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Message-ID: <1400819575-20435-2-git-send-email-b32955@freescale.com> Date: Fri, 23 May 2014 12:32:54 +0800 From: Huang Shijie <b32955@...escale.com> To: <gregkh@...uxfoundation.org> CC: <linux-serial@...r.kernel.org>, <linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>, Huang Shijie <b32955@...escale.com> Subject: [PATCH 2/2] 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@...escale.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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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