+static int find_powerf_dev(struct device *dev, const void *data)
{
struct acpi_device *device = to_acpi_device(dev);
const char *hid = acpi_device_hid(device);
diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
index 1391b63cadfd..e3974a8f8fd4 100644
--- a/drivers/acpi/utils.c
+++ b/drivers/acpi/utils.c
@@ -730,10 +730,10 @@ struct acpi_dev_match_info {
s64 hrv;
};
-static int acpi_dev_match_cb(struct device *dev, void *data)
+static int acpi_dev_match_cb(struct device *dev, const void *data)
{
struct acpi_device *adev = to_acpi_device(dev);
- struct acpi_dev_match_info *match = data;
+ const struct acpi_dev_match_info *match = data;
unsigned long long hrv;
acpi_status status;
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 0a58e969f8b7..df3cac739813 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -323,8 +323,8 @@ EXPORT_SYMBOL_GPL(bus_for_each_dev);
* return to the caller and not iterate over any more devices.
*/
struct device *bus_find_device(struct bus_type *bus,
- struct device *start, void *data,
- int (*match)(struct device *dev, void *data))
+ struct device *start, const void *data,
+ int (*match)(struct device *dev, const void *data))
{
struct klist_iter i;
struct device *dev;
@@ -342,7 +342,7 @@ struct device *bus_find_device(struct bus_type *bus,
}
EXPORT_SYMBOL_GPL(bus_find_device);
-static int match_name(struct device *dev, void *data)
+static int match_name(struct device *dev, const void *data)
{
const char *name = data;
diff --git a/drivers/base/devcon.c b/drivers/base/devcon.c
index 04db9ae235e4..ac026d5fc672 100644
--- a/drivers/base/devcon.c
+++ b/drivers/base/devcon.c
@@ -107,7 +107,7 @@ static struct bus_type *generic_match_buses[] = {
NULL,
};
-static int device_fwnode_match(struct device *dev, void *fwnode)
+static int device_fwnode_match(struct device *dev, const void *fwnode)
{
return dev_fwnode(dev) == fwnode;
}
diff --git a/drivers/char/ipmi/ipmi_si_platform.c b/drivers/char/ipmi/ipmi_si_platform.c
index f2a91c4d8cab..fd94c4238449 100644
--- a/drivers/char/ipmi/ipmi_si_platform.c
+++ b/drivers/char/ipmi/ipmi_si_platform.c
@@ -426,7 +426,7 @@ static int ipmi_remove(struct platform_device *pdev)
return ipmi_si_remove_by_dev(&pdev->dev);
}
-static int pdev_match_name(struct device *dev, void *data)
+static int pdev_match_name(struct device *dev, const void *data)
{
struct platform_device *pdev = to_platform_device(dev);
const char *name = data;
diff --git a/drivers/firmware/efi/dev-path-parser.c b/drivers/firmware/efi/dev-path-parser.c
index 85ec99f97841..20123384271c 100644
--- a/drivers/firmware/efi/dev-path-parser.c
+++ b/drivers/firmware/efi/dev-path-parser.c
@@ -17,9 +17,9 @@ struct acpi_hid_uid {
char uid[11]; /* UINT_MAX + null byte */
};
-static int __init match_acpi_dev(struct device *dev, void *data)
+static int __init match_acpi_dev(struct device *dev, const void *data)
{
- struct acpi_hid_uid hid_uid = *(struct acpi_hid_uid *)data;
+ struct acpi_hid_uid hid_uid = *(const struct acpi_hid_uid *)data;
struct acpi_device *adev = to_acpi_device(dev);
if (acpi_match_device_ids(adev, hid_uid.hid))
diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
index 80b75501f5c6..ad19df0686c9 100644
--- a/drivers/gpu/drm/drm_mipi_dsi.c
+++ b/drivers/gpu/drm/drm_mipi_dsi.c
@@ -93,7 +93,7 @@ static struct bus_type mipi_dsi_bus_type = {
.pm = &mipi_dsi_device_pm_ops,
};
-static int of_device_match(struct device *dev, void *data)
+static int of_device_match(struct device *dev, const void *data)
{
return dev->of_node == data;
}
diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c
index 4b130281236a..b67ab6a09587 100644
--- a/drivers/hwtracing/coresight/coresight.c
+++ b/drivers/hwtracing/coresight/coresight.c
@@ -498,9 +498,9 @@ struct coresight_device *coresight_get_sink(struct list_head *path)
return csdev;
}
-static int coresight_enabled_sink(struct device *dev, void *data)
+static int coresight_enabled_sink(struct device *dev, const void *data)
{
- bool *reset = data;
+ const bool *reset = data;
struct coresight_device *csdev = to_coresight_device(dev);
if ((csdev->type == CORESIGHT_DEV_TYPE_SINK ||
@@ -544,7 +544,7 @@ struct coresight_device *coresight_get_enabled_sink(bool deactivate)
return dev ? to_coresight_device(dev) : NULL;
}
-static int coresight_sink_by_id(struct device *dev, void *data)
+static int coresight_sink_by_id(struct device *dev, const void *data)
{
struct coresight_device *csdev = to_coresight_device(dev);
unsigned long hash;
diff --git a/drivers/hwtracing/coresight/of_coresight.c b/drivers/hwtracing/coresight/of_coresight.c
index 7045930fc958..3fc200ec1c03 100644
--- a/drivers/hwtracing/coresight/of_coresight.c
+++ b/drivers/hwtracing/coresight/of_coresight.c
@@ -18,7 +18,7 @@
#include <asm/smp_plat.h>
-static int of_dev_node_match(struct device *dev, void *data)
+static int of_dev_node_match(struct device *dev, const void *data)
{
return dev->of_node == data;
}
diff --git a/drivers/hwtracing/intel_th/core.c b/drivers/hwtracing/intel_th/core.c
index 033dce563c99..55922896d862 100644
--- a/drivers/hwtracing/intel_th/core.c
+++ b/drivers/hwtracing/intel_th/core.c
@@ -789,10 +789,9 @@ static int intel_th_populate(struct intel_th *th)
return 0;
}
-static int match_devt(struct device *dev, void *data)
+static int match_devt(struct device *dev, const void *data)
{
- dev_t devt = (dev_t)(unsigned long)data;
-
+ dev_t devt = (dev_t)(unsigned long)(void *)data;
return dev->devt == devt;
}
diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c
index d84095591e45..8af35f114821 100644
--- a/drivers/i2c/i2c-core-acpi.c
+++ b/drivers/i2c/i2c-core-acpi.c
@@ -318,7 +318,7 @@ u32 i2c_acpi_find_bus_speed(struct device *dev)
}
EXPORT_SYMBOL_GPL(i2c_acpi_find_bus_speed);
-static int i2c_acpi_find_match_adapter(struct device *dev, void *data)
+static int i2c_acpi_find_match_adapter(struct device *dev, const void *data)
{
struct i2c_adapter *adapter = i2c_verify_adapter(dev);
@@ -328,7 +328,7 @@ static int i2c_acpi_find_match_adapter(struct device *dev, void *data)
return ACPI_HANDLE(dev) == (acpi_handle)data;
}
-static int i2c_acpi_find_match_device(struct device *dev, void *data)
+static int i2c_acpi_find_match_device(struct device *dev, const void *data)
{
return ACPI_COMPANION(dev) == data;
}
diff --git a/drivers/i2c/i2c-core-of.c b/drivers/i2c/i2c-core-of.c
index 406e5f695a7e..2eb59a260ad4 100644
--- a/drivers/i2c/i2c-core-of.c
+++ b/drivers/i2c/i2c-core-of.c
@@ -112,12 +112,12 @@ void of_i2c_register_devices(struct i2c_adapter *adap)
of_node_put(bus);
}
-static int of_dev_node_match(struct device *dev, void *data)
+static int of_dev_node_match(struct device *dev, const void *data)
{
return dev->of_node == data;
}
-static int of_dev_or_parent_node_match(struct device *dev, void *data)
+static int of_dev_or_parent_node_match(struct device *dev, const void *data)
{
if (dev->of_node == data)
return 1;
diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c
index 4a5eff3f18bc..c46fb59d92cb 100644
--- a/drivers/iio/inkern.c
+++ b/drivers/iio/inkern.c
@@ -93,7 +93,7 @@ static const struct iio_chan_spec
#ifdef CONFIG_OF
-static int iio_dev_node_match(struct device *dev, void *data)
+static int iio_dev_node_match(struct device *dev, const void *data)
{
return dev->of_node == data && dev->type == &iio_device_type;
}
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
index 4c5d0f160c10..fd90b05849c8 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
@@ -4497,7 +4497,7 @@ static const struct acpi_device_id hns_roce_acpi_match[] = {
};
MODULE_DEVICE_TABLE(acpi, hns_roce_acpi_match);
-static int hns_roce_node_match(struct device *dev, void *fwnode)
+static int hns_roce_node_match(struct device *dev, const void *fwnode)
{
return dev->fwnode == fwnode;
}
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c
index 09c16d88172e..bb6586d0e5af 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c
@@ -754,7 +754,7 @@ struct dsaf_misc_op *hns_misc_op_get(struct dsaf_device *dsaf_dev)
return (void *)misc_op;
}
-static int hns_dsaf_dev_match(struct device *dev, void *fwnode)
+static int hns_dsaf_dev_match(struct device *dev, const void *fwnode)
{
return dev->fwnode == fwnode;
}
diff --git a/drivers/net/ethernet/ti/cpsw-phy-sel.c b/drivers/net/ethernet/ti/cpsw-phy-sel.c
index 48e0924259f5..4e184eecc8e1 100644
--- a/drivers/net/ethernet/ti/cpsw-phy-sel.c
+++ b/drivers/net/ethernet/ti/cpsw-phy-sel.c
@@ -151,9 +151,9 @@ static void cpsw_gmii_sel_dra7xx(struct cpsw_phy_sel_priv *priv,
}
static struct platform_driver cpsw_phy_sel_driver;
-static int match(struct device *dev, void *data)
+static int match(struct device *dev, const void *data)
{
- struct device_node *node = (struct device_node *)data;
+ const struct device_node *node = (const struct device_node *)data;
return dev->of_node == node &&
dev->driver == &cpsw_phy_sel_driver.driver;
}
diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c
index 4bf65cab79e6..57d131a04db3 100644
--- a/drivers/net/ethernet/ti/davinci_emac.c
+++ b/drivers/net/ethernet/ti/davinci_emac.c
@@ -1371,7 +1371,7 @@ static int emac_devioctl(struct net_device *ndev, struct ifreq *ifrq, int cmd)
return -EOPNOTSUPP;
}
-static int match_first_device(struct device *dev, void *data)
+static int match_first_device(struct device *dev, const void *data)
{
if (dev->parent && dev->parent->of_node)
return of_device_is_compatible(dev->parent->of_node,
diff --git a/drivers/net/ethernet/toshiba/tc35815.c b/drivers/net/ethernet/toshiba/tc35815.c
index c50a9772f4af..8479a440527b 100644
--- a/drivers/net/ethernet/toshiba/tc35815.c
+++ b/drivers/net/ethernet/toshiba/tc35815.c
@@ -694,10 +694,10 @@ err_out:
* should provide a "tc35815-mac" device with a MAC address in its
* platform_data.
*/
-static int tc35815_mac_match(struct device *dev, void *data)
+static int tc35815_mac_match(struct device *dev, const void *data)
{
struct platform_device *plat_dev = to_platform_device(dev);
- struct pci_dev *pci_dev = data;
+ const struct pci_dev *pci_dev = data;
unsigned int id = pci_dev->irq;
return !strcmp(plat_dev->name, "tc35815-mac") && plat_dev->id == id;
}
diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index c7892c3da91f..ac5d945be88a 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -76,7 +76,7 @@ static struct bus_type nvmem_bus_type = {
.name = "nvmem",
};
-static int of_nvmem_match(struct device *dev, void *nvmem_np)
+static int of_nvmem_match(struct device *dev, const void *nvmem_np)
{
return dev->of_node == nvmem_np;
}
diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c
index de6157357e26..dfe12948c834 100644
--- a/drivers/of/of_mdio.c
+++ b/drivers/of/of_mdio.c
@@ -282,7 +282,7 @@ unregister:
EXPORT_SYMBOL(of_mdiobus_register);
/* Helper function for of_phy_find_device */
-static int of_phy_match(struct device *dev, void *phy_np)
+static int of_phy_match(struct device *dev, const void *phy_np)
{
return dev->of_node == phy_np;
}
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index 04ad312fd85b..008d79e33c2d 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -37,7 +37,7 @@ static const struct of_device_id of_skipped_node_table[] = {
{} /* Empty terminated list */
};
-static int of_dev_node_match(struct device *dev, void *data)
+static int of_dev_node_match(struct device *dev, const void *data)
{
return dev->of_node == data;
}
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 0e8e2c186f50..f9ef7ad3f75d 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -64,7 +64,7 @@ static struct resource *get_pci_domain_busn_res(int domain_nr)
return &r->res;
}
-static int find_anything(struct device *dev, void *data)
+static int find_anything(struct device *dev, const void *data)
{
return 1;
}
diff --git a/drivers/pci/search.c b/drivers/pci/search.c
index 5c7922612733..7f4e65872b8d 100644
--- a/drivers/pci/search.c
+++ b/drivers/pci/search.c
@@ -236,10 +236,10 @@ struct pci_dev *pci_get_domain_bus_and_slot(int domain, unsigned int bus,
}
EXPORT_SYMBOL(pci_get_domain_bus_and_slot);
-static int match_pci_dev_by_id(struct device *dev, void *data)
+static int match_pci_dev_by_id(struct device *dev, const void *data)
{
struct pci_dev *pdev = to_pci_dev(dev);
- struct pci_device_id *id = data;
+ const struct pci_device_id *id = data;
if (pci_match_one_device(id, pdev))
return 1;
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index aea502922646..a2c97830efe0 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -434,10 +434,10 @@ static int css_probe_device(struct subchannel_id schid, struct schib *schib)
}
static int
-check_subchannel(struct device * dev, void * data)
+check_subchannel(struct device *dev, const void *data)
{
struct subchannel *sch;
- struct subchannel_id *schid = data;
+ struct subchannel_id *schid = (void *)data;
sch = to_subchannel(dev);
return schid_equal(&sch->schid, schid);
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 1540229a37bb..d32f373e5bc7 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -642,10 +642,10 @@ static int ccw_device_add(struct ccw_device *cdev)
return device_add(dev);
}
-static int match_dev_id(struct device *dev, void *data)
+static int match_dev_id(struct device *dev, const void *data)
{
struct ccw_device *cdev = to_ccwdev(dev);
- struct ccw_dev_id *dev_id = data;
+ struct ccw_dev_id *dev_id = (void *)data;
return ccw_dev_id_is_equal(&cdev->private->dev_id, dev_id);
}
diff --git a/drivers/s390/cio/scm.c b/drivers/s390/cio/scm.c
index 6bca1d5455d4..9f26d4310bb3 100644
--- a/drivers/s390/cio/scm.c
+++ b/drivers/s390/cio/scm.c
@@ -174,10 +174,10 @@ out:
kobject_uevent(&scmdev->dev.kobj, KOBJ_CHANGE);
}
-static int check_address(struct device *dev, void *data)
+static int check_address(struct device *dev, const void *data)
{
struct scm_device *scmdev = to_scm_dev(dev);
- struct sale *sale = data;
+ const struct sale *sale = data;
return scmdev->address == sale->sa;
}
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index b9fc502c58c2..b7902b643ec8 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -1356,16 +1356,16 @@ static int ap_get_compatible_type(ap_qid_t qid, int rawtype, unsigned int func)
* Helper function to be used with bus_find_dev
* matches for the card device with the given id
*/
-static int __match_card_device_with_id(struct device *dev, void *data)
+static int __match_card_device_with_id(struct device *dev, const void *data)
{
- return is_card_dev(dev) && to_ap_card(dev)->id == (int)(long) data;
+ return is_card_dev(dev) && to_ap_card(dev)->id == (int)(long)(void *) data;
}
/*
* Helper function to be used with bus_find_dev
* matches for the queue device with a given qid
*/
-static int __match_queue_device_with_qid(struct device *dev, void *data)
+static int __match_queue_device_with_qid(struct device *dev, const void *data)
{
return is_queue_dev(dev) && to_ap_queue(dev)->qid == (int)(long) data;
}
@@ -1374,7 +1374,7 @@ static int __match_queue_device_with_qid(struct device *dev, void *data)
* Helper function to be used with bus_find_dev
* matches any queue device with given queue id
*/
-static int __match_queue_device_with_queue_id(struct device *dev, void *data)
+static int __match_queue_device_with_queue_id(struct device *dev, const void *data)
{
return is_queue_dev(dev)
&& AP_QID_QUEUE(to_ap_queue(dev)->qid) == (int)(long) data;
diff --git a/drivers/scsi/scsi_proc.c b/drivers/scsi/scsi_proc.c
index 7f0ceb65c3f3..c074631086a4 100644
--- a/drivers/scsi/scsi_proc.c
+++ b/drivers/scsi/scsi_proc.c
@@ -372,7 +372,7 @@ static ssize_t proc_scsi_write(struct file *file, const char __user *buf,
return err;
}
-static int always_match(struct device *dev, void *data)
+static int always_match(struct device *dev, const void *data)
{
return 1;
}
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 5e75944ad5d1..3da1121f7572 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -3538,7 +3538,7 @@ EXPORT_SYMBOL_GPL(spi_write_then_read);
/*-------------------------------------------------------------------------*/
#if IS_ENABLED(CONFIG_OF)
-static int __spi_of_device_match(struct device *dev, void *data)
+static int __spi_of_device_match(struct device *dev, const void *data)
{
return dev->of_node == data;
}
@@ -3639,7 +3639,7 @@ static int spi_acpi_controller_match(struct device *dev, const void *data)
return ACPI_COMPANION(dev->parent) == data;
}
-static int spi_acpi_device_match(struct device *dev, void *data)
+static int spi_acpi_device_match(struct device *dev, const void *data)
{
return ACPI_COMPANION(dev) == data;
}
diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c
index c1b016574fb4..c9a7e4a779cd 100644
--- a/drivers/thunderbolt/switch.c
+++ b/drivers/thunderbolt/switch.c
@@ -1946,10 +1946,10 @@ struct tb_sw_lookup {
u64 route;
};
-static int tb_switch_match(struct device *dev, void *data)
+static int tb_switch_match(struct device *dev, const void *data)
{
struct tb_switch *sw = tb_to_switch(dev);
- struct tb_sw_lookup *lookup = data;
+ const struct tb_sw_lookup *lookup = data;
if (!sw)
return 0;
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index fa783531ee88..7bd7de7273a3 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -947,9 +947,9 @@ error:
return ret;
}
-static int match_devt(struct device *dev, void *data)
+static int match_devt(struct device *dev, const void *data)
{
- return dev->devt == (dev_t) (unsigned long) data;
+ return dev->devt == (dev_t)(unsigned long)(void *)data;
}
static struct usb_device *usbdev_lookup_by_devt(dev_t devt)
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 7fcb9f782931..1678e305e037 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -325,9 +325,9 @@ struct find_interface_arg {
struct device_driver *drv;
};
-static int __find_interface(struct device *dev, void *data)
+static int __find_interface(struct device *dev, const void *data)
{
- struct find_interface_arg *arg = data;
+ const struct find_interface_arg *arg = data;
struct usb_interface *intf;
if (!is_usb_interface(dev))
diff --git a/drivers/usb/phy/phy-am335x-control.c b/drivers/usb/phy/phy-am335x-control.c
index a3cb25cb74f8..d16dfc320faa 100644
--- a/drivers/usb/phy/phy-am335x-control.c
+++ b/drivers/usb/phy/phy-am335x-control.c
@@ -118,9 +118,9 @@ static const struct of_device_id omap_control_usb_id_table[] = {
MODULE_DEVICE_TABLE(of, omap_control_usb_id_table);
static struct platform_driver am335x_control_driver;
-static int match(struct device *dev, void *data)
+static int match(struct device *dev, const void *data)
{
- struct device_node *node = (struct device_node *)data;
+ const struct device_node *node = (const struct device_node *)data;
return dev->of_node == node &&
dev->driver == &am335x_control_driver.driver;
}
diff --git a/drivers/usb/phy/phy-isp1301.c b/drivers/usb/phy/phy-isp1301.c
index 93b7d6a30aad..6cf6fbd39237 100644
--- a/drivers/usb/phy/phy-isp1301.c
+++ b/drivers/usb/phy/phy-isp1301.c
@@ -142,9 +142,9 @@ static struct i2c_driver isp1301_driver = {
module_i2c_driver(isp1301_driver);
-static int match(struct device *dev, void *data)
+static int match(struct device *dev, const void *data)
{
- struct device_node *node = (struct device_node *)data;
+ const struct device_node *node = (const struct device_node *)data;
return (dev->of_node == node) &&
(dev->driver == &isp1301_driver.driver);
}
diff --git a/drivers/visorbus/visorbus_main.c b/drivers/visorbus/visorbus_main.c
index 0b2434cc4ecd..152fd29f04f2 100644
--- a/drivers/visorbus/visorbus_main.c
+++ b/drivers/visorbus/visorbus_main.c
@@ -171,10 +171,10 @@ struct visor_busdev {
u32 dev_no;
};
-static int match_visorbus_dev_by_id(struct device *dev, void *data)
+static int match_visorbus_dev_by_id(struct device *dev, const void *data)
{
struct visor_device *vdev = to_visor_device(dev);
- struct visor_busdev *id = data;
+ const struct visor_busdev *id = data;
if (vdev->chipset_bus_no == id->bus_no &&
vdev->chipset_dev_no == id->dev_no)
diff --git a/include/linux/device.h b/include/linux/device.h
index e85264fb6616..cbbdcadc660e 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -166,8 +166,8 @@ void subsys_dev_iter_exit(struct subsys_dev_iter *iter);
int bus_for_each_dev(struct bus_type *bus, struct device *start, void *data,
int (*fn)(struct device *dev, void *data));
struct device *bus_find_device(struct bus_type *bus, struct device *start,
- void *data,
- int (*match)(struct device *dev, void *data));
+ const void *data,
+ int (*match)(struct device *dev, const void *data));
struct device *bus_find_device_by_name(struct bus_type *bus,
struct device *start,
const char *name);
diff --git a/sound/soc/rockchip/rk3399_gru_sound.c b/sound/soc/rockchip/rk3399_gru_sound.c
index 3d0cc6e90d7b..c04c9ed185b7 100644
--- a/sound/soc/rockchip/rk3399_gru_sound.c
+++ b/sound/soc/rockchip/rk3399_gru_sound.c
@@ -405,7 +405,7 @@ static const struct dailink_match_data dailink_match[] = {
},
};
-static int of_dev_node_match(struct device *dev, void *data)
+static int of_dev_node_match(struct device *dev, const void *data)
{
return dev->of_node == data;
}