linux-kernel - [PATCH v3 2/3] scsi: ufs: Remove redundant null checking of devfreq instance

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Message-ID: <20210120150142.5049-3-stanley.chu@mediatek.com>
Date:   Wed, 20 Jan 2021 23:01:41 +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 v3 2/3] scsi: ufs: Remove redundant null checking of devfreq instance

hba->devfreq is zero-initialized thus it is not required
to check its existence in ufshcd_add_lus() function which
is invoked during initialization only.

Reviewed-by: Can Guo <cang@...eaurora.org>
Signed-off-by: Stanley Chu <stanley.chu@...iatek.com>
---
 drivers/scsi/ufs/ufshcd.c | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 226504d05c14..f707234580ea 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -7777,15 +7777,14 @@ static int ufshcd_add_lus(struct ufs_hba *hba)
 			&hba->pwr_info,
 			sizeof(struct ufs_pa_layer_attr));
 		hba->clk_scaling.saved_pwr_info.is_valid = true;
-		if (!hba->devfreq) {
-			hba->clk_scaling.is_allowed = true;
-			ret = ufshcd_devfreq_init(hba);
-			if (ret)
-				goto out;
+		hba->clk_scaling.is_allowed = true;
 
-			hba->clk_scaling.is_enabled = true;
-			ufshcd_init_clk_scaling_sysfs(hba);
-		}
+		ret = ufshcd_devfreq_init(hba);
+		if (ret)
+			goto out;
+
+		hba->clk_scaling.is_enabled = true;
+		ufshcd_init_clk_scaling_sysfs(hba);
 	}
 
 	ufs_bsg_probe(hba);
-- 
2.18.0