Revert "tty/serial: Prevent drop of DCD on suspend for Tegra UARTs"

This reverts commit 9636b755.

It wasn't supposed to be applied, thanks to Doug for letting me know.

Cc: Doug Anderson <dianders@chromium.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/tty/serial/8250.c

@@ -308,8 +308,6 @@ static const struct serial8250_config uart_config[] = {
 		.fcr		= UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_01 |
 				  UART_FCR_T_TRIG_01,
 		.flags		= UART_CAP_FIFO | UART_CAP_RTOIE,
-		.mcr_mask	= ~UART_MCR_DTR,
-		.mcr_force	= UART_MCR_DTR,
 	},
 	[PORT_XR17D15X] = {
 		.name		= "XR17D15X",
@@ -1231,10 +1229,6 @@ static void autoconfig(struct uart_8250_port *up, unsigned int probeflags)
 	up->port.fifosize = uart_config[up->port.type].fifo_size;
 	up->capabilities = uart_config[up->port.type].flags;
 	up->tx_loadsz = uart_config[up->port.type].tx_loadsz;
-	if (!ALPHA_KLUDGE_MCR) {
-		up->mcr_mask = uart_config[up->port.type].mcr_mask;
-		up->mcr_force = uart_config[up->port.type].mcr_force;
-	}
 
 	if (up->port.type == PORT_UNKNOWN)
 		goto out;
@@ -1993,10 +1987,6 @@ static int serial8250_startup(struct uart_port *port)
 	up->port.fifosize = uart_config[up->port.type].fifo_size;
 	up->tx_loadsz = uart_config[up->port.type].tx_loadsz;
 	up->capabilities = uart_config[up->port.type].flags;
-	if (!ALPHA_KLUDGE_MCR) {
-		up->mcr_mask = uart_config[up->port.type].mcr_mask;
-		up->mcr_force = uart_config[up->port.type].mcr_force;
-	}
 	up->mcr = 0;
 
 	if (up->port.iotype != up->cur_iotype)
@@ -2803,10 +2793,6 @@ serial8250_init_fixed_type_port(struct uart_8250_port *up, unsigned int type)
 	up->port.fifosize = uart_config[type].fifo_size;
 	up->capabilities = uart_config[type].flags;
 	up->tx_loadsz = uart_config[type].tx_loadsz;
-	if (!ALPHA_KLUDGE_MCR) {
-		up->mcr_mask = uart_config[type].mcr_mask;
-		up->mcr_force = uart_config[type].mcr_force;
-	}
 }
 
 static void __init

drivers/tty/serial/8250.h

@@ -35,8 +35,6 @@ struct serial8250_config {
 	unsigned short	tx_loadsz;
 	unsigned char	fcr;
 	unsigned int	flags;
-	unsigned char	mcr_mask;
-	unsigned char	mcr_force;
 };
 
 #define UART_CAP_FIFO	(1 << 8)	/* UART has FIFO */