Commit 294462a5 authored by Akinobu Mita's avatar Akinobu Mita Committed by Linus Torvalds
Browse files

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: default avatarAkinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus 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;

	}