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bus_remove_device: be more careful about incomplete initialization

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Prevent bus_remove_device() from crashing if dev->knode_bus has not been
initialized before it's called.

This can happen if the device_add() ended up breaking out early due to
an error, for example.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Rafael J. Wysocki 2008-04-22 22:57:50 +02:00 committed by Linus Torvalds
parent 08119e8966
commit 29591b92e1
1 changed files with 2 additions and 1 deletions
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3
drivers/base/bus.c
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@ -530,7 +530,8 @@ void bus_remove_device(struct device *dev)
sysfs_remove_link(&dev->bus->p->devices_kset->kobj,
dev->bus_id);
device_remove_attrs(dev->bus, dev);
klist_del(&dev->knode_bus);
if (klist_node_attached(&dev->knode_bus))
klist_del(&dev->knode_bus);
pr_debug("bus: '%s': remove device %s\n",
dev->bus->name, dev->bus_id);