serial: mxs-auart: clean get_mctrl and set_mctrl
Russell King:
The only thing which the .get_mctrl method is supposed to do is
to return the state of the /input/ lines, which are CTS, DCD, DSR, RI.
The output line state is stored in port->mctrl, and is added to
the returned value by serial_core when it's required.
RTS output state should not be returned from the .get_mctrl method.
This patch removes ctrl variable from mxs_auart_port
and removes useless reading back RTS line.
The ctrl variable in mxs_auart_port duplicated mctrl,
member of uart_port structure in serial_core.h.
The removed code from mxs_auart_set_mctrl() and mxs_auart_get_mctrl
duplicated uart_update_mctrl() and uart_tiocmget()
in serial_core.c.
Signed-off-by: Janusz Uzycki <j.uzycki@elproma.com.pl>
Reviewed-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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