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blk-mq: fix an IS_ERR() vs NULL bug

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The __blk_mq_alloc_disk() function doesn't return NULLs it returns
error pointers.

Fixes: b461dfc49e ("blk-mq: add the blk_mq_alloc_disk APIs")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/YMyjci35WBqrtqG+@mwanda
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Dan Carpenter
2021-06-18 16:45:22 +03:00
committed by Jens Axboe
parent e42cfb1da0
commit 52d7e28844
1 changed files with 1 additions and 1 deletions
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2
include/linux/blk-mq.h
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@@ -431,7 +431,7 @@ enum {
static struct lock_class_key __key; \ static struct lock_class_key __key; \
struct gendisk *__disk = __blk_mq_alloc_disk(set, queuedata); \ struct gendisk *__disk = __blk_mq_alloc_disk(set, queuedata); \
\ \
if (__disk) \ if (!IS_ERR(__disk)) \
lockdep_init_map(&__disk->lockdep_map, \ lockdep_init_map(&__disk->lockdep_map, \
"(bio completion)", &__key, 0); \ "(bio completion)", &__key, 0); \
__disk; \ __disk; \