linux-kernel - [PATCH v2] scsi: ufs: ufs-mediatek : Fix NULL vs IS_ERR checking in ufs_mtk_init_va09_pwr

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Message-Id: <20211222070930.9449-1-linmq006@gmail.com>
Date:   Wed, 22 Dec 2021 07:09:30 +0000
From:   Miaoqian Lin <linmq006@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     linmq006@...il.com, Stanley Chu <stanley.chu@...iatek.com>,
        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>,
        Matthias Brugger <matthias.bgg@...il.com>,
        linux-scsi@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v2] scsi: ufs: ufs-mediatek : Fix NULL vs IS_ERR checking in ufs_mtk_init_va09_pwr_ctrl

The function regulator_get() return error pointer,
use IS_ERR() to check if has error.

Fixes: cf137b3ea49a ("scsi: ufs-mediatek: Support VA09 regulator operations")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 drivers/scsi/ufs/ufs-mediatek.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index 5393b5c9dd9c..86a938075f30 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -557,7 +557,7 @@ static void ufs_mtk_init_va09_pwr_ctrl(struct ufs_hba *hba)
 	struct ufs_mtk_host *host = ufshcd_get_variant(hba);
 
 	host->reg_va09 = regulator_get(hba->dev, "va09");
-	if (!host->reg_va09)
+	if (IS_ERR(host->reg_va09))
 		dev_info(hba->dev, "failed to get va09");
 	else
 		host->caps |= UFS_MTK_CAP_VA09_PWR_CTRL;
-- 
2.17.1