On Sat, Sep 27, 2014 at 11:46:34AM +0200, Janusz Uzycki wrote:

The ctrl variable duplicated mctrl, member of uart_port structure
in serial_core.h.
The code duplicated uart_update_mctrl() and uart_tiocmget()
in serial_core.c.
mxs_auart_get_mctrl() reads back RTS line. It could be removed too
but not sure.

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.

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