usb: serial: Remove unused tty->hw_stopped

The tty core does not test tty->hw_stopped; remove from drivers
which don't test it themselves.
Acked-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/serial/digi_acceleport.c

@@ -834,7 +834,6 @@ static void digi_set_termios(struct tty_struct *tty,
 			arg |= DIGI_OUTPUT_FLOW_CONTROL_CTS;
 		} else {
 			arg &= ~DIGI_OUTPUT_FLOW_CONTROL_CTS;
-			tty->hw_stopped = 0;
 		}
 
 		buf[i++] = DIGI_CMD_SET_OUTPUT_FLOW_CONTROL;
@@ -1500,15 +1499,11 @@ static int digi_read_oob_callback(struct urb *urb)
 			if (val & DIGI_READ_INPUT_SIGNALS_CTS) {
 				priv->dp_modem_signals |= TIOCM_CTS;
 				/* port must be open to use tty struct */
-				if (rts) {
-					tty->hw_stopped = 0;
+				if (rts)
 					tty_port_tty_wakeup(&port->port);
-				}
 			} else {
 				priv->dp_modem_signals &= ~TIOCM_CTS;
 				/* port must be open to use tty struct */
-				if (rts)
-					tty->hw_stopped = 1;
 			}
 			if (val & DIGI_READ_INPUT_SIGNALS_DSR)
 				priv->dp_modem_signals |= TIOCM_DSR;

drivers/usb/serial/io_ti.c

@@ -1456,12 +1456,8 @@ static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
 	tty = tty_port_tty_get(&edge_port->port->port);
 	/* handle CTS flow control */
 	if (tty && C_CRTSCTS(tty)) {
-		if (msr & EDGEPORT_MSR_CTS) {
-			tty->hw_stopped = 0;
+		if (msr & EDGEPORT_MSR_CTS)
 			tty_wakeup(tty);
-		} else {
-			tty->hw_stopped = 1;
-		}
 	}
 	tty_kref_put(tty);
 }
@@ -2177,7 +2173,6 @@ static void change_port_settings(struct tty_struct *tty,
 		dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
 	} else {
 		dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
-		tty->hw_stopped = 0;
 		restart_read(edge_port);
 	}
 

drivers/usb/serial/ti_usb_3410_5052.c

@@ -773,7 +773,6 @@ static void ti_set_termios(struct tty_struct *tty,
 			config->wFlags |= TI_UART_ENABLE_RTS_IN;
 		config->wFlags |= TI_UART_ENABLE_CTS_OUT;
 	} else {
-		tty->hw_stopped = 0;
 		ti_restart_read(tport, tty);
 	}
 
@@ -1291,12 +1290,8 @@ static void ti_handle_new_msr(struct ti_port *tport, __u8 msr)
 	/* handle CTS flow control */
 	tty = tty_port_tty_get(&tport->tp_port->port);
 	if (tty && C_CRTSCTS(tty)) {
-		if (msr & TI_MSR_CTS) {
-			tty->hw_stopped = 0;
+		if (msr & TI_MSR_CTS)
 			tty_wakeup(tty);
-		} else {
-			tty->hw_stopped = 1;
-		}
 	}
 	tty_kref_put(tty);
 }