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-Tag: v2.6.39.2~8
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=89ae106c9a9c2747e11ae1bacd7f5a65207a9296;p=thirdparty%2Fkernel%2Fstable.git

CPUFREQ: Remove cpufreq_stats sysfs entries on module unload.

commit 13f067537f34456443f61c950cd6dc37d1d5f3ee upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c
index 4f1b8de2c9f39..7c7a1e481c0da 100644
--- a/drivers/cpufreq/cpufreq_stats.c
+++ b/drivers/cpufreq/cpufreq_stats.c
@@ -388,6 +388,7 @@ 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);
 	}
 }