UPSTREAM: scsi: ufs: core: Only suspend clock scaling if scaling down
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.
Change-Id: I29bade220bbfed3bc8df1f0866b84c03925f86e0
(cherry picked from commit 1d969731b87f122108c50a64acfdbaa63486296e)
Signed-off-by: Peter Wang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 8837c9a..429eb9e 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -1444,7 +1444,7 @@ 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);
