| From stable-bounces@linux.kernel.org Sat Sep 16 21:04:05 2006 |
| Message-ID: <450CC8D6.7030100@gentoo.org> |
| Date: Sun, 17 Sep 2006 00:02:30 -0400 |
| From: Linus Torvalds <torvalds@osdl.org> |
| To: stable@kernel.org |
| Cc: torvalds@g5.osdl.org |
| Subject: Add PIIX4 APCI quirk for the 440MX chipset too |
| |
| From: Linus Torvalds <torvalds@osdl.org> |
| |
| 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> |
| |
| --- |
| drivers/pci/quirks.c | 1 + |
| 1 file changed, 1 insertion(+) |
| |
| --- linux-2.6.17.13.orig/drivers/pci/quirks.c |
| +++ linux-2.6.17.13/drivers/pci/quirks.c |
| @@ -390,6 +390,7 @@ static void __devinit quirk_piix4_acpi(s |
| piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20); |
| } |
| DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi ); |
| +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi ); |
| |
| /* |
| * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at |