Commit 7e2fb5aa authored Dec 09, 2014 by Jiada Wang Committed by Greg Kroah-Hartman Jan 09, 2015

serial: imx: Fix issue in software flow control



After send out x_char in UART driver, x_char needs to be cleared
by UART driver itself, otherwise data in TXFIFO can no longer be
sent out.
Also tx counter needs to be increased to keep track of correct
number of transmitted data.

Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 6f026d6b

drivers/tty/serial/imx.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -471,6 +471,8 @@ static inline void imx_transmit_buffer(struct imx_port *sport)
		if (sport->port.x_char) {
		/* Send next char */
		writel(sport->port.x_char, sport->port.membase + URTX0);
		sport->port.icount.tx++;
		sport->port.x_char = 0;
		return;
		}

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