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    Subject[PATCH 4.19 011/148] Input: restore EV_ABS ABS_RESERVED
    Date
    4.19-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    [ Upstream commit c201e3808e0e4be9b98d192802085a9f491bd80c ]

    ABS_RESERVED was added in d9ca1c990a7 and accidentally removed as part of
    ffe0e7cf290f5c9 when the high-resolution scrolling code was removed.

    Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
    Reviewed-by: Martin Kepplinger <martin.kepplinger@ginzinger.com>
    Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
    Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
    Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    include/uapi/linux/input-event-codes.h | 9 +++++++++
    1 file changed, 9 insertions(+)

    diff --git a/include/uapi/linux/input-event-codes.h b/include/uapi/linux/input-event-codes.h
    index 53fbae27b280..61a5799b440b 100644
    --- a/include/uapi/linux/input-event-codes.h
    +++ b/include/uapi/linux/input-event-codes.h
    @@ -744,6 +744,15 @@

    #define ABS_MISC 0x28

    +/*
    + * 0x2e is reserved and should not be used in input drivers.
    + * It was used by HID as ABS_MISC+6 and userspace needs to detect if
    + * the next ABS_* event is correct or is just ABS_MISC + n.
    + * We define here ABS_RESERVED so userspace can rely on it and detect
    + * the situation described above.
    + */
    +#define ABS_RESERVED 0x2e
    +
    #define ABS_MT_SLOT 0x2f /* MT slot being modified */
    #define ABS_MT_TOUCH_MAJOR 0x30 /* Major axis of touching ellipse */
    #define ABS_MT_TOUCH_MINOR 0x31 /* Minor axis (omit if circular) */
    --
    2.19.1


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