Messages in this thread Patch in this message | | | Date | Mon, 07 Feb 2011 14:01:44 -0800 | From | Yinghai Lu <> | Subject | [PATCH] x86, pci: early dump skip device the same way as later probe code |
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Use VENDOR_ID instead of CLASS_REVISION.
Do have one system with 0x00ffffff CLASS_REVSION
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
--- arch/x86/pci/early.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-)
Index: linux-2.6/arch/x86/pci/early.c =================================================================== --- linux-2.6.orig/arch/x86/pci/early.c +++ linux-2.6/arch/x86/pci/early.c @@ -88,12 +88,17 @@ void early_dump_pci_devices(void) for (bus = 0; bus < 256; bus++) { for (slot = 0; slot < 32; slot++) { for (func = 0; func < 8; func++) { - u32 class; + u32 l; u8 type; - class = read_pci_config(bus, slot, func, - PCI_CLASS_REVISION); - if (class == 0xffffffff) + l = read_pci_config(bus, slot, func, + PCI_VENDOR_ID); + /* + * some broken boards return 0 or ~0 if a slot + * is empty + */ + if (l == 0xffffffff || l == 0x00000000 || + l == 0x0000ffff || l == 0xffff0000) continue; early_dump_pci_device(bus, slot, func);
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