[PATCH v1] ufs: core: only suspend clock scaling if scale down

[peter.wang at mediatek.com]

From: Peter Wang <peter.wang at mediatek.com>

If clock scale up and suspend clock scaling, ufs will keep high
performance/power mode but no read/write requests on going.
It is logic wrong and have power concern.

Fixes: 401f1e4490ee ("scsi: ufs: don't suspend clock scaling during clock gating")
Cc: <stable at vger.kernel.org>
Signed-off-by: Peter Wang <peter.wang at mediatek.com>
---
 drivers/ufs/core/ufshcd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 129446775796..e3672e55efae 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -1458,7 +1458,7 @@ static int ufshcd_devfreq_target(struct device *dev,
 		ktime_to_us(ktime_sub(ktime_get(), start)), ret);
 
 out:
-	if (sched_clk_scaling_suspend_work)
+	if (sched_clk_scaling_suspend_work && !scale_up)
 		queue_work(hba->clk_scaling.workq,
 			   &hba->clk_scaling.suspend_work);
 
-- 
2.18.0