From: Can Guo <cang@codeaurora.org>
To: asutoshd@codeaurora.org, nguyenb@codeaurora.org,
hongwus@codeaurora.org, ziqichen@codeaurora.org,
linux-scsi@vger.kernel.org, kernel-team@android.com,
cang@codeaurora.org
Cc: Alim Akhtar <alim.akhtar@samsung.com>,
Avri Altman <avri.altman@wdc.com>,
"James E.J. Bottomley" <jejb@linux.ibm.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
Stanley Chu <stanley.chu@mediatek.com>,
Bean Huo <beanhuo@micron.com>,
linux-kernel@vger.kernel.org (open list),
linux-arm-kernel@lists.infradead.org (moderated
list:ARM/Mediatek SoC support),
linux-mediatek@lists.infradead.org (moderated list:ARM/Mediatek
SoC support)
Subject: [PATCH v10 3/3] scsi: ufs: Revert "Make sure clk scaling happens only when HBA is runtime ACTIVE"
Date: Tue, 19 Jan 2021 03:53:01 -0800 [thread overview]
Message-ID: <1611057183-6925-4-git-send-email-cang@codeaurora.org> (raw)
In-Reply-To: <1611057183-6925-1-git-send-email-cang@codeaurora.org>
Commit 73cc291c27024 ("Make sure clk scaling happens only when HBA is
runtime ACTIVE") is no longer needed since commit f7a42540928a8 ("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.
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Can Guo <cang@codeaurora.org>
---
drivers/scsi/ufs/ufshcd.c | 7 -------
1 file changed, 7 deletions(-)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index df046bd..8ec41ea 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -1355,15 +1355,8 @@ 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"),
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.
prev parent reply other threads:[~2021-01-19 12:07 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1611057183-6925-1-git-send-email-cang@codeaurora.org>
2021-01-19 11:52 ` [PATCH v10 1/3] scsi: ufs: Protect some contexts from unexpected clock scaling Can Guo
2021-01-20 4:54 ` Stanley Chu
2021-01-20 8:29 ` Can Guo
2021-01-19 11:53 ` [PATCH v10 2/3] scsi: ufs: Refactor ufshcd_init/exit_clk_scaling/gating() Can Guo
2021-01-20 5:05 ` Stanley Chu
2021-01-19 11:53 ` Can Guo [this message]
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