The patch titled
powerpc: fix pci domain detection
has been added to the -mm tree. Its filename is
powerpc-fix-pci-domain-detection.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: powerpc: fix pci domain detection
From: Arnd Bergmann <arnd@xxxxxxxx>
The /proc/bus/pci/* files list PCI domain numbers only for devices that
claim to be on a multi-domain system. The check for this is broken on
powerpc, because the buid value is truncated to 32 bits.
There is at least one machine (IBM QS21) that only uses the high-order bits
of the buid, so the return value of pci_proc_domain() ends up being always
zero, which makes /proc/bus/pci useless.
Change the logic to always return '1' for a nonzero buid value.
Signed-off-by: Arnd Bergmann <arnd.bergmann@xxxxxxxxxx>
Acked-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
diff -puN arch/powerpc/kernel/pci_64.c~powerpc-fix-pci-domain-detection arch/powerpc/kernel/pci_64.c
--- a/arch/powerpc/kernel/pci_64.c~powerpc-fix-pci-domain-detection
+++ a/arch/powerpc/kernel/pci_64.c
@@ -588,7 +588,7 @@ int pci_proc_domain(struct pci_bus *bus)
return 0;
else {
struct pci_controller *hose = pci_bus_to_host(bus);
- return hose->buid;
+ return hose->buid != 0;
}
}
_
Patches currently in -mm which might be from arnd@xxxxxxxx are
powerpc-fix-pci-domain-detection.patch
whitespace-fixes-compat-syscalls.patch
-
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