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authorMing Lei <ming.lei@canonical.com>2015-01-02 14:25:27 +0000
committerJens Axboe <axboe@fb.com>2015-01-02 10:32:02 -0700
commit35b489d32fcc37e8735f41aa794b24cf9d1e74f5 (patch)
treef16c4c7a3148a3ca9c7c149ea6de66fd4423e7c8
parentaed3ea94bdd2ac0a21ed0103d34097e202ee77f6 (diff)
block: fix checking return value of blk_mq_init_queue
Check IS_ERR_OR_NULL(return value) instead of just return value. Signed-off-by: Ming Lei <ming.lei@canonical.com> Reduced to IS_ERR() by me, we never return NULL. Signed-off-by: Jens Axboe <axboe@fb.com>
-rw-r--r--drivers/block/null_blk.c2
-rw-r--r--drivers/block/nvme-core.c2
-rw-r--r--drivers/block/virtio_blk.c2
3 files changed, 3 insertions, 3 deletions
diff --git a/drivers/block/null_blk.c b/drivers/block/null_blk.c
index ae9f615382f6..aa2224aa7caa 100644
--- a/drivers/block/null_blk.c
+++ b/drivers/block/null_blk.c
@@ -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;
}
diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c
index 52d0f2d9fecd..f7d083bb3bd5 100644
--- a/drivers/block/nvme-core.c
+++ b/drivers/block/nvme-core.c
@@ -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;
}
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 7ef7c098708f..cdfbd21e3597 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -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;
}