HID: wacom: fix bit shift for Cintiq Companion 2

commit 693c3dab4e50403f91bca4b52fc6d8562a3180f6 upstream.

The bit indicating BTN_6 on this device is overshifted
by 2 bits, resulting in the incorrect button being
reported.

Also fix copy-paste mistake in comments.

Signed-off-by: Aaron Armstrong Skomra <aaron.skomra@wacom.com>
Reviewed-by: Ping Cheng <ping.cheng@wacom.com>
Link: https://github.com/linuxwacom/xf86-input-wacom/issues/71
Fixes: c7f0522a1ad1 ("HID: wacom: Slim down wacom_intuos_pad processing")
Cc: <stable@vger.kernel.org> # v4.5+
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c
index b1ad378..6c3bf88 100644 (file)
--- a/drivers/hid/wacom_wac.c
+++ b/drivers/hid/wacom_wac.c
@@ -529,14 +529,14 @@ static int wacom_intuos_pad(struct wacom_wac *wacom)
                 */
                buttons = (data[4] << 1) | (data[3] & 0x01);
        } else if (features->type == CINTIQ_COMPANION_2) {
-               /* d-pad right  -> data[4] & 0x10
-                * d-pad up     -> data[4] & 0x20
-                * d-pad left   -> data[4] & 0x40
-                * d-pad down   -> data[4] & 0x80
-                * d-pad center -> data[3] & 0x01
+               /* d-pad right  -> data[2] & 0x10
+                * d-pad up     -> data[2] & 0x20
+                * d-pad left   -> data[2] & 0x40
+                * d-pad down   -> data[2] & 0x80
+                * d-pad center -> data[1] & 0x01
                 */
                buttons = ((data[2] >> 4) << 7) |
-                         ((data[1] & 0x04) << 6) |
+                         ((data[1] & 0x04) << 4) |
                          ((data[2] & 0x0F) << 2) |
                          (data[1] & 0x03);
        } else if (features->type >= INTUOS5S && features->type <= INTUOSPL) {