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
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -421,7 +421,7 @@
#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 @@
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 @@
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 *);