# \[PATCH 08/16\] blk-mq: remove blk\_qc\_t\_valid

- From: Christoph Hellwig \<hch@lst.de\>
- Date: 2021-10-12 11:24:42 
- List: linux-block
- Page: https://ratatoskr.run/linux-block/2021/10/215756
- Thread: https://ratatoskr.run/linux-block/2021/10/215748/t.md

```text
Move the trivial check into the only caller.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <redacted>
Tested-by: Mark Wunderlich <redacted>
---
 block/blk-mq.c            | 2 +-
 include/linux/blk_types.h | 5 -----
 2 files changed, 1 insertion(+), 6 deletions(-)

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 3d65e79a11db5..ec2bee3d19f2d 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -4067,7 +4067,7 @@ static int blk_mq_poll_classic(struct request_queue *q, blk_qc_t cookie,
  */
 int blk_poll(struct request_queue *q, blk_qc_t cookie, bool spin)
 {
-	if (!blk_qc_t_valid(cookie) ||
+	if (cookie == BLK_QC_T_NONE ||
 	    !test_bit(QUEUE_FLAG_POLL, &q->queue_flags))
 		return 0;
 
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index fb7c1477617b8..5017ba8fc5392 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -500,11 +500,6 @@ typedef unsigned int blk_qc_t;
 #define BLK_QC_T_SHIFT		16
 #define BLK_QC_T_INTERNAL	(1U << 31)
 
-static inline bool blk_qc_t_valid(blk_qc_t cookie)
-{
-	return cookie != BLK_QC_T_NONE;
-}
-
 struct blk_rq_stat {
 	u64 mean;
 	u64 min;
-- 
2.30.2

```