From 0d5b16639523970db001e6af298e360782f4d89a Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 5 Oct 2012 23:48:28 +0100 Subject: [PATCH] SERIAL: omap: allow hardware assisted rts/cts modes to be disabled There is nothing which clears the auto RTS/CTS bits, so once hardware flow control gets enabled, there's no possibility to disable it. So, clear these bits when CRTSCTS is cleared. Signed-off-by: Russell King --- drivers/tty/serial/omap-serial.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c index 6d3d26a607b9..b6a1925dfc92 100644 --- a/drivers/tty/serial/omap-serial.c +++ b/drivers/tty/serial/omap-serial.c @@ -921,6 +921,13 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios, serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); serial_out(up, UART_MCR, up->mcr | UART_MCR_RTS); serial_out(up, UART_LCR, cval); + } else { + /* Disable AUTORTS and AUTOCTS */ + up->efr &= ~(UART_EFR_CTS | UART_EFR_RTS); + + serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); + serial_out(up, UART_EFR, up->efr); + serial_out(up, UART_LCR, cval); } serial_omap_set_mctrl(&up->port, up->port.mctrl); -- 2.39.2