Merge "cpufreq: Add if cpu is online check in show" (c6a9711d) · Commits · e / devices / android_kernel_sony_msm8994

drivers/cpufreq/cpufreq.c

+9 −3

Original line number	Diff line number	Diff line
		@@ -657,10 +657,15 @@ static ssize_t show(struct kobject kobj, struct attribute attr, char *buf)
		{
		struct cpufreq_policy *policy = to_policy(kobj);
		struct freq_attr *fattr = to_attr(attr);
		ssize_t ret;
		ssize_t ret = -EINVAL;

		get_online_cpus();

		if (!cpu_online(policy->cpu))
		goto unlock;

		if (!down_read_trylock(&cpufreq_rwsem))
		return -EINVAL;
		goto unlock;

		down_read(&policy->rwsem);

		@@ -671,7 +676,8 @@ static ssize_t show(struct kobject kobj, struct attribute attr, char *buf)

		up_read(&policy->rwsem);
		up_read(&cpufreq_rwsem);

		unlock:
		put_online_cpus();
		return ret;
		}