linux-kernel - [PATCH -next] soc: qcom: dcc: Fix unsigned comparison with less than zero

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Message-Id: <20230106011710.2827-1-yang.lee@linux.alibaba.com>
Date:   Fri,  6 Jan 2023 09:17:10 +0800
From:   Yang Li <yang.lee@...ux.alibaba.com>
To:     quic_schowdhu@...cinc.com
Cc:     agross@...nel.org, andersson@...nel.org, konrad.dybcio@...aro.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Yang Li <yang.lee@...ux.alibaba.com>,
        Abaci Robot <abaci@...ux.alibaba.com>
Subject: [PATCH -next] soc: qcom: dcc: Fix unsigned comparison with less than zero

The return value from the call to kstrtouint_from_user() is int.
However, the return value is being assigned to
an unsigned int variable 'ret', so making 'ret' an int.

Eliminate the following warning:
./drivers/soc/qcom/dcc.c:815:5-8: WARNING: Unsigned expression compared with zero: ret < 0

Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=3638
Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@...ux.alibaba.com>
---
 drivers/soc/qcom/dcc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/qcom/dcc.c b/drivers/soc/qcom/dcc.c
index d4101f79cb5d..5b50d638771d 100644
--- a/drivers/soc/qcom/dcc.c
+++ b/drivers/soc/qcom/dcc.c
@@ -808,7 +808,8 @@ static ssize_t config_reset_write(struct file *filp,
 				  const char __user *user_buf, size_t count,
 				  loff_t *ppos)
 {
-	unsigned int val, ret;
+	unsigned int val;
+	int ret;
 	struct dcc_drvdata *drvdata = filp->private_data;
 
 	ret = kstrtouint_from_user(user_buf, count, 0, &val);
-- 
2.20.1.7.g153144c