imx_set_termios(): stopping receiver and transmitter does harm when something that doesn't touch transmission format/rate changes, such as RTS/CTS handshake. OTOH, it does no good on baud rate or format change, as synchronization on upper-level protocols is still required to do it right. Therefore, just stop doing it. Signed-off-by: Sergey Organov <sorganov@xxxxxxxxx> --- drivers/tty/serial/imx.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index fb82fc6..469a0c3 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -1643,9 +1643,6 @@ imx_uart_set_termios(struct uart_port *port, struct ktermios *termios, old_ucr2 = imx_uart_readl(sport, UCR2); imx_uart_writel(sport, old_ucr2 & ~UCR2_ATEN, UCR2); - /* then, disable everything */ - imx_uart_writel(sport, old_ucr2 & ~(UCR2_TXEN | UCR2_RXEN | UCR2_ATEN), UCR2); - /* custom-baudrate handling */ div = sport->port.uartclk / (baud * 16); if (baud == 38400 && quot != div) -- 2.10.0.1.g57b01a3
