From: Dave Jones <davej@redhat.com>
Date: Sun, 12 Jun 2011 20:35:28 +0000 (-0400)
Subject: [CPUFREQ] Remove cpufreq_stats sysfs entries on module unload.
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=13f067537f34456443f61c950cd6dc37d1d5f3ee;p=openwrt%2Fstaging%2Fblogic.git

[CPUFREQ] Remove cpufreq_stats sysfs entries on module unload.

cpufreq_stats leaves behind its sysfs entries, which causes a panic
when something stumbled across them.
(Discovered by unloading cpufreq_stats while powertop was loaded).

Signed-off-by: Dave Jones <davej@redhat.com>
Cc: stable@kernel.org
---

diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c
index b60a4c263686..853f92d23ddb 100644
--- a/drivers/cpufreq/cpufreq_stats.c
+++ b/drivers/cpufreq/cpufreq_stats.c
@@ -387,6 +387,7 @@ static void __exit cpufreq_stats_exit(void)
 	unregister_hotcpu_notifier(&cpufreq_stat_cpu_notifier);
 	for_each_online_cpu(cpu) {
 		cpufreq_stats_free_table(cpu);
+		cpufreq_stats_free_sysfs(cpu);
 	}
 }