diff options
| -rw-r--r-- | payloads/coreinfo/pci_module.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/payloads/coreinfo/pci_module.c b/payloads/coreinfo/pci_module.c index f79d543d5e..9f10b12703 100644 --- a/payloads/coreinfo/pci_module.c +++ b/payloads/coreinfo/pci_module.c @@ -183,8 +183,14 @@ static void pci_scan_bus(int bus) /* Nobody home. */ if (val == 0xffffffff || val == 0x00000000 || - val == 0x0000ffff || val == 0xffff0000) + val == 0x0000ffff || val == 0xffff0000) { + + /* If function 0 is not present, no need + * to test other functions. */ + if (func == 0) + func = 8; continue; + } /* FIXME: Remove this arbitrary limitation. */ if (devices_index >= MAX_PCI_DEVICES) @@ -197,7 +203,11 @@ static void pci_scan_bus(int bus) /* If this is a bridge, then follow it. */ hdr = pci_read_config8(dev, REG_HEADER_TYPE); - hdr &= 0x7f; + + if ((func == 0) && !(hdr & HEADER_TYPE_MULTIFUNCTION)) + func = 8; + + hdr &= ~HEADER_TYPE_MULTIFUNCTION; if (hdr == HEADER_TYPE_BRIDGE || hdr == HEADER_TYPE_CARDBUS) { unsigned int busses; |