tree 0cdea5ea29cc1cee3ec2f03baf7afc3d6a4d45be
parent 4ccb457966391295bd9b3644f6bdc9ddd97b6051
author Greg Kroah-Hartman <gregkh@suse.de> 1239836412 -0700
committer Greg Kroah-Hartman <gregkh@suse.de> 1239923831 -0700

driver core: prevent device_for_each_child from oopsing

David Vrabel noticed that the wireless usb stack likes to call
device_for_each_chile() with an empty bus.  This used to work fine, but
now oopses.  This patch fixes the oops and makes the code behave like it
used to.

Reported-by: David Vrabel <david.vrabel@csr.com>
Tested-by: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>