Commit e881d3f3 authored Mar 24, 2016 by Uwe Kleine-König Committed by Greg Kroah-Hartman Apr 30, 2016

serial: imx: fix polarity of RI



When in DTE mode, the bit USR2_RIIN is active low. So invert the logic
accordingly.

Fixes: 90ebc483 ("serial: imx: repair and complete handshaking")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 06ed48b7

drivers/tty/serial/imx.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -800,8 +800,8 @@ static unsigned int imx_get_hwmctrl(struct imx_port *sport)
		if (!(usr1 & USR2_DCDIN))
		tmp \|= TIOCM_CAR;

		/* in DCE mode RIIN is always 0 */
		if (readl(sport->port.membase + USR2) & USR2_RIIN)
		if (sport->dte_mode)
		if (!(readl(sport->port.membase + USR2) & USR2_RIIN))
		tmp \|= TIOCM_RI;

		return tmp;