HID: roccat: fix special button support

Added new data and changed workaround for abnormal button behaviour
according to new gained knowledge about Roccat Kone device.

Signed-off-by: Stefan Achatz <erazor_de@users.sourceforge.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 6 insertions, 5 deletions

diff --git a/drivers/hid/hid-roccat-kone.c b/drivers/hid/hid-roccat-kone.c
index a41df9ab2877..5d9ced0defa5 100644
--- a/drivers/hid/hid-roccat-kone.c
+++ b/drivers/hid/hid-roccat-kone.c
@@ -928,14 +928,15 @@ static int kone_raw_event(struct hid_device *hdev, struct hid_report *report,
                 return 0;
 
         /*
-         * Firmware 1.38 introduced new behaviour for tilt buttons.
-         * Pressed tilt button is reported in each movement event.
+         * Firmware 1.38 introduced new behaviour for tilt and special buttons.
+         * Pressed button is reported in each movement event.
          * Workaround sends only one event per press.
          */
-        if (kone->last_tilt_state == event->tilt)
-                event->tilt = 0;
+        if (memcmp(&kone->last_mouse_event.tilt, &event->tilt, 5))
+                memcpy(&kone->last_mouse_event, event,
+                                sizeof(struct kone_mouse_event));
         else
-                kone->last_tilt_state = event->tilt;
+                memset(&event->tilt, 0, 5);
 
         /*
          * handle special events and keep actual profile and dpi values