linux-kernel - [PATCH v13 2/9] cpufreq: simplify boolean parsing with kstrtobool in store function

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Date: Sat, 22 Jun 2024 00:50:57 +0800
From: Perry Yuan <perry.yuan@....com>
To: <rafael.j.wysocki@...el.com>, <Mario.Limonciello@....com>,
	<viresh.kumar@...aro.org>, <gautham.shenoy@....com>
CC: <Alexander.Deucher@....com>, <Xinmei.Huang@....com>,
	<Xiaojian.Du@....com>, <Li.Meng@....com>, <linux-pm@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH v13 2/9] cpufreq: simplify boolean parsing with kstrtobool in store function

Update the cpufreq store function to use kstrtobool for parsing boolean
values. This simplifies the code and improves readability by using a
standard kernel function for boolean string conversion.

Reviewed-by: Mario Limonciello <mario.limonciello@....com>
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@....com>
Signed-off-by: Perry Yuan <perry.yuan@....com>
---
 drivers/cpufreq/cpufreq.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index a45aac17c20f..1fdabb660231 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -614,10 +614,9 @@ static ssize_t show_boost(struct kobject *kobj,
 static ssize_t store_boost(struct kobject *kobj, struct kobj_attribute *attr,
 			   const char *buf, size_t count)
 {
-	int ret, enable;
+	bool enable;
 
-	ret = sscanf(buf, "%d", &enable);
-	if (ret != 1 || enable < 0 || enable > 1)
+	if (kstrtobool(buf, &enable))
 		return -EINVAL;
 
 	if (cpufreq_boost_trigger_state(enable)) {
@@ -641,10 +640,10 @@ static ssize_t show_local_boost(struct cpufreq_policy *policy, char *buf)
 static ssize_t store_local_boost(struct cpufreq_policy *policy,
 				 const char *buf, size_t count)
 {
-	int ret, enable;
+	int ret;
+	bool enable;
 
-	ret = kstrtoint(buf, 10, &enable);
-	if (ret || enable < 0 || enable > 1)
+	if (kstrtobool(buf, &enable))
 		return -EINVAL;
 
 	if (!cpufreq_driver->boost_enabled)
-- 
2.34.1