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block: fix checking return value of blk_mq_init_queue

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Check IS_ERR_OR_NULL(return value) instead of just return value.

Signed-off-by: Ming Lei <[email protected]>

Reduced to IS_ERR() by me, we never return NULL.
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Ming Lei 2015-01-02 14:25:27 +00:00 • committed by Jens Axboe
commit 35b489d32f
3 changed files with 3 additions and 3 deletions
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2
drivers/block/null_blk.c
View file

@ -530,7 +530,7 @@ static int null_add_dev(void)
goto out_cleanup_queues;
nullb->q = blk_mq_init_queue(&nullb->tag_set);
if (!nullb->q) {
if (IS_ERR(nullb->q)) {
rv = -ENOMEM;
goto out_cleanup_tags;
}

2
drivers/block/nvme-core.c
View file

@ -1376,7 +1376,7 @@ static int nvme_alloc_admin_tags(struct nvme_dev *dev)
return -ENOMEM;
dev->admin_q = blk_mq_init_queue(&dev->admin_tagset);
if (!dev->admin_q) {
if (IS_ERR(dev->admin_q)) {
blk_mq_free_tag_set(&dev->admin_tagset);
return -ENOMEM;
}

2
drivers/block/virtio_blk.c
View file

@ -638,7 +638,7 @@ static int virtblk_probe(struct virtio_device *vdev)
goto out_put_disk;
q = vblk->disk->queue = blk_mq_init_queue(&vblk->tag_set);
if (!q) {
if (IS_ERR(q)) {
err = -ENOMEM;
goto out_free_tags;
}