nbd: Fix error handling
authorChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Sun, 30 Oct 2016 04:28:27 +0000 (05:28 +0100)
committerJens Axboe <axboe@fb.com>
Sun, 6 Nov 2016 21:14:59 +0000 (14:14 -0700)
commit772918524dfb8c8869120728c1b1109a2d49493c
tree387018dd45b281964a3f1c64766b3efb98a784fc
parentbc33b0ca11e3df467777a4fa7639ba488c9d4911
nbd: Fix error handling

'blk_mq_alloc_request()' returns an error pointer in case of error, not
NULL. So test it with IS_ERR.

Fixes:  fd8383fd88a2 ("nbd: convert to blkmq")

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Jens Axboe <axboe@fb.com>
drivers/block/nbd.c