Commit 294462a5 authored Jul 17, 2007 by Akinobu Mita Committed by Linus Torvalds Jul 17, 2007

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>

parent 62239ac2

block/genhd.c

+3 −2

Original line number	Diff line number	Diff line
		@@ -120,9 +120,10 @@ int unregister_blkdev(unsigned int major, const char *name)
		for (n = &major_names[index]; n; n = &(n)->next)
		if ((*n)->major == major)
		break;
		if (!n \|\| strcmp((n)->name, name))
		if (!n \|\| strcmp((n)->name, name)) {
		WARN_ON(1);
		ret = -EINVAL;
		else {
		} else {
		p = *n;
		*n = p->next;
		}