[PATCH] Thermal cpu cooling: return error if no valid cpu frequencyentry

[Zhang Rui]

Signed-off-by: Zhang Rui <rui.zhang@xxxxxxxxx>
---
 drivers/thermal/cpu_cooling.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
index cc556a8..bb486b4 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--;
 
-- 
1.7.9.5



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