linux-kernel - [82/89] CPUFREQ: Remove cpufreq_stats sysfs entries on module unload.

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Date:	Wed, 15 Jun 2011 17:00:45 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Dave Jones <davej@...hat.com>
Subject: [82/89] CPUFREQ: Remove cpufreq_stats sysfs entries on module unload.

2.6.39-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Dave Jones <davej@...hat.com>

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@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/cpufreq/cpufreq_stats.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/cpufreq/cpufreq_stats.c
+++ b/drivers/cpufreq/cpufreq_stats.c
@@ -388,6 +388,7 @@ static void __exit cpufreq_stats_exit(vo
 	unregister_hotcpu_notifier(&cpufreq_stat_cpu_notifier);
 	for_each_online_cpu(cpu) {
 		cpufreq_stats_free_table(cpu);
+		cpufreq_stats_free_sysfs(cpu);
 	}
 }
 


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