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Subject[PATCH 2/2] serial: imx: disable the receiver ready interrupt for imx_stop_rx
Date
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>
---
drivers/tty/serial/imx.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index ed6cdf7..6026101 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -440,6 +440,10 @@ 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);
}

/*
--
1.7.8


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