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| author | Zhang Rui <rui.zhang@intel.com> | 2014-01-02 11:57:48 +0800 |
|---|---|---|
| committer | Zhang Rui <rui.zhang@intel.com> | 2014-01-02 11:59:18 +0800 |
| commit | a116776f7b6052599df0c67db29c30ea9d69d7ee (patch) | |
| tree | e83cd1cb0bfc10282477e516b83b7ece706ba0e0 | |
| parent | 1c9573a40c1d34494419f32560f28c763c504d79 (diff) | |
| download | linux-a116776f7b6052599df0c67db29c30ea9d69d7ee.tar.bz2 | |
Thermal cpu cooling: return error if no valid cpu frequency entry
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
| -rw-r--r-- | drivers/thermal/cpu_cooling.c | 5 |
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--; |