linux-kernel - [PATCH v2] scsi: ufs: Give clk scaling min gear a value

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Message-Id: <1611802172-37802-1-git-send-email-cang@codeaurora.org>
Date:   Wed, 27 Jan 2021 18:49:27 -0800
From:   Can Guo <cang@...eaurora.org>
To:     jaegeuk@...nel.org, asutoshd@...eaurora.org,
        nguyenb@...eaurora.org, hongwus@...eaurora.org,
        bjorn.andersson@...aro.org, linux-scsi@...r.kernel.org,
        kernel-team@...roid.com, cang@...eaurora.org
Cc:     Alim Akhtar <alim.akhtar@...sung.com>,
        Avri Altman <avri.altman@....com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Stanley Chu <stanley.chu@...iatek.com>,
        Bean Huo <beanhuo@...ron.com>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v2] scsi: ufs: Give clk scaling min gear a value

The initialization of clk_scaling.min_gear was removed by mistake. This
change adds it back, otherwise clock scaling down would fail.

Fixes: 4543d9d78227 ("scsi: ufs: Refactor ufshcd_init/exit_clk_scaling/gating()")

Signed-off-by: Can Guo <cang@...eaurora.org>
---
 drivers/scsi/ufs/ufshcd.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 36bcbb3..8ef6796 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -1602,6 +1602,9 @@ static void ufshcd_init_clk_scaling(struct ufs_hba *hba)
 	if (!ufshcd_is_clkscaling_supported(hba))
 		return;
 
+	if (!hba->clk_scaling.min_gear)
+		hba->clk_scaling.min_gear = UFS_HS_G1;
+
 	INIT_WORK(&hba->clk_scaling.suspend_work,
 		  ufshcd_clk_scaling_suspend_work);
 	INIT_WORK(&hba->clk_scaling.resume_work,
-- 
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