[PATCH libinput] Added missing button range for pad on CTH-680

[Peter Hutterer]

From: Sakse Dalum <s at srq.re>

This device has BTN_LEFT, BTN_RIGHT, BTN_FORWARD and BTN_BACK, add the
missing range to the pad init function.

https://bugs.freedesktop.org/show_bug.cgi?id=99785

Signed-off-by: Peter Hutterer <peter.hutterer at who-t.net>
---
 src/evdev-tablet-pad.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/evdev-tablet-pad.c b/src/evdev-tablet-pad.c
index bed43b6..6be53b5 100644
--- a/src/evdev-tablet-pad.c
+++ b/src/evdev-tablet-pad.c
@@ -542,6 +542,11 @@ pad_init_buttons(struct pad_dispatch *pad,
 			pad->button_map[code] = map++;
 	}
 
+	for (code = BTN_LEFT; code < BTN_LEFT + 7; code++) {
+		if (libevdev_has_event_code(device->evdev, EV_KEY, code))
+			pad->button_map[code] = map++;
+	}
+
 	pad->nbuttons = map;
 }
 
-- 
2.11.1