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authorZhang Rui <rui.zhang@intel.com>2014-01-02 11:57:48 +0800
committerZhang Rui <rui.zhang@intel.com>2014-01-02 11:59:18 +0800
commita116776f7b6052599df0c67db29c30ea9d69d7ee (patch)
treee83cd1cb0bfc10282477e516b83b7ece706ba0e0 /drivers/thermal
parent1c9573a40c1d34494419f32560f28c763c504d79 (diff)
Thermal cpu cooling: return error if no valid cpu frequency entry
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Diffstat (limited to 'drivers/thermal')
-rw-r--r--drivers/thermal/cpu_cooling.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
index cc556a8e2842..bb486b4ca48e 100644
--- a/drivers/thermal/cpu_cooling.c
+++ b/drivers/thermal/cpu_cooling.c
@@ -173,6 +173,11 @@ static int get_property(unsigned int cpu, unsigned long input,
freq = table[i].frequency;
max_level++;
}
+
+ /* No valid cpu frequency entry */
+ if (max_level == 0)
+ return -EINVAL;
+
/* max_level is an index, not a counter */
max_level--;