linux-kernel - [PATCH v3 1/3] cpufreq: Use int type to store negative error codes

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Message-Id: <20250902114545.651661-2-rongqianfeng@vivo.com>
Date: Tue,  2 Sep 2025 19:45:42 +0800
From: Qianfeng Rong <rongqianfeng@...o.com>
To: "Rafael J. Wysocki" <rafael@...nel.org>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	linux-pm@...r.kernel.org (open list:CPU FREQUENCY SCALING FRAMEWORK),
	linux-kernel@...r.kernel.org (open list)
Cc: Qianfeng Rong <rongqianfeng@...o.com>
Subject: [PATCH v3 1/3] cpufreq: Use int type to store negative error codes

Change the 'ret' variable in store_scaling_setspeed() from unsigned int to
int, as it needs to store either negative error codes or zero returned
by kstrtouint().

No effect on runtime.

Signed-off-by: Qianfeng Rong <rongqianfeng@...o.com>
---
 drivers/cpufreq/cpufreq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index a615c98d80ca..f47096683abb 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -914,7 +914,7 @@ static ssize_t store_scaling_setspeed(struct cpufreq_policy *policy,
 					const char *buf, size_t count)
 {
 	unsigned int freq = 0;
-	unsigned int ret;
+	int ret;
 
 	if (!policy->governor || !policy->governor->store_setspeed)
 		return -EINVAL;
-- 
2.34.1