diff options
| author | David Woodhouse <David.Woodhouse@intel.com> | 2008-10-20 20:16:53 +0100 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2008-10-20 20:19:36 +0100 |
| commit | b364776ad1208a71f0c53578c84619a395412a8d (patch) | |
| tree | d6050e5db6298095324ccb8af7d477684485d52e /drivers/pci/quirks.c | |
| parent | 6da0b38f4433fb0f24615449d7966471b6e5eae0 (diff) | |
| parent | 6c8909b42fee1be67647bcd2518161a0fa8ca533 (diff) | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
drivers/pci/intel-iommu.c
Diffstat (limited to 'drivers/pci/quirks.c')
| -rw-r--r-- | drivers/pci/quirks.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index e872ac925b4..832175d9ca2 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -35,6 +35,20 @@ static void __devinit quirk_mellanox_tavor(struct pci_dev *dev) DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR,quirk_mellanox_tavor); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE,quirk_mellanox_tavor); +/* Many VIA bridges seem to corrupt data for DAC. Disable it here */ +int forbid_dac __read_mostly; +EXPORT_SYMBOL(forbid_dac); + +static __devinit void via_no_dac(struct pci_dev *dev) +{ + if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI && forbid_dac == 0) { + dev_info(&dev->dev, + "VIA PCI bridge detected. Disabling DAC.\n"); + forbid_dac = 1; + } +} +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_ANY_ID, via_no_dac); + /* Deal with broken BIOS'es that neglect to enable passive release, which can cause problems in combination with the 82441FX/PPro MTRRs */ static void quirk_passive_release(struct pci_dev *dev) |