n_tty: Factor tty->closing receive_buf() into separate fn

Convert to modal receive_buf() processing; factor receive char
processing when tty->closing into n_tty_receive_buf_closing().

Note that EXTPROC when ISTRIP or IUCLC is set continues to be
handled by n_tty_receive_char().

Signed-off-by: Peter Hurley <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
1 file changed