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Diffstat (limited to 'drivers/pci/setup-res.c')
| -rw-r--r-- | drivers/pci/setup-res.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c index 99c9e32775ee..045427336e11 100644 --- a/drivers/pci/setup-res.c +++ b/drivers/pci/setup-res.c @@ -72,6 +72,12 @@ static void pci_std_update_resource(struct pci_dev *dev, int resno) if (resno < PCI_ROM_RESOURCE) { reg = PCI_BASE_ADDRESS_0 + 4 * resno; } else if (resno == PCI_ROM_RESOURCE) { + + /* + * Apparently some Matrox devices have ROM BARs that read + * as zero when disabled, so don't update ROM BARs unless + * they're enabled. See https://lkml.org/lkml/2005/8/30/138. + */ if (!(res->flags & IORESOURCE_ROM_ENABLE)) return; |