My initial impulse was to check for IS_ERR_OR_NULL() but when I looked
at this code a bit more closely, we should only need to check for
IS_ERR().
The blk_mq_alloc_tag_set() returns negative error codes and zero on
success so we can just do an "if (rc) goto err_out;". It's better to
preserve the error code anyhow. The blk_mq_init_queue() returns error
pointers on failure, it never returns NULL. We can also remove the
"q = NULL;" at the start because that's no longer needed.
Fixes: ca33dd92968b ("skd: Convert to blk-mq")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
diff --git a/drivers/block/skd_main.c b/drivers/block/skd_main.c
index 9b99081a623c..8579eef80ef1 100644
--- a/drivers/block/skd_main.c
+++ b/drivers/block/skd_main.c
@@ -2862,7 +2862,6 @@ static int skd_cons_disk(struct skd_device *skdev)
disk->fops = &skd_blockdev_ops;
disk->private_data = skdev;
- q = NULL;
memset(&skdev->tag_set, 0, sizeof(skdev->tag_set));
skdev->tag_set.ops = &skd_mq_ops;
skdev->tag_set.nr_hw_queues = 1;
@@ -2874,13 +2873,13 @@ static int skd_cons_disk(struct skd_device *skdev)
BLK_MQ_F_SG_MERGE |
BLK_ALLOC_POLICY_TO_MQ_FLAG(BLK_TAG_ALLOC_FIFO);
skdev->tag_set.driver_data = skdev;
- if (blk_mq_alloc_tag_set(&skdev->tag_set) >= 0) {
- q = blk_mq_init_queue(&skdev->tag_set);
- if (!q)
- blk_mq_free_tag_set(&skdev->tag_set);
- }
- if (!q) {
- rc = -ENOMEM;
+ rc = blk_mq_alloc_tag_set(&skdev->tag_set);
+ if (rc)
+ goto err_out;
+ q = blk_mq_init_queue(&skdev->tag_set);
+ if (IS_ERR(q)) {
+ blk_mq_free_tag_set(&skdev->tag_set);
+ rc = PTR_ERR(q);
goto err_out;
}
blk_queue_bounce_limit(q, BLK_BOUNCE_HIGH);
--
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