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authorGreg Kroah-Hartman <gregkh@suse.de>2008-03-12 21:48:03 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2008-03-13 10:21:09 -0700
commitcc74d96f47b0d916840f92092595e3be9731e047 (patch)
tree0fa90374b3c0620a2028e7aa7ec28e40c4283039 /drivers/pci
parent93d74463d018ddf05c169ad399e62e90e0f82fc0 (diff)
downloadop-kernel-dev-cc74d96f47b0d916840f92092595e3be9731e047.zip
op-kernel-dev-cc74d96f47b0d916840f92092595e3be9731e047.tar.gz
PCI: fix issue with busses registering multiple times in sysfs
PCI busses can be registered multiple times, so we need to detect if we have registered our bus structure in sysfs already. If so, don't do it again. Thanks to Guennadi Liakhovetski <g.liakhovetski@gmx.de> for reporting the problem, and to Linus for poking me to get me to believe that it was a real problem. Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/bus.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
index 6a9403d..d708358 100644
--- a/drivers/pci/bus.c
+++ b/drivers/pci/bus.c
@@ -143,14 +143,18 @@ void pci_bus_add_devices(struct pci_bus *bus)
/* register the bus with sysfs as the parent is now
* properly registered. */
child_bus = dev->subordinate;
+ if (child_bus->is_added)
+ continue;
child_bus->dev.parent = child_bus->bridge;
retval = device_register(&child_bus->dev);
if (retval)
dev_err(&dev->dev, "Error registering pci_bus,"
" continuing...\n");
- else
+ else {
+ child_bus->is_added = 1;
retval = device_create_file(&child_bus->dev,
&dev_attr_cpuaffinity);
+ }
if (retval)
dev_err(&dev->dev, "Error creating cpuaffinity"
" file, continuing...\n");
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