diff options
Diffstat (limited to 'arch/x86/pci/common.c')
| -rw-r--r-- | arch/x86/pci/common.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c index 215a27ae050..a0772af64ef 100644 --- a/arch/x86/pci/common.c +++ b/arch/x86/pci/common.c @@ -125,6 +125,23 @@ void __init dmi_check_skip_isa_align(void) static void __devinit pcibios_fixup_device_resources(struct pci_dev *dev) { struct resource *rom_r = &dev->resource[PCI_ROM_RESOURCE]; + struct resource *bar_r; + int bar; + + if (pci_probe & PCI_NOASSIGN_BARS) { + /* + * If the BIOS did not assign the BAR, zero out the + * resource so the kernel doesn't attmept to assign + * it later on in pci_assign_unassigned_resources + */ + for (bar = 0; bar <= PCI_STD_RESOURCE_END; bar++) { + bar_r = &dev->resource[bar]; + if (bar_r->start == 0 && bar_r->end != 0) { + bar_r->flags = 0; + bar_r->end = 0; + } + } + } if (pci_probe & PCI_NOASSIGN_ROMS) { if (rom_r->parent) @@ -509,6 +526,9 @@ char * __devinit pcibios_setup(char *str) } else if (!strcmp(str, "norom")) { pci_probe |= PCI_NOASSIGN_ROMS; return NULL; + } else if (!strcmp(str, "nobar")) { + pci_probe |= PCI_NOASSIGN_BARS; + return NULL; } else if (!strcmp(str, "assign-busses")) { pci_probe |= PCI_ASSIGN_ALL_BUSSES; return NULL; |