From 633d47d653f3a717fb68293d24ab7059c480f71b Mon Sep 17 00:00:00 2001 From: Dirk Brandewie Date: Wed, 6 Feb 2013 09:02:12 -0800 Subject: [PATCH] cpufreq_stats: do not remove sysfs files if frequency table is not present The sysfs files for cpufreq_stats are created in cpufreq_stats_create_table() called from cpufreq_stat_notifier_policy() when a policy is added to the cpu. cpufreq_stats_create_table() will not be called if the scaling driver does not export a frequency table to cpufreq. Use the same fence on tear down. Signed-off-by: Dirk Brandewie Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq_stats.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c index a2dee4cedf41..2fd779eb1ed1 100644 --- a/drivers/cpufreq/cpufreq_stats.c +++ b/drivers/cpufreq/cpufreq_stats.c @@ -179,6 +179,10 @@ static void cpufreq_stats_free_table(unsigned int cpu) static void cpufreq_stats_free_sysfs(unsigned int cpu) { struct cpufreq_policy *policy = cpufreq_cpu_get(cpu); + + if (!cpufreq_frequency_get_table(cpu)) + return; + if (policy && !policy_is_shared(policy)) { pr_debug("%s: Free sysfs stat\n", __func__); sysfs_remove_group(&policy->kobj, &stats_attr_group); -- 2.39.5