[PATCH] ublk: remove unnecessary ubq checks

[Caleb Sander Mateos]

ublk_init_queues() ensures that all nr_hw_queues queues are initialized,
with each ublk_queue's q_id set to its index. And ublk_init_queues() is
called before ublk_add_chdev(), which creates the cdev. Is is therefore
impossible for the !ubq || ub_cmd->q_id != ubq->q_id condition to hit in
__ublk_ch_uring_cmd(). Remove it to avoids some branches in the I/O path.

Signed-off-by: Caleb Sander Mateos <csander@xxxxxxxxxxxxxxx>
---
 drivers/block/ublk_drv.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c
index cdb1543fa4a9..bc86231f5e27 100644
--- a/drivers/block/ublk_drv.c
+++ b/drivers/block/ublk_drv.c
@@ -1947,13 +1947,10 @@ static int __ublk_ch_uring_cmd(struct io_uring_cmd *cmd,
 
 	if (ub_cmd->q_id >= ub->dev_info.nr_hw_queues)
 		goto out;
 
 	ubq = ublk_get_queue(ub, ub_cmd->q_id);
-	if (!ubq || ub_cmd->q_id != ubq->q_id)
-		goto out;
-
 	if (ubq->ubq_daemon && ubq->ubq_daemon != current)
 		goto out;
 
 	if (tag >= ubq->q_depth)
 		goto out;
-- 
2.45.2