tree a73c650050ec3b84b09a87d349a738113be3c093
parent 62239ac2b301abc397e70986649666cfb7835907
author Akinobu Mita <akinobu.mita@gmail.com> 1184670225 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1184692983 -0700

unregister_blkdev(): do WARN_ON on failure

When unregister_blkdev() has failed, something wrong happened.  This patch
adds WARN_ON to notify of such badness.

Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>