From 8f50b1ea88c2f691fab8067551852db5a69e5b7e Mon Sep 17 00:00:00 2001 From: Fugang Duan Date: Fri, 17 Jul 2015 11:43:31 +0800 Subject: MLK-11258 tty: serial: imx: disable overrun interrupt during uart port shutdown Also disable rx fifo overrun interrupt during uart port shutdown. Signed-off-by: Fugang Duan (cherry picked from commit: 39eb703f6c9f9359723f3fa22e798b1d21b44c67) --- drivers/tty/serial/imx.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index e75e298c8478..65868f2c2fbb 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -469,12 +469,14 @@ static void imx_stop_rx(struct uart_port *port) } } - temp = readl(sport->port.membase + UCR2); - writel(temp & ~UCR2_RXEN, sport->port.membase + UCR2); - - /* disable the `Receiver Ready Interrrupt` */ + /* disable the Receiver Ready and overrun Interrrupt */ temp = readl(sport->port.membase + UCR1); writel(temp & ~UCR1_RRDYEN, sport->port.membase + UCR1); + temp = readl(sport->port.membase + UCR4); + writel(temp & ~UCR4_OREN, sport->port.membase + UCR4); + + temp = readl(sport->port.membase + UCR2); + writel(temp & ~UCR2_RXEN, sport->port.membase + UCR2); } /* -- cgit v1.2.3