HID: multitouch: force BTN_STYLUS for pen devices

The "tablet" udev rule relies on BTN_STYLUS to be set.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 55551746d235..aceaf6c08878 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -418,6 +418,9 @@ static void mt_pen_input_configured(struct hid_device *hdev,
                 mt_free_input_name(hi);
                 hi->input->name = name;
         }
+
+        /* force BTN_STYLUS to allow tablet matching in udev */
+        __set_bit(BTN_STYLUS, hi->input->keybit);
 }
 
 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,