Commit 2e146392 authored Jun 11, 2009 by Fabian Godehardt Committed by Linus Torvalds Jun 11, 2009

imx: serial: be sure to stop xmit upon shutdown



needed to avoid continued transmission by hardware
while software already shuts down, which might
cause dangling characters to show up in hardware
queues when restarting the device.

Signed-off-by: Fabian Godehardt <fg@emlix.com>
Signed-off-by: Oskar Schirmer <os@emlix.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 97775731

drivers/serial/imx.c

+4 −0

Original line number	Original line	Diff line number	Diff line
	@@ -634,6 +634,10 @@ static void imx_shutdown(struct uart_port *port)
	struct imx_port sport = (struct imx_port )port;		struct imx_port sport = (struct imx_port )port;
	unsigned long temp;		unsigned long temp;

			temp = readl(sport->port.membase + UCR2);
			temp &= ~(UCR2_TXEN);
			writel(temp, sport->port.membase + UCR2);

	/*		/*
	* Stop our timer.		* Stop our timer.
	*/		*/