From:   Asutosh Das <quic_asutoshd@quicinc.com>
To:     <quic_cang@quicinc.com>, <martin.petersen@oracle.com>,
        <linux-scsi@vger.kernel.org>
CC:     <quic_nguyenb@quicinc.com>, <quic_xiaosenh@quicinc.com>,
        <stanley.chu@mediatek.com>, <adrian.hunter@intel.com>,
        <bvanassche@acm.org>, <avri.altman@wdc.com>, <mani@kernel.org>,
        <beanhuo@micron.com>, Asutosh Das <quic_asutoshd@quicinc.com>,
        <linux-arm-msm@vger.kernel.org>,
        Alim Akhtar <alim.akhtar@samsung.com>,
        "James E.J. Bottomley" <jejb@linux.ibm.com>,
        "open list" <linux-kernel@vger.kernel.org>
Subject: [PATCH v1 1/1] scsi: ufs: mcq: Use active_reqs to check busy in clock scaling
Date:   Tue, 7 Mar 2023 19:00:09 -0800
Message-ID: <e8d303eff0713a3e5f3c3725cdf6e5c5d3de2b01.1678244386.git.quic_asutoshd@quicinc.com>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

Multi Circular Queue doesn't use outstanding_reqs.
But the ufs clock scaling functions use outstanding_reqs to
determine if there're requests pending. When MCQ is enabled
this check always returns false.

Hence use active_reqs to check if there're pending requests.

Signed-off-by: Asutosh Das <quic_asutoshd@quicinc.com>
---
 drivers/ufs/core/ufshcd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 172d25fef740..c6b35123c83b 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -1500,7 +1500,7 @@ static int ufshcd_devfreq_get_dev_status(struct device *dev,
 	scaling->window_start_t = curr_t;
 	scaling->tot_busy_t = 0;
 
-	if (hba->outstanding_reqs) {
+	if (scaling->active_reqs) {
 		scaling->busy_start_t = curr_t;
 		scaling->is_busy_started = true;
 	} else {
@@ -2118,7 +2118,7 @@ static void ufshcd_clk_scaling_update_busy(struct ufs_hba *hba)
 
 	spin_lock_irqsave(hba->host->host_lock, flags);
 	hba->clk_scaling.active_reqs--;
-	if (!hba->outstanding_reqs && scaling->is_busy_started) {
+	if (!scaling->active_reqs && scaling->is_busy_started) {
 		scaling->tot_busy_t += ktime_to_us(ktime_sub(ktime_get(),
 					scaling->busy_start_t));
 		scaling->busy_start_t = 0;
-- 
2.7.4