Merge tag 'tty-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial driver update from Greg Kroah-Hartman:
 "Here's the big tty/serial driver merge request for 3.10-rc1

  Once again, Jiri has a number of TTY driver fixes and cleanups, and
  Peter Hurley came through with a bunch of ldisc fixes that resolve a
  number of reported issues.  There are some other serial driver
  cleanups as well.

  All of these have been in the linux-next tree for a while"

* tag 'tty-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (117 commits)
  tty/serial/sirf: fix MODULE_DEVICE_TABLE
  serial: mxs: drop superfluous {get|put}_device
  serial: mxs: fix buffer overflow
  ARM: PL011: add support for extended FIFO-size of PL011-r1p5
  serial_core.c: add put_device() after device_find_child()
  tty: Fix unsafe bit ops in tty_throttle_safe/unthrottle_safe
  serial: sccnxp: Replace pdata.init/exit with regulator API
  serial: sccnxp: Do not override device name
  TTY: pty, fix compilation warning
  TTY: rocket, fix compilation warning
  TTY: ircomm: fix DTR being raised on hang up
  TTY: synclinkmp: fix DTR being raised on hang up
  TTY: synclink_gt: fix DTR being raised on hang up
  TTY: synclink: fix DTR being raised on hang up
  serial: 8250_dw: Fix the stub for dw8250_probe_acpi()
  serial: 8250_dw: Convert to devm_ioremap()
  serial: 8250_dw: Set port capabilities based on CPR register
  serial: 8250_dw: Let ACPI code extract the DMA client info
  serial: 8250_dw: Support clk framework also with ACPI
  serial: 8250_dw: Enable runtime PM
  ...

1 files changed, 2 insertions, 15 deletions

diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c
index 75f125ddb0c..ef3a7d5eaab 100644
--- a/drivers/usb/serial/quatech2.c
+++ b/drivers/usb/serial/quatech2.c
@@ -116,7 +116,6 @@ struct qt2_serial_private {
 };
 
 struct qt2_port_private {
-	bool is_open;
 	u8   device_port;
 
 	spinlock_t urb_lock;
@@ -397,7 +396,6 @@ static int qt2_open(struct tty_struct *tty, struct usb_serial_port *port)
 		return status;
 	}
 
-	port_priv->is_open = true;
 	port_priv->device_port = (u8) device_port;
 
 	if (tty)
@@ -417,8 +415,6 @@ static void qt2_close(struct usb_serial_port *port)
 	serial = port->serial;
 	port_priv = usb_get_serial_port_data(port);
 
-	port_priv->is_open = false;
-
 	spin_lock_irqsave(&port_priv->urb_lock, flags);
 	usb_kill_urb(port_priv->write_urb);
 	port_priv->urb_in_use = false;
@@ -664,9 +660,7 @@ void qt2_process_read_urb(struct urb *urb)
 						 __func__);
 					break;
 				}
-
-				if (port_priv->is_open)
-					tty_flip_buffer_push(&port->port);
+				tty_flip_buffer_push(&port->port);
 
 				newport = *(ch + 3);
 
@@ -709,8 +703,7 @@ void qt2_process_read_urb(struct urb *urb)
 		tty_insert_flip_string(&port->port, ch, 1);
 	}
 
-	if (port_priv->is_open)
-		tty_flip_buffer_push(&port->port);
+	tty_flip_buffer_push(&port->port);
 }
 
 static void qt2_write_bulk_callback(struct urb *urb)
@@ -910,12 +903,6 @@ static void qt2_break_ctl(struct tty_struct *tty, int break_state)
 
 	port_priv = usb_get_serial_port_data(port);
 
-	if (!port_priv->is_open) {
-		dev_err(&port->dev,
-			"%s - port is not open\n", __func__);
-		return;
-	}
-
 	val = (break_state == -1) ? 1 : 0;
 
 	status = qt2_control_msg(port->serial->dev, QT2_BREAK_CONTROL,