UART_MCR_OUT1
mcr |= UART_MCR_OUT1;
mcr |= UART_MCR_OUT1;
if (mcr & UART_MCR_OUT1)
writeb(UART_MCR_OUT1, p + UART_MCR);
serial8250_out_MCR(up, UART_MCR_OUT1 | UART_MCR_OUT2);
mcr |= UART_MCR_OUT1;
old_mcr &= ~(UART_MCR_LOOP | UART_MCR_OUT2 | UART_MCR_OUT1 |
mcr |= UART_MCR_OUT1;
mcr |= UART_MCR_OUT1;
(ctrl & UART_MCR_OUT1 ? TIOCM_OUT1 : 0) |
priv->mcr |= UART_MCR_OUT1;
priv->mcr &= ~UART_MCR_OUT1;