Input: make sure input interfaces pin parent input devices

[deliverable/linux.git] / include / linux / input.h

diff --git a/include/linux/input.h b/include/linux/input.h
index 1bdc39a8c76c6a0916af7b6698fdcd219a26c1fb..cae2c35d1206593bc6a3154e44ae47ef1db6fb75 100644 (file)
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -1227,12 +1227,13 @@ void input_free_device(struct input_dev *dev);
 
 static inline struct input_dev *input_get_device(struct input_dev *dev)
 {
-       return to_input_dev(get_device(&dev->dev));
+       return dev ? to_input_dev(get_device(&dev->dev)) : NULL;
 }
 
 static inline void input_put_device(struct input_dev *dev)
 {
-       put_device(&dev->dev);
+       if (dev)
+               put_device(&dev->dev);
 }
 
 static inline void *input_get_drvdata(struct input_dev *dev)