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Commit 8eccd0cd authored by Huang Shijie's avatar Huang Shijie Committed by Greg Kroah-Hartman
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serial: imx: remove the redundant code 



In the imx_startup(), we will reset the uart port which will reset all
the FIFOs, including the URXD.

So the code to clear the RX FIFO is redundant. Just remove it.

Signed-off-by: default avatarHuang Shijie <b32955@freescale.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 772f8991

drivers/tty/serial/imx.c

+0 −9
Original line number Diff line number Diff line
@@ -1161,15 +1161,6 @@ static int imx_startup(struct uart_port *port) 
		temp |= UCR2_IRTS;

	writel(temp, sport->port.membase + UCR2);



	if (USE_IRDA(sport)) {

		/* clear RX-FIFO */

		int i = 64;

		while ((--i > 0) &&

			(readl(sport->port.membase + URXD0) & URXD_CHARRDY)) {

			barrier();

		}

	}



	if (!is_imx1_uart(sport)) {

		temp = readl(sport->port.membase + UCR3);

		temp |= IMX21_UCR3_RXDMUXSEL | UCR3_ADNIMP;