• Mika Westerberg's avatar
    thunderbolt: Assign remote for both ports in case of dual link · dfe40ca4
    Mika Westerberg authored
    Currently the driver only assigns remote port for the primary port if in
    case of dual link. This makes things such as walking from one port to
    another more complex than necessary because the code needs to change
    from secondary to primary port if the path that is established is
    created using secondary links.
    
    In order to always assign both remote pointers we need to prevent the
    scanning code from following the secondary link. Failing to do that
    might cause problems as the same switch may be enumerated twice (or
    removed in case of unplug). Handle that properly by introducing a new
    function tb_port_has_remote() that returns true only for the primary
    port. We also update tb_is_upstream_port() to support both dual link
    ports, make it take const port pointer and move it below
    tb_upstream_port() to keep similar functions close.
    Signed-off-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
    dfe40ca4
icm.c 49.9 KB