summaryrefslogtreecommitdiff
path: root/drivers/tty
diff options
context:
space:
mode:
authorHuang Shijie <b32955@freescale.com>2014-05-23 08:32:54 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-05-28 23:41:32 +0400
commit85878399e7bf14bc36d191d3a0de54b2a40f29e7 (patch)
treea3c65e632dc37f00b41ff13faaf8f33224ef8618 /drivers/tty
parente2f2786606d49d3aae545c61c04757a64cf7e5f0 (diff)
downloadlinux-85878399e7bf14bc36d191d3a0de54b2a40f29e7.tar.xz
serial: imx: disable the receiver ready interrupt for imx_stop_rx
This patch disables the receiver ready interrupt for imx_stop_rx. It reduces the interrupt numbers when the uart is going to close or suspend. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/imx.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index cdaeeeee6cec..3b706add81a9 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -439,6 +439,10 @@ 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` */
+ temp = readl(sport->port.membase + UCR1);
+ writel(temp & ~UCR1_RRDYEN, sport->port.membase + UCR1);
}
/*