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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: Huang Shijie <b32955@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1161,15 +1161,6 @@ static int imx_startup(struct uart_port *port)
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temp |= UCR2_IRTS;
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writel(temp, sport->port.membase + UCR2);
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if (USE_IRDA(sport)) {
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/* clear RX-FIFO */
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int i = 64;
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while ((--i > 0) &&
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(readl(sport->port.membase + URXD0) & URXD_CHARRDY)) {
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barrier();
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}
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}
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if (!is_imx1_uart(sport)) {
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temp = readl(sport->port.membase + UCR3);
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temp |= IMX21_UCR3_RXDMUXSEL | UCR3_ADNIMP;
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