Input: joydev - blacklist digitizers

BTN_TOUCH is not set by the wacom driver which causes it to be handled by the
joydev driver while the resulting device is broken. This causes problems with
applications that try to use a joystick device.

BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/300143
Signed-off-by: Tim Cole <tim.cole@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Tim Gardner <tim.gardner@canonical.com>
Acked-by: Amit Kucheria <amit.kucheria@canonical.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

diff --git a/drivers/input/joydev.c b/drivers/input/joydev.c
index 4224f01..012a5e7 100644 (file)
--- a/drivers/input/joydev.c
+++ b/drivers/input/joydev.c
@@ -843,7 +843,13 @@ static const struct input_device_id joydev_blacklist[] = {
                                INPUT_DEVICE_ID_MATCH_KEYBIT,
                .evbit = { BIT_MASK(EV_KEY) },
                .keybit = { [BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH) },
-       },      /* Avoid itouchpads, touchscreens and tablets */
+       },      /* Avoid itouchpads and touchscreens */
+       {
+               .flags = INPUT_DEVICE_ID_MATCH_EVBIT |
+                               INPUT_DEVICE_ID_MATCH_KEYBIT,
+               .evbit = { BIT_MASK(EV_KEY) },
+               .keybit = { [BIT_WORD(BTN_DIGI)] = BIT_MASK(BTN_DIGI) },
+       },      /* Avoid tablets, digitisers and similar devices */
        { }     /* Terminating entry */
 };