Input: xpad - do not report nonexistent buttons for xbox360

The buttons BTN_C and BTN_Z are only used in the original xbox
controller, not in xbox360 controller. Therefore only add them to
keybit when the controller is a non-360 one.

Signed-off-by: Anssi Hannula <anssi.hannula@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 14 insertions, 4 deletions

diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c
index 89524954ab46..b48f7051bf30 100644
--- a/drivers/input/joystick/xpad.c
+++ b/drivers/input/joystick/xpad.c
@@ -144,12 +144,19 @@ static const struct xpad_device {
         { 0x0000, 0x0000, "Generic X-Box pad", MAP_DPAD_UNKNOWN, XTYPE_UNKNOWN }
 };
 
-static const signed short xpad_btn[] = {
-        BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z,       /* "analog" buttons */
+/* buttons shared with xbox and xbox360 */
+static const signed short xpad_common_btn[] = {
+        BTN_A, BTN_B, BTN_X, BTN_Y,                     /* "analog" buttons */
         BTN_START, BTN_BACK, BTN_THUMBL, BTN_THUMBR,    /* start/back/sticks */
         -1                                              /* terminating entry */
 };
 
+/* original xbox controllers only */
+static const signed short xpad_btn[] = {
+        BTN_C, BTN_Z,           /* "analog" buttons */
+        -1                      /* terminating entry */
+};
+
 /* only used if MAP_DPAD_TO_BUTTONS */
 static const signed short xpad_btn_pad[] = {
         BTN_LEFT, BTN_RIGHT,            /* d-pad left, right */
@@ -679,11 +686,14 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id
         input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
 
         /* set up buttons */
-        for (i = 0; xpad_btn[i] >= 0; i++)
-                set_bit(xpad_btn[i], input_dev->keybit);
+        for (i = 0; xpad_common_btn[i] >= 0; i++)
+                set_bit(xpad_common_btn[i], input_dev->keybit);
         if (xpad->xtype == XTYPE_XBOX360)
                 for (i = 0; xpad360_btn[i] >= 0; i++)
                         set_bit(xpad360_btn[i], input_dev->keybit);
+        else
+                for (i = 0; xpad_btn[i] >= 0; i++)
+                        set_bit(xpad_btn[i], input_dev->keybit);
         if (xpad->dpad_mapping == MAP_DPAD_TO_BUTTONS)
                 for (i = 0; xpad_btn_pad[i] >= 0; i++)
                         set_bit(xpad_btn_pad[i], input_dev->keybit);