From: Dan Carpenter Date: Mon, 18 Jul 2022 11:14:09 +0000 (+0300) Subject: ublk_drv: fix an IS_ERR() vs NULL check X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=fe3333f6953848f1c24e91a1cf70eed026dc3a86;p=linux.git ublk_drv: fix an IS_ERR() vs NULL check The blk_mq_alloc_disk_for_queue() doesn't return error pointers, it returns NULL on error. Fixes: cebbe577cb17 ("ublk_drv: fix request queue leak") Signed-off-by: Dan Carpenter Reviewed-by: Ming Lei Link: https://lore.kernel.org/r/YtVAgedTsQVK1oTM@kili Signed-off-by: Jens Axboe --- diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c index 796d8230fb605..b90481b295a74 100644 --- a/drivers/block/ublk_drv.c +++ b/drivers/block/ublk_drv.c @@ -1174,8 +1174,8 @@ static int ublk_add_dev(struct ublk_device *ub) disk = ub->ub_disk = blk_mq_alloc_disk_for_queue(ub->ub_queue, &ublk_bio_compl_lkclass); - if (IS_ERR(disk)) { - err = PTR_ERR(disk); + if (!disk) { + err = -ENOMEM; goto out_free_request_queue; }