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authorCarl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>2006-05-15 09:44:33 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-05-15 11:20:57 -0700
commitce007ea59729d627f62bb5fa8c1a81e25653a0ad (patch)
treec09308c9da8b75462510fce1719ce4a29143964a
parenteee391a66d774e644bf3cbb35403562e09d88bb2 (diff)
downloadlinux-ce007ea59729d627f62bb5fa8c1a81e25653a0ad.tar.gz
[PATCH] smbus unhiding kills thermal management
Do not enable the SMBus device on Asus boards if suspend is used. We do not reenable the device on resume, leading to all sorts of undesirable effects, the worst being a total fan failure after resume on Samsung P35 laptop. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Signed-off-by: Pavel Machek <pavel@suse.cz> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--drivers/pci/quirks.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 0d36d504088..d378478612f 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -902,6 +902,7 @@ static void __init k8t_sound_hostbridge(struct pci_dev *dev)
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, k8t_sound_hostbridge);
+#ifndef CONFIG_ACPI_SLEEP
/*
* On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge
* is not activated. The myth is that Asus said that they do not want the
@@ -913,8 +914,12 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, k8t_sound_ho
* bridge. Unfortunately, this device has no subvendor/subdevice ID. So it
* becomes necessary to do this tweak in two steps -- I've chosen the Host
* bridge as trigger.
+ *
+ * Actually, leaving it unhidden and not redoing the quirk over suspend2ram
+ * will cause thermal management to break down, and causing machine to
+ * overheat.
*/
-static int __initdata asus_hides_smbus = 0;
+static int __initdata asus_hides_smbus;
static void __init asus_hides_smbus_hostbridge(struct pci_dev *dev)
{
@@ -1057,6 +1062,8 @@ static void __init asus_hides_smbus_lpc_ich6(struct pci_dev *dev)
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6 );
+#endif
+
/*
* SiS 96x south bridge: BIOS typically hides SMBus device...
*/