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@xxxxxxxxxxxxxxxxx> Signed-off-by: Yang Li <yang.lee@xxxxxxxxxxxxxxxxx> --- 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