Commit c072fed9 authored Sep 27, 2012 by Sachin Kamat Committed by Zhang Rui Sep 28, 2012

thermal: Exynos: Fix NULL pointer dereference in exynos_unregister_thermal()

exynos_unregister_thermal() is functional only when 'th_zone' is not
NULL (ensured by the NULL checks). However, in the event it is NULL, it
gets dereferenced in the for loop. This patch fixes this issue.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>

parent a4b6fec9

drivers/thermal/exynos_thermal.c

+5 −2

Original line number	Diff line number	Diff line
		@@ -475,11 +475,14 @@ static void exynos_unregister_thermal(void)
		{
		int i;

		if (th_zone && th_zone->therm_dev)
		if (!th_zone)
		return;

		if (th_zone->therm_dev)
		thermal_zone_device_unregister(th_zone->therm_dev);

		for (i = 0; i < th_zone->cool_dev_size; i++) {
		if (th_zone && th_zone->cool_dev[i])
		if (th_zone->cool_dev[i])
		cpufreq_cooling_unregister(th_zone->cool_dev[i]);
		}