UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

Revert "Make sure clk scaling happens only when HBA is runtime ACTIVE" 

Commit 73cc291c27 ("scsi: ufs: Make sure clk scaling happens only
when HBA is runtime ACTIVE") is no longer needed since commit
0e9d4ca43b ("scsi: ufs: Protect some contexts from unexpected clock
scaling") is a more mature fix to protect UFS LLD stability from clock
scaling invoked through sysfs nodes by users.

Link: https://lore.kernel.org/r/1611137065-14266-4-git-send-email-cang@codeaurora.org
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Can Guo 2021-01-20 02:04:23 -08:00 committed by Martin K. Petersen
parent 4543d9d782
commit b02d51afca
1 changed files with 0 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/scsi/ufs/ufshcd.c
View File

@ -1352,15 +1352,8 @@ static int ufshcd_devfreq_target(struct device *dev,
}
spin_unlock_irqrestore(hba->host->host_lock, irq_flags);
pm_runtime_get_noresume(hba->dev);
if (!pm_runtime_active(hba->dev)) {
pm_runtime_put_noidle(hba->dev);
ret = -EAGAIN;
goto out;
}
start = ktime_get();
ret = ufshcd_devfreq_scale(hba, scale_up);
pm_runtime_put(hba->dev);
trace_ufshcd_profile_clk_scaling(dev_name(hba->dev),
(scale_up ? "up" : "down"),