linux-kernel - [PATCH] scsi: ufs: fix error return code of ufshcd_devfreq

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Date:   Fri,  5 Mar 2021 01:58:08 -0800
From:   Jia-Ju Bai <baijiaju1990@...il.com>
To:     alim.akhtar@...sung.com, avri.altman@....com, jejb@...ux.ibm.com,
        martin.petersen@...cle.com, stanley.chu@...iatek.com,
        cang@...eaurora.org, beanhuo@...ron.com, jaegeuk@...nel.org,
        asutoshd@...eaurora.org
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jia-Ju Bai <baijiaju1990@...il.com>
Subject: [PATCH] scsi: ufs: fix error return code of ufshcd_devfreq_target()

When the list of clk_list is empty, no error return code of
ufshcd_devfreq_target() is assigned.
To fix this bug, ret is assigned with -ENOENT as error return code.

Reported-by: TOTE Robot <oslab@...nghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@...il.com>
---
 drivers/scsi/ufs/ufshcd.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 77161750c9fb..d31aae56fd96 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -1337,6 +1337,7 @@ static int ufshcd_devfreq_target(struct device *dev,
 
 	if (list_empty(clk_list)) {
 		spin_unlock_irqrestore(hba->host->host_lock, irq_flags);
+		ret = -ENOENT;
 		goto out;
 	}
 
-- 
2.17.1