cpufreq: Update sscanf() to kstrtouint()

In store_scaling_setspeed(), sscanf is still used to read to sysfs.
Newer kstrtox provide more features including overflow protection,
better errorhandling and allows for other systems of numeration. It
is therefore better to update sscanf() to kstrtouint().

Signed-off-by: Bowen Yu <yubowen8@huawei.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://patch.msgid.link/20250519070938.931396-1-yubowen8@huawei.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index fbd09c0845ff7fa48ccfca2090cfcf432ccb4840..d7426e1d8bdd2628538ab5487e1dfd6609b1cf4d 100644 (file)
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -917,9 +917,9 @@ static ssize_t store_scaling_setspeed(struct cpufreq_policy *policy,
        if (!policy->governor || !policy->governor->store_setspeed)
                return -EINVAL;
 
-       ret = sscanf(buf, "%u", &freq);
-       if (ret != 1)
-               return -EINVAL;
+       ret = kstrtouint(buf, 0, &freq);
+       if (ret)
+               return ret;
 
        policy->governor->store_setspeed(policy, freq);