Commit c072fed9 authored by Sachin Kamat's avatar Sachin Kamat Committed by Zhang Rui

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: default avatarSachin Kamat <sachin.kamat@linaro.org>
parent a4b6fec9
...@@ -475,11 +475,14 @@ static void exynos_unregister_thermal(void) ...@@ -475,11 +475,14 @@ static void exynos_unregister_thermal(void)
{ {
int i; 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); thermal_zone_device_unregister(th_zone->therm_dev);
for (i = 0; i < th_zone->cool_dev_size; i++) { 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]); cpufreq_cooling_unregister(th_zone->cool_dev[i]);
} }
......
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