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Message-ID: <20201216131639.4128-2-stanley.chu@mediatek.com>
Date: Wed, 16 Dec 2020 21:16:36 +0800
From: Stanley Chu <stanley.chu@...iatek.com>
To: <linux-scsi@...r.kernel.org>, <martin.petersen@...cle.com>,
<avri.altman@....com>, <alim.akhtar@...sung.com>,
<jejb@...ux.ibm.com>
CC: <beanhuo@...ron.com>, <asutoshd@...eaurora.org>,
<cang@...eaurora.org>, <matthias.bgg@...il.com>,
<bvanassche@....org>, <linux-mediatek@...ts.infradead.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>, <kuohong.wang@...iatek.com>,
<peter.wang@...iatek.com>, <chun-hung.wu@...iatek.com>,
<andy.teng@...iatek.com>, <chaotian.jing@...iatek.com>,
<cc.chou@...iatek.com>, <jiajie.hao@...iatek.com>,
<alice.chao@...iatek.com>, Stanley Chu <stanley.chu@...iatek.com>
Subject: [PATCH v2 1/4] scsi: ufs: Refactor cancelling clkscaling works
Cancelling suspend_work and resume_work is only required while
suspending clk-scaling. Thus moving these two invokes into
ufshcd_suspend_clkscaling() function.
Signed-off-by: Stanley Chu <stanley.chu@...iatek.com>
---
drivers/scsi/ufs/ufshcd.c | 17 ++++++-----------
1 file changed, 6 insertions(+), 11 deletions(-)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 052479a56a6f..a91b73a1fc48 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -1451,6 +1451,9 @@ static void ufshcd_suspend_clkscaling(struct ufs_hba *hba)
if (!ufshcd_is_clkscaling_supported(hba))
return;
+ cancel_work_sync(&hba->clk_scaling.suspend_work);
+ cancel_work_sync(&hba->clk_scaling.resume_work);
+
spin_lock_irqsave(hba->host->host_lock, flags);
if (!hba->clk_scaling.is_suspended) {
suspend = true;
@@ -1514,9 +1517,6 @@ static ssize_t ufshcd_clkscale_enable_store(struct device *dev,
pm_runtime_get_sync(hba->dev);
ufshcd_hold(hba, false);
- cancel_work_sync(&hba->clk_scaling.suspend_work);
- cancel_work_sync(&hba->clk_scaling.resume_work);
-
if (value) {
ufshcd_resume_clkscaling(hba);
} else {
@@ -5663,11 +5663,8 @@ static void ufshcd_err_handling_prepare(struct ufs_hba *hba)
ufshcd_vops_resume(hba, UFS_RUNTIME_PM);
} else {
ufshcd_hold(hba, false);
- if (hba->clk_scaling.is_enabled) {
- cancel_work_sync(&hba->clk_scaling.suspend_work);
- cancel_work_sync(&hba->clk_scaling.resume_work);
+ if (hba->clk_scaling.is_enabled)
ufshcd_suspend_clkscaling(hba);
- }
}
down_write(&hba->clk_scaling_lock);
hba->clk_scaling.is_allowed = false;
@@ -8512,11 +8509,9 @@ static int ufshcd_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op)
ufshcd_hold(hba, false);
hba->clk_gating.is_suspended = true;
- if (hba->clk_scaling.is_enabled) {
- cancel_work_sync(&hba->clk_scaling.suspend_work);
- cancel_work_sync(&hba->clk_scaling.resume_work);
+ if (hba->clk_scaling.is_enabled)
ufshcd_suspend_clkscaling(hba);
- }
+
down_write(&hba->clk_scaling_lock);
hba->clk_scaling.is_allowed = false;
up_write(&hba->clk_scaling_lock);
--
2.18.0
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