Thermal cpu cooling: return error if no valid cpu frequency entry

Signed-off-by: Zhang Rui <rui.zhang@intel.com>

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--;