From mboxrd@z Thu Jan 1 00:00:00 1970 From: mpa@pengutronix.de (Markus Pargmann) Date: Thu, 30 May 2013 15:47:04 +0200 Subject: [PATCH] serial/imx: disable hardware flow control at startup Message-ID: <1369921624-5595-1-git-send-email-mpa@pengutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Lucas Stach We only want to enable hardware flow control if RTS/CTS pins are connected. Signed-off-by: Lucas Stach Signed-off-by: Markus Pargmann --- drivers/tty/serial/imx.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 147c9e1..8cdfbd3 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -761,6 +761,8 @@ static int imx_startup(struct uart_port *port) temp = readl(sport->port.membase + UCR2); temp |= (UCR2_RXEN | UCR2_TXEN); + if (!sport->have_rtscts) + temp |= UCR2_IRTS; writel(temp, sport->port.membase + UCR2); if (USE_IRDA(sport)) { -- 1.8.2.1