diff options
Diffstat (limited to 'drivers/pci/rom.c')
| -rw-r--r-- | drivers/pci/rom.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c index f5ee7ce16fa6..e1dcefc69bb4 100644 --- a/drivers/pci/rom.c +++ b/drivers/pci/rom.c @@ -71,7 +71,11 @@ void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size) void __iomem *image; int last_image; - /* IORESOURCE_ROM_SHADOW only set on x86 */ + /* + * IORESOURCE_ROM_SHADOW set on x86, x86_64 and IA64 supports legacy + * memory map if the VGA enable bit of the Bridge Control register is + * set for embedded VGA. + */ if (res->flags & IORESOURCE_ROM_SHADOW) { /* primary video rom always starts here */ start = (loff_t)0xC0000; |