Input: drivers/input/joystick - don't access dev->private directly

Use input_get_drvdata() and input_set_drvdata() instead.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/joystick/gf2k.c b/drivers/input/joystick/gf2k.c
index bacbab5..ac7db7a 100644
--- a/drivers/input/joystick/gf2k.c
+++ b/drivers/input/joystick/gf2k.c
@@ -220,7 +220,7 @@
 
 static int gf2k_open(struct input_dev *dev)
 {
-	struct gf2k *gf2k = dev->private;
+	struct gf2k *gf2k = input_get_drvdata(dev);
 
 	gameport_start_polling(gf2k->gameport);
 	return 0;
@@ -228,7 +228,7 @@
 
 static void gf2k_close(struct input_dev *dev)
 {
-	struct gf2k *gf2k = dev->private;
+	struct gf2k *gf2k = input_get_drvdata(dev);
 
 	gameport_stop_polling(gf2k->gameport);
 }
@@ -309,10 +309,12 @@
 	input_dev->id.product = gf2k->id;
 	input_dev->id.version = 0x0100;
 	input_dev->cdev.dev = &gameport->dev;
-	input_dev->private = gf2k;
+
+	input_set_drvdata(input_dev, gf2k);
 
 	input_dev->open = gf2k_open;
 	input_dev->close = gf2k_close;
+
 	input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
 
 	for (i = 0; i < gf2k_axes[gf2k->id]; i++)