• Jason Gerecke's avatar
    HID: introduce hid_is_using_ll_driver · fc2237a7
    Jason Gerecke authored
    Although HID itself is transport-agnostic, occasionally a driver may
    want to interact with the low-level transport that a device is connected
    through. To do this, we need to know what kind of bus is in use. The
    first guess may be to look at the 'bus' field of the 'struct hid_device',
    but this field may be emulated in some cases (e.g. uhid).
    
    More ideally, we can check which ll_driver a device is using. This
    function introduces a 'hid_is_using_ll_driver' function and makes the
    'struct hid_ll_driver' of the four most common transports accessible
    through hid.h.
    Signed-off-by: default avatarJason Gerecke <jason.gerecke@wacom.com>
    Acked-By: default avatarBenjamin Tissoires <benjamin.tissoires@redhat.com>
    Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
    fc2237a7
core.c 38.7 KB