Input: fix input_free_device() implementation

input_free_device can't just call kfree because if input_register_device
fails after successfully registering corresponding class device there
is a chance that someone could get a reference to it. We need to use
input_put_device() to make sure that we don't delete input device until
last reference to it was dropped.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

diff --git a/include/linux/input.h b/include/linux/input.h
index 6dca6ba..cf30f3c 100644 (file)
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -421,7 +421,7 @@ struct input_absinfo {
 #define BTN_GEAR_UP            0x151
 
 #define KEY_OK                 0x160
-#define KEY_SELECT             0x161
+#define KEY_SELECT             0x161
 #define KEY_GOTO               0x162
 #define KEY_CLEAR              0x163
 #define KEY_POWER2             0x164
@@ -995,11 +995,6 @@ static inline void init_input_dev(struct input_dev *dev)
 
 struct input_dev *input_allocate_device(void);
 
-static inline void input_free_device(struct input_dev *dev)
-{
-       kfree(dev);
-}
-
 static inline struct input_dev *input_get_device(struct input_dev *dev)
 {
        return to_input_dev(class_device_get(&dev->cdev));
@@ -1010,6 +1005,11 @@ static inline void input_put_device(struct input_dev *dev)
        class_device_put(&dev->cdev);
 }
 
+static inline void input_free_device(struct input_dev *dev)
+{
+       input_put_device(dev);
+}
+
 int input_register_device(struct input_dev *);
 void input_unregister_device(struct input_dev *);