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| author | Dirk Brandewie <dirk.brandewie@gmail.com> | 2013-02-06 09:02:12 -0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-02-09 12:55:59 +0100 |
| commit | 633d47d653f3a717fb68293d24ab7059c480f71b (patch) | |
| tree | fbfefad484062cacdd5541dc1aa4bbad2d2f0bbf /drivers/cpufreq | |
| parent | fa69e33f7d38e658583ff910642da7ea4515ad74 (diff) | |
| download | lwn-633d47d653f3a717fb68293d24ab7059c480f71b.tar.gz lwn-633d47d653f3a717fb68293d24ab7059c480f71b.zip | |
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 <dirk.j.brandewie@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/cpufreq_stats.c | 4 |
1 files changed, 4 insertions, 0 deletions
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); |