HID: magicmouse: Do not set BTN_MOUSE on double report

Under certain conditions the Magic Trackpad can group 2 reports in a
single packet. The packet is split and the raw event function is
invoked recursively for each part.

However, after processing each part, the BTN_MOUSE status is updated,
sending multiple click events. [1]

Return after processing double reports to avoid this issue.

Link: https://gitlab.freedesktop.org/libinput/libinput/-/issues/811
Fixes: a462230e16ac ("HID: magicmouse: enable Magic Trackpad support")
Reported-by: Nulo <git@nulo.in>
Signed-off-by: José Expósito <jose.exposito89@gmail.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Link: https://lore.kernel.org/r/20221009182747.90730-1-jose.exposito89@gmail.com

diff --git a/drivers/hid/hid-magicmouse.c b/drivers/hid/hid-magicmouse.c
index 664a624..c9c968d 100644 (file)
--- a/drivers/hid/hid-magicmouse.c
+++ b/drivers/hid/hid-magicmouse.c
@@ -480,7 +480,7 @@ static int magicmouse_raw_event(struct hid_device *hdev,
                magicmouse_raw_event(hdev, report, data + 2, data[1]);
                magicmouse_raw_event(hdev, report, data + 2 + data[1],
                        size - 2 - data[1]);
-               break;
+               return 0;
        default:
                return 0;
        }