• David Brownell's avatar
    usb gadget: use new serial core · a7707adf
    David Brownell authored
    Teach "gadget serial" to use the new abstracted (and bugfixed) TTY glue,
    and remove all the orignal tangled-up code.  Update the documentation
    accordingly.  This is a net object code shrink and cleanup; it should
    make it a lot easier to see how the TTY glue should accomodate updates
    to the TTY layer, be bugfixed, etc.
    
    Notable behavior changes include:  it can now support getty even when
    there's no USB connection; it fits properly into the mdev/udev world;
    and RX handling is better (throttling works, and low latency).
    
    Configurations with scripts setting up the /dev/ttygserial device node
    (with "experimental" major number) may want to change that to be a
    symlink pointing to the /dev/ttyGS0 file, as a migration aid; else,
    just switch entirely over to mdev/udev.
    Signed-off-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
    a7707adf
serial.c 27.6 KB