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>
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index cdaeeee..3b706ad 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -439,6 +439,10 @@
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);
}
/*