• Jason Gerecke's avatar
    HID: wacom: Ensure bootloader PID is usable in hidraw mode · 1db1f392
    Jason Gerecke authored
    Some Wacom devices have a special "bootloader" mode that is used for
    firmware flashing. When operating in this mode, the device cannot be
    used for input, and the HID descriptor is not able to be processed by
    the driver. The driver generates an "Unknown device_type" warning and
    then returns an error code from wacom_probe(). This is a problem because
    userspace still needs to be able to interact with the device via hidraw
    to perform the firmware flash.
    
    This commit adds a non-generic device definition for 056a:0094 which
    is used when devices are in "bootloader" mode. It marks the devices
    with a special BOOTLOADER type that is recognized by wacom_probe() and
    wacom_raw_event(). When we see this type we ensure a hidraw device is
    created and otherwise keep our hands off so that userspace is in full
    control.
    Signed-off-by: default avatarJason Gerecke <jason.gerecke@wacom.com>
    Tested-by: default avatarTatsunosuke Tobita <tatsunosuke.tobita@wacom.com>
    Cc: <stable@vger.kernel.org>
    Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
    1db1f392
wacom_wac.h 11.6 KB