This was applied to (2.6.20-bound) ACPICA, and I've cherry-picked it to apply to 2.6.19, and will send it to stable as well. thanks, -Len On Tuesday 10 October 2006 17:20, akpm@xxxxxxxx wrote: > From: <eiichiro.oiwa.nm@xxxxxxxxxxx> > > Lifted from http://bugzilla.kernel.org/show_bug.cgi?id=7145 > > PCI Bus Topology: > > [CPU] [CPU] [CPU] [CPU] > | |BUS | | BUS > --+--+---+--- --+--+--+------ > | | > [Root Bridge]*1-----[Root Bridge]*1 > | | \ \ > [Bridge] | [PCI-e slot] [PCI-e slot] > | | [PCI-e slot] > | \ > | [PCI-e slot] > | > | > [PCI Bridge] > | \ > | [PCI-X slot] > | > [PCI-X slot] > > *1: PCI Express Root Bridge. > > I could not get correct PCI Express BUS number from the structure of > acpi_object_extra. I always get zero as BUS number regardless of BUS > location. I found that there is incorrect comparison with _HID (PNP0A08) > in acpi/events/evrgnini.c and PCI Express _BBN method always fail. > Therefore, we get always get zero as PCI Express bus number. > > I suggest the following patch. > > Cc: "Brown, Len" <len.brown@xxxxxxxxx> > Cc: <linux-acpi@xxxxxxxxxxxxxxx> > Signed-off-by: Andrew Morton <akpm@xxxxxxxx> > --- > > drivers/acpi/events/evrgnini.c | 4 ++-- > 1 files changed, 2 insertions(+), 2 deletions(-) > > diff -puN drivers/acpi/events/evrgnini.c~fix-incorrect-handling-of-pci-express-root-bridge-_hid drivers/acpi/events/evrgnini.c > --- a/drivers/acpi/events/evrgnini.c~fix-incorrect-handling-of-pci-express-root-bridge-_hid > +++ a/drivers/acpi/events/evrgnini.c > @@ -225,12 +225,12 @@ acpi_ev_pci_config_region_setup(acpi_han > if (! > (ACPI_STRNCMP > (object_hID.value, PCI_ROOT_HID_STRING, > - sizeof(PCI_ROOT_HID_STRING)) > + sizeof(PCI_ROOT_HID_STRING))) > || > !(ACPI_STRNCMP > (object_hID.value, > PCI_EXPRESS_ROOT_HID_STRING, > - sizeof(PCI_EXPRESS_ROOT_HID_STRING))))) > + sizeof(PCI_EXPRESS_ROOT_HID_STRING)))) > { > > /* Install a handler for this PCI root bridge */ > _ > - > To unsubscribe from this list: send the line "unsubscribe linux-acpi" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
