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scsi: ufs: core: Set task state before io_schedule_timeout()

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Set the task state to TASK_UNINTERRUPTIBLE before calling
io_schedule_timeout() in ufshcd_wait_for_pending_cmds().  Without
setting the task state, io_schedule_timeout() returns immediately
because the task state remains TASK_RUNNING. This results in a busy loop
that wastes CPU cycles.

Fixes: 2000bc3097 ("scsi: ufs: core: Reduce the clock scaling latency")
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Reported-by: Sashiko <sashiko-bot@kernel.org>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://patch.msgid.link/8fe4526ce272811b28e99048b42358dd8f7c48af.1786142946.git.bvanassche@acm.org
Signed-off-by: Martin K. Petersen (Oracle) <mkp@kernel.org>
This commit is contained in:
Bart Van Assche 2026-08-07 15:49:46 -07:00 committed by Martin K. Petersen (Oracle)
parent 376a3960e5
commit 720d8b2f24
1 changed files with 1 additions and 0 deletions
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drivers/ufs/core/ufshcd.c
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@ -1317,6 +1317,7 @@ static int ufshcd_wait_for_pending_cmds(struct ufs_hba *hba,
break;
}
__set_current_state(TASK_UNINTERRUPTIBLE);
io_schedule_timeout(msecs_to_jiffies(20));
if (ktime_to_us(ktime_sub(ktime_get(), start)) >
wait_timeout_us) {