[PATCH v4 07/17] scsi: ufs: Remove ufshcd_any_tag_in_use()

From: Bart Van Assche <bvanassche@acm.org>
To: "Martin K . Petersen" <martin.petersen@oracle.com>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>,
	Adrian Hunter <adrian.hunter@intel.com>,
	linux-scsi@vger.kernel.org, Bart Van Assche <bvanassche@acm.org>,
	Bean Huo <beanhuo@micron.com>,
	"James E.J. Bottomley" <jejb@linux.ibm.com>,
	Avri Altman <avri.altman@wdc.com>, Can Guo <cang@codeaurora.org>,
	Stanley Chu <stanley.chu@mediatek.com>,
	Asutosh Das <asutoshd@codeaurora.org>
Subject: [PATCH v4 07/17] scsi: ufs: Remove ufshcd_any_tag_in_use()
Date: Fri,  3 Dec 2021 15:19:40 -0800	[thread overview]
Message-ID: <20211203231950.193369-8-bvanassche@acm.org> (raw)
In-Reply-To: <20211203231950.193369-1-bvanassche@acm.org>

Use hba->outstanding_reqs instead of ufshcd_any_tag_in_use(). This patch
prepares for removal of the blk_mq_start_request() call from
ufshcd_wait_for_dev_cmd(). blk_mq_tagset_busy_iter() only iterates over
started requests.

Reviewed-by: Bean Huo <beanhuo@micron.com>
Tested-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/ufshcd.c | 21 +--------------------
 1 file changed, 1 insertion(+), 20 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 04a19b826837..974bf47e733c 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -1352,25 +1352,6 @@ static int ufshcd_devfreq_target(struct device *dev,
 	return ret;
 }
 
-static bool ufshcd_is_busy(struct request *req, void *priv, bool reserved)
-{
-	int *busy = priv;
-
-	WARN_ON_ONCE(reserved);
-	(*busy)++;
-	return false;
-}
-
-/* Whether or not any tag is in use by a request that is in progress. */
-static bool ufshcd_any_tag_in_use(struct ufs_hba *hba)
-{
-	struct request_queue *q = hba->cmd_queue;
-	int busy = 0;
-
-	blk_mq_tagset_busy_iter(q->tag_set, ufshcd_is_busy, &busy);
-	return busy;
-}
-
 static int ufshcd_devfreq_get_dev_status(struct device *dev,
 		struct devfreq_dev_status *stat)
 {
@@ -1769,7 +1750,7 @@ static void ufshcd_gate_work(struct work_struct *work)
 
 	if (hba->clk_gating.active_reqs
 		|| hba->ufshcd_state != UFSHCD_STATE_OPERATIONAL
-		|| ufshcd_any_tag_in_use(hba) || hba->outstanding_tasks
+		|| hba->outstanding_reqs || hba->outstanding_tasks
 		|| hba->active_uic_cmd || hba->uic_async_done)
 		goto rel_lock;
 
