diff options
Diffstat (limited to 'drivers/pci/quirks.c')
| -rw-r--r-- | drivers/pci/quirks.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 1d5efdfc4..8d0d245b3 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -223,6 +223,18 @@ static void __init quirk_piix3usb(struct pci_dev *dev) } /* + * VIA VT82C598 has its device ID settable and many BIOSes + * set it to the ID of VT82C597 for backward compatibility. + * We need to switch it off to be able to recognize the real + * type of the chip. + */ +static void __init quirk_vt82c598_id(struct pci_dev *dev) +{ + pci_write_config_byte(dev, 0xfc, 0); + pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device); +} + +/* * The main table of quirks. */ @@ -232,7 +244,6 @@ static struct pci_fixup pci_fixups[] __initdata = { /* * Its not totally clear which chipsets are the problematic ones * We know 82C586 and 82C596 variants are affected. - * */ { PCI_FIXUP_FINAL, PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_isa_dma_hangs }, { PCI_FIXUP_FINAL, PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596, quirk_isa_dma_hangs }, @@ -251,6 +262,7 @@ static struct pci_fixup pci_fixups[] __initdata = { { PCI_FIXUP_FINAL, PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma }, { PCI_FIXUP_FINAL, PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci }, { PCI_FIXUP_FINAL, PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci }, + { PCI_FIXUP_HEADER, PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id }, { PCI_FIXUP_HEADER, PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi }, { PCI_FIXUP_HEADER, PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi }, { PCI_FIXUP_HEADER, PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi }, |