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Commit 6ac1b91f authored by Michal Simek's avatar Michal Simek Committed by Greg Kroah-Hartman
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serial: uartps: Enable automatic flow control 



Enable automatic flow control which should ensure that there is no
mainteinance in connection for zcu100 BT case.

Signed-off-by: default avatarMichal Simek <michal.simek@xilinx.com>
Acked-by: default avatarNava kishore Manne <navam@xilinx.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent bed25ac0

drivers/tty/serial/xilinx_uartps.c

+4 −5
Original line number Diff line number Diff line
@@ -1006,13 +1006,12 @@ static void cdns_uart_set_mctrl(struct uart_port *port, unsigned int mctrl) 
	val = readl(port->membase + CDNS_UART_MODEMCR);

	mode_reg = readl(port->membase + CDNS_UART_MR);



	val &= ~(CDNS_UART_MODEMCR_RTS | CDNS_UART_MODEMCR_DTR);

	val &= ~(CDNS_UART_MODEMCR_RTS | CDNS_UART_MODEMCR_DTR |

		 CDNS_UART_MODEMCR_FCM);

	mode_reg &= ~CDNS_UART_MR_CHMODE_MASK;



	if (mctrl & TIOCM_RTS)

		val |= CDNS_UART_MODEMCR_RTS;

	if (mctrl & TIOCM_DTR)

		val |= CDNS_UART_MODEMCR_DTR;

	if (mctrl & TIOCM_RTS || mctrl & TIOCM_DTR)

		val |= CDNS_UART_MODEMCR_FCM;

	if (mctrl & TIOCM_LOOP)

		mode_reg |= CDNS_UART_MR_CHMODE_L_LOOP;

	else