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

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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>

Bug: 189417930
(cherry picked from commit b02d51afca
git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git 5.14/scsi-queue)
Change-Id: I752b3611ca2b85b9ddd0cc457310ff4c57baa27b
Signed-off-by: Can Guo <cang@codeaurora.org>
This commit is contained in:
Can Guo 2021-01-20 02:04:23 -08:00 • committed by Todd Kjos
commit b9a049ac4e
1 changed files with 0 additions and 7 deletions
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7
drivers/scsi/ufs/ufshcd.c
View file

@ -1316,15 +1316,8 @@ 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"),