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authorLinus Torvalds <torvalds@osdl.org>2006-09-17 00:02:30 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2006-10-13 11:50:11 -0700
commit144bfae25349b7c4be0c6ee82bcb7c3d05990fa8 (patch)
parent8d73f56f5f020bf99be61a6f4ba50be72c97dd0c (diff)
Add PIIX4 APCI quirk for the 440MX chipset too
This is confirmed to fix a hang due to PCI resource conflicts with setting up the Cardbus bridge on old laptops with the 440MX chipsets. Original report by Alessio Sangalli, lspci debugging help by Pekka Enberg, and trial patch suggested by Daniel Ritz: "From the docs available i would _guess_ this thing is really similar to the 82443BX/82371AB combination. at least the SMBus base address register is hidden at the very same place (32bit at 0x90 in function 3 of the "south" brigde)" The dang thing is largely undocumented, but the patch was corroborated by Asit Mallick: "I am trying to find the register information. 440MX is an integration of 440BX north-bridge without AGP and PIIX4E (82371EB). PIIX4 quirk should cover the ACPI and SMBus related I/O registers." and verified to fix the problem by Alessio. Cc: Daniel Ritz <daniel.ritz-ml@swissonline.ch> Cc: Asit Mallick <asit.k.mallick@intel.com> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Dmitry Torokhov <dtor_core@ameritech.net> Tested-by: Alessio Sangalli <alesan@manoweb.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 6e3786f4db17..c19ffa6b35d1 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -390,6 +390,7 @@ static void __devinit quirk_piix4_acpi(struct pci_dev *dev)
piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20);
* ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at