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authorArnd Bergmann <arnd@arndb.de>2007-09-27 00:02:05 +1000
committerPaul Mackerras <paulus@samba.org>2007-10-03 11:48:44 +1000
commit3eb523b939d59fd90518188750c26df5d357478f (patch)
tree8cf71ddfd32f184b5686f118d1e4ea22a5ba3565 /arch
parentfabca2c0a461bd82a35194e3a4bb1e98f3ffa789 (diff)
downloadop-kernel-dev-3eb523b939d59fd90518188750c26df5d357478f.zip
op-kernel-dev-3eb523b939d59fd90518188750c26df5d357478f.tar.gz
[POWERPC] Fix pci domain detection
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@de.ibm.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/kernel/pci_64.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 291ffbc..9f63bdc 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/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;
}
}
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