Input: xpad - make xpad_play_effect() static

xpad_play_effect() does not need to be global.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c
index 067ed8d..de4fa8c 100644
--- a/drivers/input/joystick/xpad.c
+++ b/drivers/input/joystick/xpad.c
@@ -376,7 +376,8 @@
 		   __FUNCTION__, retval);
 }
 
-int xpad_play_effect(struct input_dev *dev, void *data, struct ff_effect *effect)
+static int xpad_play_effect(struct input_dev *dev, void *data,
+			    struct ff_effect *effect)
 {
 	struct usb_xpad *xpad = input_get_drvdata(dev);