Merge branch 'origin' into devel

Conflicts:
	sound/soc/pxa/pxa2xx-i2s.c

13 files changed, 1355 insertions, 184 deletions

diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig
index b361f05cafa..a65f9196b0a 100644
--- a/drivers/usb/serial/Kconfig
+++ b/drivers/usb/serial/Kconfig
@@ -116,14 +116,14 @@ config USB_SERIAL_DIGI_ACCELEPORT
 	  To compile this driver as a module, choose M here: the
 	  module will be called digi_acceleport.
 
-config USB_SERIAL_CP2101
-	tristate "USB CP2101 UART Bridge Controller"
+config USB_SERIAL_CP210X
+	tristate "USB CP210x family of UART Bridge Controllers"
 	help
-	  Say Y here if you want to use a CP2101/CP2102 based USB to RS232
-	  converter.
+	  Say Y here if you want to use a CP2101/CP2102/CP2103 based USB
+	  to RS232 converters.
 
 	  To compile this driver as a module, choose M here: the
-	  module will be called cp2101.
+	  module will be called cp210x.
 
 config USB_SERIAL_CYPRESS_M8
 	tristate "USB Cypress M8 USB Serial Driver"
@@ -472,6 +472,15 @@ config USB_SERIAL_OTI6858
 	  To compile this driver as a module, choose M here: the
 	  module will be called oti6858.
 
+config USB_SERIAL_QUALCOMM
+	tristate "USB Qualcomm Serial modem"
+	help
+	  Say Y here if you have a Qualcomm USB modem device.  These are
+	  usually wireless cellular modems.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called qcserial.
+
 config USB_SERIAL_SPCP8X5
 	tristate "USB SPCP8x5 USB To Serial Driver"
 	help
@@ -515,6 +524,15 @@ config USB_SERIAL_SIERRAWIRELESS
 	  To compile this driver as a module, choose M here: the
 	  module will be called sierra.
 
+config USB_SERIAL_SYMBOL
+	tristate "USB Symbol Barcode driver (serial mode)"
+	help
+	  Say Y here if you want to use a Symbol USB Barcode device
+	  in serial emulation mode.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called symbolserial.
+
 config USB_SERIAL_TI
 	tristate "USB TI 3410/5052 Serial Driver"
 	help
diff --git a/drivers/usb/serial/Makefile b/drivers/usb/serial/Makefile
index b75be91eb8f..66619beb6cc 100644
--- a/drivers/usb/serial/Makefile
+++ b/drivers/usb/serial/Makefile
@@ -15,7 +15,7 @@ obj-$(CONFIG_USB_SERIAL_AIRCABLE)		+= aircable.o
 obj-$(CONFIG_USB_SERIAL_ARK3116)		+= ark3116.o
 obj-$(CONFIG_USB_SERIAL_BELKIN)			+= belkin_sa.o
 obj-$(CONFIG_USB_SERIAL_CH341)			+= ch341.o
-obj-$(CONFIG_USB_SERIAL_CP2101)			+= cp2101.o
+obj-$(CONFIG_USB_SERIAL_CP210X)			+= cp210x.o
 obj-$(CONFIG_USB_SERIAL_CYBERJACK)		+= cyberjack.o
 obj-$(CONFIG_USB_SERIAL_CYPRESS_M8)		+= cypress_m8.o
 obj-$(CONFIG_USB_SERIAL_DEBUG)			+= usb_debug.o
@@ -45,10 +45,12 @@ obj-$(CONFIG_USB_SERIAL_OPTICON)		+= opticon.o
 obj-$(CONFIG_USB_SERIAL_OPTION)			+= option.o
 obj-$(CONFIG_USB_SERIAL_OTI6858)		+= oti6858.o
 obj-$(CONFIG_USB_SERIAL_PL2303)			+= pl2303.o
+obj-$(CONFIG_USB_SERIAL_QUALCOMM)		+= qcserial.o
 obj-$(CONFIG_USB_SERIAL_SAFE)			+= safe_serial.o
 obj-$(CONFIG_USB_SERIAL_SIEMENS_MPI)		+= siemens_mpi.o
 obj-$(CONFIG_USB_SERIAL_SIERRAWIRELESS)		+= sierra.o
 obj-$(CONFIG_USB_SERIAL_SPCP8X5)		+= spcp8x5.o
+obj-$(CONFIG_USB_SERIAL_SYMBOL)			+= symbolserial.o
 obj-$(CONFIG_USB_SERIAL_TI)			+= ti_usb_3410_5052.o
 obj-$(CONFIG_USB_SERIAL_VISOR)			+= visor.o
 obj-$(CONFIG_USB_SERIAL_WHITEHEAT)		+= whiteheat.o
diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c
index f61e3ca6430..ab4cc277aa6 100644
--- a/drivers/usb/serial/ch341.c
+++ b/drivers/usb/serial/ch341.c
@@ -1,5 +1,7 @@
 /*
  * Copyright 2007, Frank A Kingswood <frank@kingswood-consulting.co.uk>
+ * Copyright 2007, Werner Cornelius <werner@cornelius-consult.de>
+ * Copyright 2009, Boris Hajduk <boris@hajduk.org>
  *
  * ch341.c implements a serial port driver for the Winchiphead CH341.
  *
@@ -21,9 +23,39 @@
 #include <linux/usb/serial.h>
 #include <linux/serial.h>
 
-#define DEFAULT_BAUD_RATE 2400
+#define DEFAULT_BAUD_RATE 9600
 #define DEFAULT_TIMEOUT   1000
 
+/* flags for IO-Bits */
+#define CH341_BIT_RTS (1 << 6)
+#define CH341_BIT_DTR (1 << 5)
+
+/******************************/
+/* interrupt pipe definitions */
+/******************************/
+/* always 4 interrupt bytes */
+/* first irq byte normally 0x08 */
+/* second irq byte base 0x7d + below */
+/* third irq byte base 0x94 + below */
+/* fourth irq byte normally 0xee */
+
+/* second interrupt byte */
+#define CH341_MULT_STAT 0x04 /* multiple status since last interrupt event */
+
+/* status returned in third interrupt answer byte, inverted in data
+   from irq */
+#define CH341_BIT_CTS 0x01
+#define CH341_BIT_DSR 0x02
+#define CH341_BIT_RI  0x04
+#define CH341_BIT_DCD 0x08
+#define CH341_BITS_MODEM_STAT 0x0f /* all bits */
+
+/*******************************/
+/* baudrate calculation factor */
+/*******************************/
+#define CH341_BAUDBASE_FACTOR 1532620800
+#define CH341_BAUDBASE_DIVMAX 3
+
 static int debug;
 
 static struct usb_device_id id_table [] = {
@@ -34,9 +66,12 @@ static struct usb_device_id id_table [] = {
 MODULE_DEVICE_TABLE(usb, id_table);
 
 struct ch341_private {
-	unsigned baud_rate;
-	u8 dtr;
-	u8 rts;
+	spinlock_t lock; /* access lock */
+	wait_queue_head_t delta_msr_wait; /* wait queue for modem status */
+	unsigned baud_rate; /* set baud rate */
+	u8 line_control; /* set line control value RTS/DTR */
+	u8 line_status; /* active status of modem control inputs */
+	u8 multi_status_change; /* status changed multiple since last call */
 };
 
 static int ch341_control_out(struct usb_device *dev, u8 request,
@@ -72,37 +107,28 @@ static int ch341_set_baudrate(struct usb_device *dev,
 {
 	short a, b;
 	int r;
+	unsigned long factor;
+	short divisor;
 
 	dbg("ch341_set_baudrate(%d)", priv->baud_rate);
-	switch (priv->baud_rate) {
-	case 2400:
-		a = 0xd901;
-		b = 0x0038;
-		break;
-	case 4800:
-		a = 0x6402;
-		b = 0x001f;
-		break;
-	case 9600:
-		a = 0xb202;
-		b = 0x0013;
-		break;
-	case 19200:
-		a = 0xd902;
-		b = 0x000d;
-		break;
-	case 38400:
-		a = 0x6403;
-		b = 0x000a;
-		break;
-	case 115200:
-		a = 0xcc03;
-		b = 0x0008;
-		break;
-	default:
+
+	if (!priv->baud_rate)
 		return -EINVAL;
+	factor = (CH341_BAUDBASE_FACTOR / priv->baud_rate);
+	divisor = CH341_BAUDBASE_DIVMAX;
+
+	while ((factor > 0xfff0) && divisor) {
+		factor >>= 3;
+		divisor--;
 	}
 
+	if (factor > 0xfff0)
+		return -EINVAL;
+
+	factor = 0x10000 - factor;
+	a = (factor & 0xff00) | divisor;
+	b = factor & 0xff;
+
 	r = ch341_control_out(dev, 0x9a, 0x1312, a);
 	if (!r)
 		r = ch341_control_out(dev, 0x9a, 0x0f2c, b);
@@ -110,19 +136,18 @@ static int ch341_set_baudrate(struct usb_device *dev,
 	return r;
 }
 
-static int ch341_set_handshake(struct usb_device *dev,
-			       struct ch341_private *priv)
+static int ch341_set_handshake(struct usb_device *dev, u8 control)
 {
-	dbg("ch341_set_handshake(%d,%d)", priv->dtr, priv->rts);
-	return ch341_control_out(dev, 0xa4,
-		~((priv->dtr?1<<5:0)|(priv->rts?1<<6:0)), 0);
+	dbg("ch341_set_handshake(0x%02x)", control);
+	return ch341_control_out(dev, 0xa4, ~control, 0);
 }
 
-static int ch341_get_status(struct usb_device *dev)
+static int ch341_get_status(struct usb_device *dev, struct ch341_private *priv)
 {
 	char *buffer;
 	int r;
 	const unsigned size = 8;
+	unsigned long flags;
 
 	dbg("ch341_get_status()");
 
@@ -134,10 +159,15 @@ static int ch341_get_status(struct usb_device *dev)
 	if (r < 0)
 		goto out;
 
-	/* Not having the datasheet for the CH341, we ignore the bytes returned
-	 * from the device. Return error if the device did not respond in time.
-	 */
-	r = 0;
+	/* setup the private status if available */
+	if (r == 2) {
+		r = 0;
+		spin_lock_irqsave(&priv->lock, flags);
+		priv->line_status = (~(*buffer)) & CH341_BITS_MODEM_STAT;
+		priv->multi_status_change = 0;
+		spin_unlock_irqrestore(&priv->lock, flags);
+	} else
+		r = -EPROTO;
 
 out:	kfree(buffer);
 	return r;
@@ -180,7 +210,7 @@ static int ch341_configure(struct usb_device *dev, struct ch341_private *priv)
 		goto out;
 
 	/* expect 0xff 0xee */
-	r = ch341_get_status(dev);
+	r = ch341_get_status(dev, priv);
 	if (r < 0)
 		goto out;
 
@@ -192,12 +222,12 @@ static int ch341_configure(struct usb_device *dev, struct ch341_private *priv)
 	if (r < 0)
 		goto out;
 
-	r = ch341_set_handshake(dev, priv);
+	r = ch341_set_handshake(dev, priv->line_control);
 	if (r < 0)
 		goto out;
 
 	/* expect 0x9f 0xee */
-	r = ch341_get_status(dev);
+	r = ch341_get_status(dev, priv);
 
 out:	kfree(buffer);
 	return r;
@@ -216,9 +246,10 @@ static int ch341_attach(struct usb_serial *serial)
 	if (!priv)
 		return -ENOMEM;
 
+	spin_lock_init(&priv->lock);
+	init_waitqueue_head(&priv->delta_msr_wait);
 	priv->baud_rate = DEFAULT_BAUD_RATE;
-	priv->dtr = 1;
-	priv->rts = 1;
+	priv->line_control = CH341_BIT_RTS | CH341_BIT_DTR;
 
 	r = ch341_configure(serial->dev, priv);
 	if (r < 0)
@@ -231,6 +262,35 @@ error:	kfree(priv);
 	return r;
 }
 
+static void ch341_close(struct tty_struct *tty, struct usb_serial_port *port,
+				struct file *filp)
+{
+	struct ch341_private *priv = usb_get_serial_port_data(port);
+	unsigned long flags;
+	unsigned int c_cflag;
+
+	dbg("%s - port %d", __func__, port->number);
+
+	/* shutdown our urbs */
+	dbg("%s - shutting down urbs", __func__);
+	usb_kill_urb(port->write_urb);
+	usb_kill_urb(port->read_urb);
+	usb_kill_urb(port->interrupt_in_urb);
+
+	if (tty) {
+		c_cflag = tty->termios->c_cflag;
+		if (c_cflag & HUPCL) {
+			/* drop DTR and RTS */
+			spin_lock_irqsave(&priv->lock, flags);
+			priv->line_control = 0;
+			spin_unlock_irqrestore(&priv->lock, flags);
+			ch341_set_handshake(port->serial->dev, 0);
+		}
+	}
+	wake_up_interruptible(&priv->delta_msr_wait);
+}
+
+
 /* open this device, set default parameters */
 static int ch341_open(struct tty_struct *tty, struct usb_serial_port *port,
 				struct file *filp)
@@ -242,14 +302,13 @@ static int ch341_open(struct tty_struct *tty, struct usb_serial_port *port,
 	dbg("ch341_open()");
 
 	priv->baud_rate = DEFAULT_BAUD_RATE;
-	priv->dtr = 1;
-	priv->rts = 1;
+	priv->line_control = CH341_BIT_RTS | CH341_BIT_DTR;
 
 	r = ch341_configure(serial->dev, priv);
 	if (r)
 		goto out;
 
-	r = ch341_set_handshake(serial->dev, priv);
+	r = ch341_set_handshake(serial->dev, priv->line_control);
 	if (r)
 		goto out;
 
@@ -257,6 +316,16 @@ static int ch341_open(struct tty_struct *tty, struct usb_serial_port *port,
 	if (r)
 		goto out;
 
+	dbg("%s - submitting interrupt urb", __func__);
+	port->interrupt_in_urb->dev = serial->dev;
+	r = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
+	if (r) {
+		dev_err(&port->dev, "%s - failed submitting interrupt urb,"
+			" error %d\n", __func__, r);
+		ch341_close(tty, port, NULL);
+		return -EPROTO;
+	}
+
 	r = usb_serial_generic_open(tty, port, filp);
 
 out:	return r;
@@ -270,46 +339,224 @@ static void ch341_set_termios(struct tty_struct *tty,
 {
 	struct ch341_private *priv = usb_get_serial_port_data(port);
 	unsigned baud_rate;
+	unsigned long flags;
 
 	dbg("ch341_set_termios()");
 
+	if (!tty || !tty->termios)
+		return;
+
 	baud_rate = tty_get_baud_rate(tty);
 
-	switch (baud_rate) {
-	case 2400:
-	case 4800:
-	case 9600:
-	case 19200:
-	case 38400:
-	case 115200:
-		priv->baud_rate = baud_rate;
-		break;
-	default:
-		dbg("Rate %d not supported, using %d",
-			baud_rate, DEFAULT_BAUD_RATE);
-		priv->baud_rate = DEFAULT_BAUD_RATE;
+	priv->baud_rate = baud_rate;
+
+	if (baud_rate) {
+		spin_lock_irqsave(&priv->lock, flags);
+		priv->line_control |= (CH341_BIT_DTR | CH341_BIT_RTS);
+		spin_unlock_irqrestore(&priv->lock, flags);
+		ch341_set_baudrate(port->serial->dev, priv);
+	} else {
+		spin_lock_irqsave(&priv->lock, flags);
+		priv->line_control &= ~(CH341_BIT_DTR | CH341_BIT_RTS);
+		spin_unlock_irqrestore(&priv->lock, flags);
 	}
 
-	ch341_set_baudrate(port->serial->dev, priv);
+	ch341_set_handshake(port->serial->dev, priv->line_control);
 
 	/* Unimplemented:
 	 * (cflag & CSIZE) : data bits [5, 8]
 	 * (cflag & PARENB) : parity {NONE, EVEN, ODD}
 	 * (cflag & CSTOPB) : stop bits [1, 2]
 	 */
+}
+
+static int ch341_tiocmset(struct tty_struct *tty, struct file *file,
+			  unsigned int set, unsigned int clear)
+{
+	struct usb_serial_port *port = tty->driver_data;
+	struct ch341_private *priv = usb_get_serial_port_data(port);
+	unsigned long flags;
+	u8 control;
+
+	spin_lock_irqsave(&priv->lock, flags);
+	if (set & TIOCM_RTS)
+		priv->line_control |= CH341_BIT_RTS;
+	if (set & TIOCM_DTR)
+		priv->line_control |= CH341_BIT_DTR;
+	if (clear & TIOCM_RTS)
+		priv->line_control &= ~CH341_BIT_RTS;
+	if (clear & TIOCM_DTR)
+		priv->line_control &= ~CH341_BIT_DTR;
+	control = priv->line_control;
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	return ch341_set_handshake(port->serial->dev, control);
+}
+
+static void ch341_read_int_callback(struct urb *urb)
+{
+	struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
+	unsigned char *data = urb->transfer_buffer;
+	unsigned int actual_length = urb->actual_length;
+	int status;
+
+	dbg("%s (%d)", __func__, port->number);
+
+	switch (urb->status) {
+	case 0:
+		/* success */
+		break;
+	case -ECONNRESET:
+	case -ENOENT:
+	case -ESHUTDOWN:
+		/* this urb is terminated, clean up */
+		dbg("%s - urb shutting down with status: %d", __func__,
+		    urb->status);
+		return;
+	default:
+		dbg("%s - nonzero urb status received: %d", __func__,
+		    urb->status);
+		goto exit;
+	}
 
-	 /* Copy back the old hardware settings */
-	 tty_termios_copy_hw(tty->termios, old_termios);
-	 /* And re-encode with the new baud */
-	 tty_encode_baud_rate(tty, baud_rate, baud_rate);
+	usb_serial_debug_data(debug, &port->dev, __func__,
+			      urb->actual_length, urb->transfer_buffer);
+
+	if (actual_length >= 4) {
+		struct ch341_private *priv = usb_get_serial_port_data(port);
+		unsigned long flags;
+
+		spin_lock_irqsave(&priv->lock, flags);
+		priv->line_status = (~(data[2])) & CH341_BITS_MODEM_STAT;
+		if ((data[1] & CH341_MULT_STAT))
+			priv->multi_status_change = 1;
+		spin_unlock_irqrestore(&priv->lock, flags);
+		wake_up_interruptible(&priv->delta_msr_wait);
+	}
+
+exit:
+	status = usb_submit_urb(urb, GFP_ATOMIC);
+	if (status)
+		dev_err(&urb->dev->dev,
+			"%s - usb_submit_urb failed with result %d\n",
+			__func__, status);
+}
+
+static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
+{
+	struct ch341_private *priv = usb_get_serial_port_data(port);
+	unsigned long flags;
+	u8 prevstatus;
+	u8 status;
+	u8 changed;
+	u8 multi_change = 0;
+
+	spin_lock_irqsave(&priv->lock, flags);
+	prevstatus = priv->line_status;
+	priv->multi_status_change = 0;
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	while (!multi_change) {
+		interruptible_sleep_on(&priv->delta_msr_wait);
+		/* see if a signal did it */
+		if (signal_pending(current))
+			return -ERESTARTSYS;
+
+		spin_lock_irqsave(&priv->lock, flags);
+		status = priv->line_status;
+		multi_change = priv->multi_status_change;
+		spin_unlock_irqrestore(&priv->lock, flags);
+
+		changed = prevstatus ^ status;
+
+		if (((arg & TIOCM_RNG) && (changed & CH341_BIT_RI)) ||
+		    ((arg & TIOCM_DSR) && (changed & CH341_BIT_DSR)) ||
+		    ((arg & TIOCM_CD)  && (changed & CH341_BIT_DCD)) ||
+		    ((arg & TIOCM_CTS) && (changed & CH341_BIT_CTS))) {
+			return 0;
+		}
+		prevstatus = status;
+	}
+
+	return 0;
+}
+
+/*static int ch341_ioctl(struct usb_serial_port *port, struct file *file,*/
+static int ch341_ioctl(struct tty_struct *tty, struct file *file,
+			unsigned int cmd, unsigned long arg)
+{
+	struct usb_serial_port *port = tty->driver_data;
+	dbg("%s (%d) cmd = 0x%04x", __func__, port->number, cmd);
+
+	switch (cmd) {
+	case TIOCMIWAIT:
+		dbg("%s (%d) TIOCMIWAIT", __func__,  port->number);
+		return wait_modem_info(port, arg);
+
+	default:
+		dbg("%s not supported = 0x%04x", __func__, cmd);
+		break;
+	}
+
+	return -ENOIOCTLCMD;
+}
+
+static int ch341_tiocmget(struct tty_struct *tty, struct file *file)
+{
+	struct usb_serial_port *port = tty->driver_data;
+	struct ch341_private *priv = usb_get_serial_port_data(port);
+	unsigned long flags;
+	u8 mcr;
+	u8 status;
+	unsigned int result;
+
+	dbg("%s (%d)", __func__, port->number);
+
+	spin_lock_irqsave(&priv->lock, flags);
+	mcr = priv->line_control;
+	status = priv->line_status;
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	result = ((mcr & CH341_BIT_DTR)		? TIOCM_DTR : 0)
+		  | ((mcr & CH341_BIT_RTS)	? TIOCM_RTS : 0)
+		  | ((status & CH341_BIT_CTS)	? TIOCM_CTS : 0)
+		  | ((status & CH341_BIT_DSR)	? TIOCM_DSR : 0)
+		  | ((status & CH341_BIT_RI)	? TIOCM_RI  : 0)
+		  | ((status & CH341_BIT_DCD)	? TIOCM_CD  : 0);
+
+	dbg("%s - result = %x", __func__, result);
+
+	return result;
+}
+
+
+static int ch341_reset_resume(struct usb_interface *intf)
+{
+	struct usb_device *dev = interface_to_usbdev(intf);
+	struct usb_serial *serial = NULL;
+	struct ch341_private *priv;
+
+	serial = usb_get_intfdata(intf);
+	priv = usb_get_serial_port_data(serial->port[0]);
+
+	/*reconfigure ch341 serial port after bus-reset*/
+	ch341_configure(dev, priv);
+
+	usb_serial_resume(intf);
+
+	return 0;
 }
 
 static struct usb_driver ch341_driver = {
 	.name		= "ch341",
 	.probe		= usb_serial_probe,
 	.disconnect	= usb_serial_disconnect,
+	.suspend	= usb_serial_suspend,
+	.resume		= usb_serial_resume,
+	.reset_resume	= ch341_reset_resume,
 	.id_table	= id_table,
 	.no_dynamic_id	= 1,
+	.supports_autosuspend =	1,
 };
 
 static struct usb_serial_driver ch341_device = {
@@ -317,12 +564,17 @@ static struct usb_serial_driver ch341_device = {
 		.owner	= THIS_MODULE,
 		.name	= "ch341-uart",
 	},
-	.id_table         = id_table,
-	.usb_driver       = &ch341_driver,
-	.num_ports        = 1,
-	.open             = ch341_open,
-	.set_termios      = ch341_set_termios,
-	.attach           = ch341_attach,
+	.id_table          = id_table,
+	.usb_driver        = &ch341_driver,
+	.num_ports         = 1,
+	.open              = ch341_open,
+	.close             = ch341_close,
+	.ioctl             = ch341_ioctl,
+	.set_termios       = ch341_set_termios,
+	.tiocmget          = ch341_tiocmget,
+	.tiocmset          = ch341_tiocmset,
+	.read_int_callback = ch341_read_int_callback,
+	.attach            = ch341_attach,
 };
 
 static int __init ch341_init(void)
diff --git a/drivers/usb/serial/cp2101.c b/drivers/usb/serial/cp210x.c
index 9b4082b58c5..e8d5133ce9c 100644
--- a/drivers/usb/serial/cp2101.c
+++ b/drivers/usb/serial/cp210x.c
@@ -11,10 +11,6 @@
  * thanks to Karl Hiramoto karl@hiramoto.org. RTSCTS hardware flow
  * control thanks to Munir Nassar nassarmu@real-time.com
  *
- * Outstanding Issues:
- *  Buffers are not flushed when the port is opened.
- *  Multiple calls to write() may fail with "Resource temporarily unavailable"
- *
  */
 
 #include <linux/kernel.h>
@@ -31,7 +27,7 @@
 /*
  * Version Information
  */
-#define DRIVER_VERSION "v0.07"
+#define DRIVER_VERSION "v0.08"
 #define DRIVER_DESC "Silicon Labs CP2101/CP2102 RS232 serial adaptor driver"
 
 /*
@@ -42,17 +38,21 @@ static int cp2101_open(struct tty_struct *, struct usb_serial_port *,
 static void cp2101_cleanup(struct usb_serial_port *);
 static void cp2101_close(struct tty_struct *, struct usb_serial_port *,
 							struct file*);
-static void cp2101_get_termios(struct tty_struct *);
+static void cp2101_get_termios(struct tty_struct *,
+	struct usb_serial_port *port);
+static void cp2101_get_termios_port(struct usb_serial_port *port,
+	unsigned int *cflagp, unsigned int *baudp);
 static void cp2101_set_termios(struct tty_struct *, struct usb_serial_port *,
 							struct ktermios*);
 static int cp2101_tiocmget(struct tty_struct *, struct file *);
 static int cp2101_tiocmset(struct tty_struct *, struct file *,
 		unsigned int, unsigned int);
+static int cp2101_tiocmset_port(struct usb_serial_port *port, struct file *,
+		unsigned int, unsigned int);
 static void cp2101_break_ctl(struct tty_struct *, int);
 static int cp2101_startup(struct usb_serial *);
 static void cp2101_shutdown(struct usb_serial *);
 
-
 static int debug;
 
 static struct usb_device_id id_table [] = {
@@ -91,6 +91,7 @@ static struct usb_device_id id_table [] = {
 	{ USB_DEVICE(0x10c4, 0x8293) }, /* Telegesys ETRX2USB */
 	{ USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */
 	{ USB_DEVICE(0x10C4, 0x83A8) }, /* Amber Wireless AMB2560 */
+	{ USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */
 	{ USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */
 	{ USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */
 	{ USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */
@@ -225,7 +226,7 @@ static int cp2101_get_config(struct usb_serial_port *port, u8 request,
 	kfree(buf);
 
 	if (result != size) {
-		dev_err(&port->dev, "%s - Unable to send config request, "
+		dbg("%s - Unable to send config request, "
 				"request=0x%x size=%d result=%d\n",
 				__func__, request, size, result);
 		return -EPROTO;
@@ -276,7 +277,7 @@ static int cp2101_set_config(struct usb_serial_port *port, u8 request,
 	kfree(buf);
 
 	if ((size > 2 && result != size) || result < 0) {
-		dev_err(&port->dev, "%s - Unable to send request, "
+		dbg("%s - Unable to send request, "
 				"request=0x%x size=%d result=%d\n",
 				__func__, request, size, result);
 		return -EPROTO;
@@ -301,6 +302,47 @@ static inline int cp2101_set_config_single(struct usb_serial_port *port,
 	return cp2101_set_config(port, request, &data, 2);
 }
 
+/*
+ * cp2101_quantise_baudrate
+ * Quantises the baud rate as per AN205 Table 1
+ */
+static unsigned int cp2101_quantise_baudrate(unsigned int baud) {
+	if      (baud <= 56)       baud = 0;
+	else if (baud <= 300)      baud = 300;
+	else if (baud <= 600)      baud = 600;
+	else if (baud <= 1200)     baud = 1200;
+	else if (baud <= 1800)     baud = 1800;
+	else if (baud <= 2400)     baud = 2400;
+	else if (baud <= 4000)     baud = 4000;
+	else if (baud <= 4803)     baud = 4800;
+	else if (baud <= 7207)     baud = 7200;
+	else if (baud <= 9612)     baud = 9600;
+	else if (baud <= 14428)    baud = 14400;
+	else if (baud <= 16062)    baud = 16000;
+	else if (baud <= 19250)    baud = 19200;
+	else if (baud <= 28912)    baud = 28800;
+	else if (baud <= 38601)    baud = 38400;
+	else if (baud <= 51558)    baud = 51200;
+	else if (baud <= 56280)    baud = 56000;
+	else if (baud <= 58053)    baud = 57600;
+	else if (baud <= 64111)    baud = 64000;
+	else if (baud <= 77608)    baud = 76800;
+	else if (baud <= 117028)   baud = 115200;
+	else if (baud <= 129347)   baud = 128000;
+	else if (baud <= 156868)   baud = 153600;
+	else if (baud <= 237832)   baud = 230400;
+	else if (baud <= 254234)   baud = 250000;
+	else if (baud <= 273066)   baud = 256000;
+	else if (baud <= 491520)   baud = 460800;
+	else if (baud <= 567138)   baud = 500000;
+	else if (baud <= 670254)   baud = 576000;
+	else if (baud <= 1053257)  baud = 921600;
+	else if (baud <= 1474560)  baud = 1228800;
+	else if (baud <= 2457600)  baud = 1843200;
+	else                       baud = 3686400;
+	return baud;
+}
+
 static int cp2101_open(struct tty_struct *tty, struct usb_serial_port *port,
 				struct file *filp)
 {
@@ -331,10 +373,12 @@ static int cp2101_open(struct tty_struct *tty, struct usb_serial_port *port,
 	}
 
 	/* Configure the termios structure */
-	cp2101_get_termios(tty);
+	cp2101_get_termios(tty, port);
 
 	/* Set the DTR and RTS pins low */
-	cp2101_tiocmset(tty, NULL, TIOCM_DTR | TIOCM_RTS, 0);
+	cp2101_tiocmset_port(tty ? (struct usb_serial_port *) tty->driver_data
+			: port,
+		NULL, TIOCM_DTR | TIOCM_RTS, 0);
 
 	return 0;
 }
@@ -376,9 +420,31 @@ static void cp2101_close(struct tty_struct *tty, struct usb_serial_port *port,
  * from the device, corrects any unsupported values, and configures the
  * termios structure to reflect the state of the device
  */
-static void cp2101_get_termios (struct tty_struct *tty)
+static void cp2101_get_termios(struct tty_struct *tty,
+	struct usb_serial_port *port)
+{
+	unsigned int baud;
+
+	if (tty) {
+		cp2101_get_termios_port(tty->driver_data,
+			&tty->termios->c_cflag, &baud);
+		tty_encode_baud_rate(tty, baud, baud);
+	}
+
+	else {
+		unsigned int cflag;
+		cflag = 0;
+		cp2101_get_termios_port(port, &cflag, &baud);
+	}
+}
+
+/*
+ * cp2101_get_termios_port
+ * This is the heart of cp2101_get_termios which always uses a &usb_serial_port.
+ */
+static void cp2101_get_termios_port(struct usb_serial_port *port,
+	unsigned int *cflagp, unsigned int *baudp)
 {
-	struct usb_serial_port *port = tty->driver_data;
 	unsigned int cflag, modem_ctl[4];
 	unsigned int baud;
 	unsigned int bits;
@@ -388,12 +454,12 @@ static void cp2101_get_termios (struct tty_struct *tty)
 	cp2101_get_config(port, CP2101_BAUDRATE, &baud, 2);
 	/* Convert to baudrate */
 	if (baud)
-		baud = BAUD_RATE_GEN_FREQ / baud;
+		baud = cp2101_quantise_baudrate((BAUD_RATE_GEN_FREQ + baud/2)/ baud);
 
 	dbg("%s - baud rate = %d", __func__, baud);
+	*baudp = baud;
 
-	tty_encode_baud_rate(tty, baud, baud);
-	cflag = tty->termios->c_cflag;
+	cflag = *cflagp;
 
 	cp2101_get_config(port, CP2101_BITS, &bits, 2);
 	cflag &= ~CSIZE;
@@ -499,7 +565,7 @@ static void cp2101_get_termios (struct tty_struct *tty)
 		cflag &= ~CRTSCTS;
 	}
 
-	tty->termios->c_cflag = cflag;
+	*cflagp = cflag;
 }
 
 static void cp2101_set_termios(struct tty_struct *tty,
@@ -517,46 +583,16 @@ static void cp2101_set_termios(struct tty_struct *tty,
 	tty->termios->c_cflag &= ~CMSPAR;
 	cflag = tty->termios->c_cflag;
 	old_cflag = old_termios->c_cflag;
-	baud = tty_get_baud_rate(tty);
+	baud = cp2101_quantise_baudrate(tty_get_baud_rate(tty));
 
 	/* If the baud rate is to be updated*/
-	if (baud != tty_termios_baud_rate(old_termios)) {
-		switch (baud) {
-		case 0:
-		case 600:
-		case 1200:
-		case 1800:
-		case 2400:
-		case 4800:
-		case 7200:
-		case 9600:
-		case 14400:
-		case 19200:
-		case 28800:
-		case 38400:
-		case 55854:
-		case 57600:
-		case 115200:
-		case 127117:
-		case 230400:
-		case 460800:
-		case 921600:
-		case 3686400:
-			break;
-		default:
-			baud = 9600;
-			break;
-		}
-
-		if (baud) {
-			dbg("%s - Setting baud rate to %d baud", __func__,
-					baud);
-			if (cp2101_set_config_single(port, CP2101_BAUDRATE,
-						(BAUD_RATE_GEN_FREQ / baud))) {
-				dev_err(&port->dev, "Baud rate requested not "
-						"supported by device\n");
-				baud = tty_termios_baud_rate(old_termios);
-			}
+	if (baud != tty_termios_baud_rate(old_termios) && baud != 0) {
+		dbg("%s - Setting baud rate to %d baud", __func__,
+				baud);
+		if (cp2101_set_config_single(port, CP2101_BAUDRATE,
+					((BAUD_RATE_GEN_FREQ + baud/2) / baud))) {
+			dbg("Baud rate requested not supported by device\n");
+			baud = tty_termios_baud_rate(old_termios);
 		}
 	}
 	/* Report back the resulting baud rate */
@@ -588,14 +624,14 @@ static void cp2101_set_termios(struct tty_struct *tty,
 			dbg("%s - data bits = 9", __func__);
 			break;*/
 		default:
-			dev_err(&port->dev, "cp2101 driver does not "
+			dbg("cp2101 driver does not "
 					"support the number of bits requested,"
 					" using 8 bit mode\n");
 				bits |= BITS_DATA_8;
 				break;
 		}
 		if (cp2101_set_config(port, CP2101_BITS, &bits, 2))
-			dev_err(&port->dev, "Number of data bits requested "
+			dbg("Number of data bits requested "
 					"not supported by device\n");
 	}
 
@@ -612,7 +648,7 @@ static void cp2101_set_termios(struct tty_struct *tty,
 			}
 		}
 		if (cp2101_set_config(port, CP2101_BITS, &bits, 2))
-			dev_err(&port->dev, "Parity mode not supported "
+			dbg("Parity mode not supported "
 					"by device\n");
 	}
 
@@ -627,7 +663,7 @@ static void cp2101_set_termios(struct tty_struct *tty,
 			dbg("%s - stop bits = 1", __func__);
 		}
 		if (cp2101_set_config(port, CP2101_BITS, &bits, 2))
-			dev_err(&port->dev, "Number of stop bits requested "
+			dbg("Number of stop bits requested "
 					"not supported by device\n");
 	}
 
@@ -661,6 +697,12 @@ static int cp2101_tiocmset (struct tty_struct *tty, struct file *file,
 		unsigned int set, unsigned int clear)
 {
 	struct usb_serial_port *port = tty->driver_data;
+	return cp2101_tiocmset_port(port, file, set, clear);
+}
+
+static int cp2101_tiocmset_port(struct usb_serial_port *port, struct file *file,
+		unsigned int set, unsigned int clear)
+{
 	unsigned int control = 0;
 
 	dbg("%s - port %d", __func__, port->number);
@@ -685,7 +727,6 @@ static int cp2101_tiocmset (struct tty_struct *tty, struct file *file,
 	dbg("%s - control = 0x%.4x", __func__, control);
 
 	return cp2101_set_config(port, CP2101_CONTROL, &control, 2);
-
 }
 
 static int cp2101_tiocmget (struct tty_struct *tty, struct file *file)
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index ae84c326a54..dcc87aaa862 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -1938,18 +1938,16 @@ static void ftdi_process_read(struct work_struct *work)
 		/* Compare new line status to the old one, signal if different/
 		   N.B. packet may be processed more than once, but differences
 		   are only processed once.  */
-		if (priv != NULL) {
-			char new_status = data[packet_offset + 0] &
-							FTDI_STATUS_B0_MASK;
-			if (new_status != priv->prev_status) {
-				priv->diff_status |=
-					new_status ^ priv->prev_status;
-				wake_up_interruptible(&priv->delta_msr_wait);
-				priv->prev_status = new_status;
-			}
+		char new_status = data[packet_offset + 0] &
+						FTDI_STATUS_B0_MASK;
+		if (new_status != priv->prev_status) {
+			priv->diff_status |=
+				new_status ^ priv->prev_status;
+			wake_up_interruptible(&priv->delta_msr_wait);
+			priv->prev_status = new_status;
 		}
 
-		length = min(PKTSZ, urb->actual_length-packet_offset)-2;
+		length = min_t(u32, PKTSZ, urb->actual_length-packet_offset)-2;
 		if (length < 0) {
 			dev_err(&port->dev, "%s - bad packet length: %d\n",
 				__func__, length+2);
@@ -2294,11 +2292,8 @@ static int ftdi_tiocmget(struct tty_struct *tty, struct file *file)
 			   FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
 			   0, 0,
 			   buf, 1, WDR_TIMEOUT);
-		if (ret < 0) {
-			dbg("%s Could not get modem status of device - err: %d", __func__,
-			    ret);
+		if (ret < 0)
 			return ret;
-		}
 		break;
 	case FT8U232AM:
 	case FT232BM:
@@ -2313,15 +2308,11 @@ static int ftdi_tiocmget(struct tty_struct *tty, struct file *file)
 				   FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
 				   0, priv->interface,
 				   buf, 2, WDR_TIMEOUT);
-		if (ret < 0) {
-			dbg("%s Could not get modem status of device - err: %d", __func__,
-			    ret);
+		if (ret < 0)
 			return ret;
-		}
 		break;
 	default:
 		return -EFAULT;
-		break;
 	}
 
 	return  (buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) |
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index 814909f1ee6..9d57cace373 100644
--- a/drivers/usb/serial/generic.c
+++ b/drivers/usb/serial/generic.c
@@ -177,14 +177,6 @@ int usb_serial_generic_resume(struct usb_serial *serial)
 	struct usb_serial_port *port;
 	int i, c = 0, r;
 
-#ifdef CONFIG_PM
-	/*
-	 * If this is an autoresume, don't submit URBs.
-	 * They will be submitted in the open function instead.
-	 */
-	if (serial->dev->auto_pm)
-		return 0;
-#endif
 	for (i = 0; i < serial->num_ports; i++) {
 		port = serial->port[i];
 		if (port->port.count && port->read_urb) {
@@ -196,6 +188,7 @@ int usb_serial_generic_resume(struct usb_serial *serial)
 
 	return c ? -EIO : 0;
 }
+EXPORT_SYMBOL_GPL(usb_serial_generic_resume);
 
 void usb_serial_generic_close(struct tty_struct *tty,
 			struct usb_serial_port *port, struct file *filp)
diff --git a/drivers/usb/serial/ipaq.c b/drivers/usb/serial/ipaq.c
index 132be74d2b8..ef92095b073 100644
--- a/drivers/usb/serial/ipaq.c
+++ b/drivers/usb/serial/ipaq.c
@@ -78,6 +78,7 @@ static int  ipaq_open(struct tty_struct *tty,
 			struct usb_serial_port *port, struct file *filp);
 static void ipaq_close(struct tty_struct *tty,
 			struct usb_serial_port *port, struct file *filp);
+static int  ipaq_calc_num_ports(struct usb_serial *serial);
 static int  ipaq_startup(struct usb_serial *serial);
 static void ipaq_shutdown(struct usb_serial *serial);
 static int ipaq_write(struct tty_struct *tty, struct usb_serial_port *port,
@@ -572,15 +573,10 @@ static struct usb_serial_driver ipaq_device = {
 	.description =		"PocketPC PDA",
 	.usb_driver = 		&ipaq_driver,
 	.id_table =		ipaq_id_table,
-	/*
-	 * some devices have an extra endpoint, which
-	 * must be ignored as it would make the core
-	 * create a second port which oopses when used
-	 */
-	.num_ports =		1,
 	.open =			ipaq_open,
 	.close =		ipaq_close,
 	.attach =		ipaq_startup,
+	.calc_num_ports =	ipaq_calc_num_ports,
 	.shutdown =		ipaq_shutdown,
 	.write =		ipaq_write,
 	.write_room =		ipaq_write_room,
@@ -956,14 +952,49 @@ static void ipaq_destroy_lists(struct usb_serial_port *port)
 }
 
 
+static int ipaq_calc_num_ports(struct usb_serial *serial)
+{
+	/*
+	 * some devices have 3 endpoints, the 3rd of which
+	 * must be ignored as it would make the core
+	 * create a second port which oopses when used
+	 */
+	int ipaq_num_ports = 1;
+
+	dbg("%s - numberofendpoints: %d", __FUNCTION__,
+		(int)serial->interface->cur_altsetting->desc.bNumEndpoints);
+
+	/*
+	 * a few devices have 4 endpoints, seemingly Yakuma devices,
+	 * and we need the second pair, so let them have 2 ports
+	 *
+	 * TODO: can we drop port 1 ?
+	 */
+	if (serial->interface->cur_altsetting->desc.bNumEndpoints > 3) {
+		ipaq_num_ports = 2;
+	}
+
+	return ipaq_num_ports;
+}
+
+
 static int ipaq_startup(struct usb_serial *serial)
 {
 	dbg("%s", __func__);
 	if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
+		/*
+		 * FIXME: HP iPaq rx3715, possibly others, have 1 config that
+		 * is labeled as 2
+		 */
+
 		dev_err(&serial->dev->dev, "active config #%d != 1 ??\n",
 			serial->dev->actconfig->desc.bConfigurationValue);
 		return -ENODEV;
 	}
+
+	dbg("%s - iPAQ module configured for %d ports",
+		__FUNCTION__, serial->num_ports);
+
 	return usb_reset_configuration(serial->dev);
 }
 
diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c
index 9878c0fb385..00daa8f7759 100644
--- a/drivers/usb/serial/keyspan.c
+++ b/drivers/usb/serial/keyspan.c
@@ -1507,7 +1507,7 @@ static struct urb *keyspan_setup_urb(struct usb_serial *serial, int endpoint,
 	} else {
 		dev_warn(&serial->interface->dev,
 			 "unsupported endpoint type %x\n",
-			 ep_desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK);
+			 usb_endpoint_type(ep_desc));
 		usb_free_urb(urb);
 		return NULL;
 	}
diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c
index cea326f1f10..839583dc8b6 100644
--- a/drivers/usb/serial/opticon.c
+++ b/drivers/usb/serial/opticon.c
@@ -1,8 +1,8 @@
 /*
  * Opticon USB barcode to serial driver
  *
- * Copyright (C) 2008 Greg Kroah-Hartman <gregkh@suse.de>
- * Copyright (C) 2008 Novell Inc.
+ * Copyright (C) 2008 - 2009 Greg Kroah-Hartman <gregkh@suse.de>
+ * Copyright (C) 2008 - 2009 Novell Inc.
  *
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU General Public License version
@@ -14,6 +14,7 @@
 #include <linux/tty.h>
 #include <linux/tty_driver.h>
 #include <linux/tty_flip.h>
+#include <linux/serial.h>
 #include <linux/module.h>
 #include <linux/usb.h>
 #include <linux/usb/serial.h>
@@ -40,8 +41,12 @@ struct opticon_private {
 	bool throttled;
 	bool actually_throttled;
 	bool rts;
+	int outstanding_urbs;
 };
 
+/* max number of write urbs in flight */
+#define URB_UPPER_LIMIT	4
+
 static void opticon_bulk_callback(struct urb *urb)
 {
 	struct opticon_private *priv = urb->context;
@@ -106,7 +111,6 @@ static void opticon_bulk_callback(struct urb *urb)
 					priv->rts = false;
 				else
 					priv->rts = true;
-				/* FIXME change the RTS level */
 			} else {
 			dev_dbg(&priv->udev->dev,
 				"Unknown data packet received from the device:"
@@ -188,6 +192,120 @@ static void opticon_close(struct tty_struct *tty, struct usb_serial_port *port,
 	usb_kill_urb(priv->bulk_read_urb);
 }
 
+static void opticon_write_bulk_callback(struct urb *urb)
+{
+	struct opticon_private *priv = urb->context;
+	int status = urb->status;
+	unsigned long flags;
+
+	/* free up the transfer buffer, as usb_free_urb() does not do this */
+	kfree(urb->transfer_buffer);
+
+	if (status)
+		dbg("%s - nonzero write bulk status received: %d",
+		    __func__, status);
+
+	spin_lock_irqsave(&priv->lock, flags);
+	--priv->outstanding_urbs;
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	usb_serial_port_softint(priv->port);
+}
+
+static int opticon_write(struct tty_struct *tty, struct usb_serial_port *port,
+			 const unsigned char *buf, int count)
+{
+	struct opticon_private *priv = usb_get_serial_data(port->serial);
+	struct usb_serial *serial = port->serial;
+	struct urb *urb;
+	unsigned char *buffer;
+	unsigned long flags;
+	int status;
+
+	dbg("%s - port %d", __func__, port->number);
+
+	spin_lock_irqsave(&priv->lock, flags);
+	if (priv->outstanding_urbs > URB_UPPER_LIMIT) {
+		spin_unlock_irqrestore(&priv->lock, flags);
+		dbg("%s - write limit hit\n", __func__);
+		return 0;
+	}
+	priv->outstanding_urbs++;
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	buffer = kmalloc(count, GFP_ATOMIC);
+	if (!buffer) {
+		dev_err(&port->dev, "out of memory\n");
+		count = -ENOMEM;
+		goto error_no_buffer;
+	}
+
+	urb = usb_alloc_urb(0, GFP_ATOMIC);
+	if (!urb) {
+		dev_err(&port->dev, "no more free urbs\n");
+		count = -ENOMEM;
+		goto error_no_urb;
+	}
+
+	memcpy(buffer, buf, count);
+
+	usb_serial_debug_data(debug, &port->dev, __func__, count, buffer);
+
+	usb_fill_bulk_urb(urb, serial->dev,
+			  usb_sndbulkpipe(serial->dev,
+					  port->bulk_out_endpointAddress),
+			  buffer, count, opticon_write_bulk_callback, priv);
+
+	/* send it down the pipe */
+	status = usb_submit_urb(urb, GFP_ATOMIC);
+	if (status) {
+		dev_err(&port->dev,
+		   "%s - usb_submit_urb(write bulk) failed with status = %d\n",
+							__func__, status);
+		count = status;
+		goto error;
+	}
+
+	/* we are done with this urb, so let the host driver
+	 * really free it when it is finished with it */
+	usb_free_urb(urb);
+
+	return count;
+error:
+	usb_free_urb(urb);
+error_no_urb:
+	kfree(buffer);
+error_no_buffer:
+	spin_lock_irqsave(&priv->lock, flags);
+	--priv->outstanding_urbs;
+	spin_unlock_irqrestore(&priv->lock, flags);
+	return count;
+}
+
+static int opticon_write_room(struct tty_struct *tty)
+{
+	struct usb_serial_port *port = tty->driver_data;
+	struct opticon_private *priv = usb_get_serial_data(port->serial);
+	unsigned long flags;
+
+	dbg("%s - port %d", __func__, port->number);
+
+	/*
+	 * We really can take almost anything the user throws at us
+	 * but let's pick a nice big number to tell the tty
+	 * layer that we have lots of free space, unless we don't.
+	 */
+	spin_lock_irqsave(&priv->lock, flags);
+	if (priv->outstanding_urbs > URB_UPPER_LIMIT * 2 / 3) {
+		spin_unlock_irqrestore(&priv->lock, flags);
+		dbg("%s - write limit hit\n", __func__);
+		return 0;
+	}
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	return 2048;
+}
+
 static void opticon_throttle(struct tty_struct *tty)
 {
 	struct usb_serial_port *port = tty->driver_data;
@@ -223,6 +341,67 @@ static void opticon_unthrottle(struct tty_struct *tty)
 							__func__, result);
 }
 
+static int opticon_tiocmget(struct tty_struct *tty, struct file *file)
+{
+	struct usb_serial_port *port = tty->driver_data;
+	struct opticon_private *priv = usb_get_serial_data(port->serial);
+	unsigned long flags;
+	int result = 0;
+
+	dbg("%s - port %d", __func__, port->number);
+
+	spin_lock_irqsave(&priv->lock, flags);
+	if (priv->rts)
+		result = TIOCM_RTS;
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	dbg("%s - %x", __func__, result);
+	return result;
+}
+
+static int get_serial_info(struct opticon_private *priv,
+			   struct serial_struct __user *serial)
+{
+	struct serial_struct tmp;
+
+	if (!serial)
+		return -EFAULT;
+
+	memset(&tmp, 0x00, sizeof(tmp));
+
+	/* fake emulate a 16550 uart to make userspace code happy */
+	tmp.type		= PORT_16550A;
+	tmp.line		= priv->serial->minor;
+	tmp.port		= 0;
+	tmp.irq			= 0;
+	tmp.flags		= ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
+	tmp.xmit_fifo_size	= 1024;
+	tmp.baud_base		= 9600;
+	tmp.close_delay		= 5*HZ;
+	tmp.closing_wait	= 30*HZ;
+
+	if (copy_to_user(serial, &tmp, sizeof(*serial)))
+		return -EFAULT;
+	return 0;
+}
+
+static int opticon_ioctl(struct tty_struct *tty, struct file *file,
+			 unsigned int cmd, unsigned long arg)
+{
+	struct usb_serial_port *port = tty->driver_data;
+	struct opticon_private *priv = usb_get_serial_data(port->serial);
+
+	dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd);
+
+	switch (cmd) {
+	case TIOCGSERIAL:
+		return get_serial_info(priv,
+				       (struct serial_struct __user *)arg);
+	}
+
+	return -ENOIOCTLCMD;
+}
+
 static int opticon_startup(struct usb_serial *serial)
 {
 	struct opticon_private *priv;
@@ -306,11 +485,37 @@ static void opticon_shutdown(struct usb_serial *serial)
 	usb_set_serial_data(serial, NULL);
 }
 
+static int opticon_suspend(struct usb_interface *intf, pm_message_t message)
+{
+	struct usb_serial *serial = usb_get_intfdata(intf);
+	struct opticon_private *priv = usb_get_serial_data(serial);
+
+	usb_kill_urb(priv->bulk_read_urb);
+	return 0;
+}
+
+static int opticon_resume(struct usb_interface *intf)
+{
+	struct usb_serial *serial = usb_get_intfdata(intf);
+	struct opticon_private *priv = usb_get_serial_data(serial);
+	struct usb_serial_port *port = serial->port[0];
+	int result;
+
+	mutex_lock(&port->mutex);
+	if (port->port.count)
+		result = usb_submit_urb(priv->bulk_read_urb, GFP_NOIO);
+	else
+		result = 0;
+	mutex_unlock(&port->mutex);
+	return result;
+}
 
 static struct usb_driver opticon_driver = {
 	.name =		"opticon",
 	.probe =	usb_serial_probe,
 	.disconnect =	usb_serial_disconnect,
+	.suspend =	opticon_suspend,
+	.resume =	opticon_resume,
 	.id_table =	id_table,
 	.no_dynamic_id = 	1,
 };
@@ -326,9 +531,13 @@ static struct usb_serial_driver opticon_device = {
 	.attach =		opticon_startup,
 	.open =			opticon_open,
 	.close =		opticon_close,
+	.write =		opticon_write,
+	.write_room = 		opticon_write_room,
 	.shutdown =		opticon_shutdown,
 	.throttle = 		opticon_throttle,
 	.unthrottle =		opticon_unthrottle,
+	.ioctl =		opticon_ioctl,
+	.tiocmget =		opticon_tiocmget,
 };
 
 static int __init opticon_init(void)
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 61ebddc4849..d560c0b54e6 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -62,6 +62,8 @@ static int  option_tiocmget(struct tty_struct *tty, struct file *file);
 static int  option_tiocmset(struct tty_struct *tty, struct file *file,
 				unsigned int set, unsigned int clear);
 static int  option_send_setup(struct tty_struct *tty, struct usb_serial_port *port);
+static int  option_suspend(struct usb_serial *serial, pm_message_t message);
+static int  option_resume(struct usb_serial *serial);
 
 /* Vendor and product IDs */
 #define OPTION_VENDOR_ID			0x0AF0
@@ -523,6 +525,8 @@ static struct usb_driver option_driver = {
 	.name       = "option",
 	.probe      = usb_serial_probe,
 	.disconnect = usb_serial_disconnect,
+	.suspend    = usb_serial_suspend,
+	.resume     = usb_serial_resume,
 	.id_table   = option_ids,
 	.no_dynamic_id = 	1,
 };
@@ -551,6 +555,8 @@ static struct usb_serial_driver option_1port_device = {
 	.attach            = option_startup,
 	.shutdown          = option_shutdown,
 	.read_int_callback = option_instat_callback,
+	.suspend           = option_suspend,
+	.resume            = option_resume,
 };
 
 static int debug;
@@ -821,10 +827,10 @@ static void option_instat_callback(struct urb *urb)
 				req_pkt->bRequestType, req_pkt->bRequest);
 		}
 	} else
-		dbg("%s: error %d", __func__, status);
+		err("%s: error %d", __func__, status);
 
 	/* Resubmit urb so we continue receiving IRQ data */
-	if (status != -ESHUTDOWN) {
+	if (status != -ESHUTDOWN && status != -ENOENT) {
 		urb->dev = serial->dev;
 		err = usb_submit_urb(urb, GFP_ATOMIC);
 		if (err)
@@ -843,7 +849,6 @@ static int option_write_room(struct tty_struct *tty)
 
 	portdata = usb_get_serial_port_data(port);
 
-
 	for (i = 0; i < N_OUT_URB; i++) {
 		this_urb = portdata->out_urbs[i];
 		if (this_urb && !test_bit(i, &portdata->out_busy))
@@ -1105,14 +1110,12 @@ bail_out_error:
 	return 1;
 }
 
-static void option_shutdown(struct usb_serial *serial)
+static void stop_read_write_urbs(struct usb_serial *serial)
 {
 	int i, j;
 	struct usb_serial_port *port;
 	struct option_port_private *portdata;
 
-	dbg("%s", __func__);
-
 	/* Stop reading/writing urbs */
 	for (i = 0; i < serial->num_ports; ++i) {
 		port = serial->port[i];
@@ -1122,6 +1125,17 @@ static void option_shutdown(struct usb_serial *serial)
 		for (j = 0; j < N_OUT_URB; j++)
 			usb_kill_urb(portdata->out_urbs[j]);
 	}
+}
+
+static void option_shutdown(struct usb_serial *serial)
+{
+	int i, j;
+	struct usb_serial_port *port;
+	struct option_port_private *portdata;
+
+	dbg("%s", __func__);
+
+	stop_read_write_urbs(serial);
 
 	/* Now free them */
 	for (i = 0; i < serial->num_ports; ++i) {
@@ -1152,6 +1166,66 @@ static void option_shutdown(struct usb_serial *serial)
 	}
 }
 
+static int option_suspend(struct usb_serial *serial, pm_message_t message)
+{
+	dbg("%s entered", __func__);
+	stop_read_write_urbs(serial);
+
+	return 0;
+}
+
+static int option_resume(struct usb_serial *serial)
+{
+	int err, i, j;
+	struct usb_serial_port *port;
+	struct urb *urb;
+	struct option_port_private *portdata;
+
+	dbg("%s entered", __func__);
+	/* get the interrupt URBs resubmitted unconditionally */
+	for (i = 0; i < serial->num_ports; i++) {
+		port = serial->port[i];
+		if (!port->interrupt_in_urb) {
+			dbg("%s: No interrupt URB for port %d\n", __func__, i);
+			continue;
+		}
+		port->interrupt_in_urb->dev = serial->dev;
+		err = usb_submit_urb(port->interrupt_in_urb, GFP_NOIO);
+		dbg("Submitted interrupt URB for port %d (result %d)", i, err);
+		if (err < 0) {
+			err("%s: Error %d for interrupt URB of port%d",
+				 __func__, err, i);
+			return err;
+		}
+	}
+
+	for (i = 0; i < serial->num_ports; i++) {
+		/* walk all ports */
+		port = serial->port[i];
+		portdata = usb_get_serial_port_data(port);
+		mutex_lock(&port->mutex);
+
+		/* skip closed ports */
+		if (!port->port.count) {
+			mutex_unlock(&port->mutex);
+			continue;
+		}
+
+		for (j = 0; j < N_IN_URB; j++) {
+			urb = portdata->in_urbs[j];
+			err = usb_submit_urb(urb, GFP_NOIO);
+			if (err < 0) {
+				mutex_unlock(&port->mutex);
+				err("%s: Error %d for bulk URB %d",
+					 __func__, err, i);
+				return err;
+			}
+		}
+		mutex_unlock(&port->mutex);
+	}
+	return 0;
+}
+
 MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_VERSION(DRIVER_VERSION);
diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c
new file mode 100644
index 00000000000..e6d6b0c17fd
--- /dev/null
+++ b/drivers/usb/serial/qcserial.c
@@ -0,0 +1,147 @@
+/*
+ * Qualcomm Serial USB driver
+ *
+ *	Copyright (c) 2008 QUALCOMM Incorporated.
+ *	Copyright (c) 2009 Greg Kroah-Hartman <gregkh@suse.de>
+ *	Copyright (c) 2009 Novell Inc.
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License version
+ *	2 as published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/usb.h>
+#include <linux/usb/serial.h>
+
+#define DRIVER_AUTHOR "Qualcomm Inc"
+#define DRIVER_DESC "Qualcomm USB Serial driver"
+
+static int debug;
+
+static struct usb_device_id id_table[] = {
+	{USB_DEVICE(0x05c6, 0x9211)},	/* Acer Gobi QDL device */
+	{USB_DEVICE(0x05c6, 0x9212)},	/* Acer Gobi Modem Device */
+	{USB_DEVICE(0x03f0, 0x1f1d)},	/* HP un2400 Gobi Modem Device */
+	{USB_DEVICE(0x03f0, 0x201d)},	/* HP un2400 Gobi QDL Device */
+	{ }				/* Terminating entry */
+};
+MODULE_DEVICE_TABLE(usb, id_table);
+
+static struct usb_driver qcdriver = {
+	.name			= "qcserial",
+	.probe			= usb_serial_probe,
+	.disconnect		= usb_serial_disconnect,
+	.id_table		= id_table,
+	.suspend		= usb_serial_suspend,
+	.resume			= usb_serial_resume,
+	.supports_autosuspend	= true,
+};
+
+static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
+{
+	int retval = -ENODEV;
+	__u8 nintf;
+	__u8 ifnum;
+
+	dbg("%s", __func__);
+
+	nintf = serial->dev->actconfig->desc.bNumInterfaces;
+	dbg("Num Interfaces = %d", nintf);
+	ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
+	dbg("This Interface = %d", ifnum);
+
+	switch (nintf) {
+	case 1:
+		/* QDL mode */
+		if (serial->interface->num_altsetting == 2) {
+			struct usb_host_interface *intf;
+
+			intf = &serial->interface->altsetting[1];
+			if (intf->desc.bNumEndpoints == 2) {
+				if (usb_endpoint_is_bulk_in(&intf->endpoint[0].desc) &&
+				    usb_endpoint_is_bulk_out(&intf->endpoint[1].desc)) {
+					dbg("QDL port found");
+					retval = usb_set_interface(serial->dev, ifnum, 1);
+					if (retval < 0) {
+						dev_err(&serial->dev->dev,
+							"Could not set interface, error %d\n",
+							retval);
+						retval = -ENODEV;
+					}
+					return retval;
+				}
+			}
+		}
+		break;
+
+	case 4:
+		/* Composite mode */
+		if (ifnum == 2) {
+			dbg("Modem port found");
+			retval = usb_set_interface(serial->dev, ifnum, 0);
+			if (retval < 0) {
+				dev_err(&serial->dev->dev,
+					"Could not set interface, error %d\n",
+					retval);
+				retval = -ENODEV;
+			}
+			return retval;
+		}
+		break;
+
+	default:
+		dev_err(&serial->dev->dev,
+			"unknown number of interfaces: %d\n", nintf);
+		return -ENODEV;
+	}
+
+	return retval;
+}
+
+static struct usb_serial_driver qcdevice = {
+	.driver = {
+		.owner     = THIS_MODULE,
+		.name      = "qcserial",
+	},
+	.description         = "Qualcomm USB modem",
+	.id_table            = id_table,
+	.usb_driver          = &qcdriver,
+	.num_ports           = 1,
+	.probe               = qcprobe,
+};
+
+static int __init qcinit(void)
+{
+	int retval;
+
+	retval = usb_serial_register(&qcdevice);
+	if (retval)
+		return retval;
+
+	retval = usb_register(&qcdriver);
+	if (retval) {
+		usb_serial_deregister(&qcdevice);
+		return retval;
+	}
+
+	return 0;
+}
+
+static void __exit qcexit(void)
+{
+	usb_deregister(&qcdriver);
+	usb_serial_deregister(&qcdevice);
+}
+
+module_init(qcinit);
+module_exit(qcexit);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL v2");
+
+module_param(debug, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug enabled or not");
diff --git a/drivers/usb/serial/symbolserial.c b/drivers/usb/serial/symbolserial.c
new file mode 100644
index 00000000000..8b3cbc87adc
--- /dev/null
+++ b/drivers/usb/serial/symbolserial.c
@@ -0,0 +1,399 @@
+/*
+ * Symbol USB barcode to serial driver
+ *
+ * Copyright (C) 2009 Greg Kroah-Hartman <gregkh@suse.de>
+ * Copyright (C) 2009 Novell Inc.
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License version
+ *	2 as published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/tty.h>
+#include <linux/tty_driver.h>
+#include <linux/tty_flip.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/usb/serial.h>
+#include <linux/uaccess.h>
+
+static int debug;
+
+static struct usb_device_id id_table[] = {
+	{ USB_DEVICE(0x05e0, 0x0600) },
+	{ },
+};
+MODULE_DEVICE_TABLE(usb, id_table);
+
+/* This structure holds all of the individual device information */
+struct symbol_private {
+	struct usb_device *udev;
+	struct usb_serial *serial;
+	struct usb_serial_port *port;
+	unsigned char *int_buffer;
+	struct urb *int_urb;
+	int buffer_size;
+	u8 bInterval;
+	u8 int_address;
+	spinlock_t lock;	/* protects the following flags */
+	bool throttled;
+	bool actually_throttled;
+	bool rts;
+};
+
+static void symbol_int_callback(struct urb *urb)
+{
+	struct symbol_private *priv = urb->context;
+	unsigned char *data = urb->transfer_buffer;
+	struct usb_serial_port *port = priv->port;
+	int status = urb->status;
+	struct tty_struct *tty;
+	int result;
+	int available_room = 0;
+	int data_length;
+
+	dbg("%s - port %d", __func__, port->number);
+
+	switch (status) {
+	case 0:
+		/* success */
+		break;
+	case -ECONNRESET:
+	case -ENOENT:
+	case -ESHUTDOWN:
+		/* this urb is terminated, clean up */
+		dbg("%s - urb shutting down with status: %d",
+		    __func__, status);
+		return;
+	default:
+		dbg("%s - nonzero urb status received: %d",
+		    __func__, status);
+		goto exit;
+	}
+
+	usb_serial_debug_data(debug, &port->dev, __func__, urb->actual_length,
+			      data);
+
+	if (urb->actual_length > 1) {
+		data_length = urb->actual_length - 1;
+
+		/*
+		 * Data from the device comes with a 1 byte header:
+		 *
+		 * <size of data>data...
+		 * 	This is real data to be sent to the tty layer
+		 * we pretty much just ignore the size and send everything
+		 * else to the tty layer.
+		 */
+		tty = tty_port_tty_get(&port->port);
+		if (tty) {
+			available_room = tty_buffer_request_room(tty,
+							data_length);
+			if (available_room) {
+				tty_insert_flip_string(tty, &data[1],
+						       available_room);
+				tty_flip_buffer_push(tty);
+			}
+			tty_kref_put(tty);
+		}
+	} else {
+		dev_dbg(&priv->udev->dev,
+			"Improper ammount of data received from the device, "
+			"%d bytes", urb->actual_length);
+	}
+
+exit:
+	spin_lock(&priv->lock);
+
+	/* Continue trying to always read if we should */
+	if (!priv->throttled) {
+		usb_fill_int_urb(priv->int_urb, priv->udev,
+				 usb_rcvintpipe(priv->udev,
+				 		priv->int_address),
+				 priv->int_buffer, priv->buffer_size,
+				 symbol_int_callback, priv, priv->bInterval);
+		result = usb_submit_urb(priv->int_urb, GFP_ATOMIC);
+		if (result)
+			dev_err(&port->dev,
+			    "%s - failed resubmitting read urb, error %d\n",
+							__func__, result);
+	} else
+		priv->actually_throttled = true;
+	spin_unlock(&priv->lock);
+}
+
+static int symbol_open(struct tty_struct *tty, struct usb_serial_port *port,
+			struct file *filp)
+{
+	struct symbol_private *priv = usb_get_serial_data(port->serial);
+	unsigned long flags;
+	int result = 0;
+
+	dbg("%s - port %d", __func__, port->number);
+
+	spin_lock_irqsave(&priv->lock, flags);
+	priv->throttled = false;
+	priv->actually_throttled = false;
+	priv->port = port;
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	/*
+	 * Force low_latency on so that our tty_push actually forces the data
+	 * through, otherwise it is scheduled, and with high data rates (like
+	 * with OHCI) data can get lost.
+	 */
+	if (tty)
+		tty->low_latency = 1;
+
+	/* Start reading from the device */
+	usb_fill_int_urb(priv->int_urb, priv->udev,
+			 usb_rcvintpipe(priv->udev, priv->int_address),
+			 priv->int_buffer, priv->buffer_size,
+			 symbol_int_callback, priv, priv->bInterval);
+	result = usb_submit_urb(priv->int_urb, GFP_KERNEL);
+	if (result)
+		dev_err(&port->dev,
+			"%s - failed resubmitting read urb, error %d\n",
+			__func__, result);
+	return result;
+}
+
+static void symbol_close(struct tty_struct *tty, struct usb_serial_port *port,
+			  struct file *filp)
+{
+	struct symbol_private *priv = usb_get_serial_data(port->serial);
+
+	dbg("%s - port %d", __func__, port->number);
+
+	/* shutdown our urbs */
+	usb_kill_urb(priv->int_urb);
+}
+
+static void symbol_throttle(struct tty_struct *tty)
+{
+	struct usb_serial_port *port = tty->driver_data;
+	struct symbol_private *priv = usb_get_serial_data(port->serial);
+	unsigned long flags;
+
+	dbg("%s - port %d", __func__, port->number);
+	spin_lock_irqsave(&priv->lock, flags);
+	priv->throttled = true;
+	spin_unlock_irqrestore(&priv->lock, flags);
+}
+
+static void symbol_unthrottle(struct tty_struct *tty)
+{
+	struct usb_serial_port *port = tty->driver_data;
+	struct symbol_private *priv = usb_get_serial_data(port->serial);
+	unsigned long flags;
+	int result;
+
+	dbg("%s - port %d", __func__, port->number);
+
+	spin_lock_irqsave(&priv->lock, flags);
+	priv->throttled = false;
+	priv->actually_throttled = false;
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	priv->int_urb->dev = port->serial->dev;
+	result = usb_submit_urb(priv->int_urb, GFP_ATOMIC);
+	if (result)
+		dev_err(&port->dev,
+			"%s - failed submitting read urb, error %d\n",
+							__func__, result);
+}
+
+static int symbol_ioctl(struct tty_struct *tty, struct file *file,
+			unsigned int cmd, unsigned long arg)
+{
+	struct usb_serial_port *port = tty->driver_data;
+	struct device *dev = &port->dev;
+
+	/*
+	 * Right now we need to figure out what commands
+	 * most userspace tools want to see for this driver,
+	 * so just log the things.
+	 */
+	switch (cmd) {
+	case TIOCSERGETLSR:
+		dev_info(dev, "%s: TIOCSERGETLSR\n", __func__);
+		break;
+
+	case TIOCGSERIAL:
+		dev_info(dev, "%s: TIOCGSERIAL\n", __func__);
+		break;
+
+	case TIOCMIWAIT:
+		dev_info(dev, "%s: TIOCMIWAIT\n", __func__);
+		break;
+
+	case TIOCGICOUNT:
+		dev_info(dev, "%s: TIOCGICOUNT\n", __func__);
+		break;
+	default:
+		dev_info(dev, "%s: unknown (%d)\n", __func__, cmd);
+	}
+	return -ENOIOCTLCMD;
+}
+
+static int symbol_tiocmget(struct tty_struct *tty, struct file *file)
+{
+	struct usb_serial_port *port = tty->driver_data;
+	struct device *dev = &port->dev;
+
+	/* TODO */
+	/* probably just need to shadow whatever was sent to us here */
+	dev_info(dev, "%s\n", __func__);
+	return 0;
+}
+
+static int symbol_tiocmset(struct tty_struct *tty, struct file *file,
+			   unsigned int set, unsigned int clear)
+{
+	struct usb_serial_port *port = tty->driver_data;
+	struct device *dev = &port->dev;
+
+	/* TODO */
+	/* probably just need to shadow whatever was sent to us here */
+	dev_info(dev, "%s\n", __func__);
+	return 0;
+}
+
+static int symbol_startup(struct usb_serial *serial)
+{
+	struct symbol_private *priv;
+	struct usb_host_interface *intf;
+	int i;
+	int retval = -ENOMEM;
+	bool int_in_found = false;
+
+	/* create our private serial structure */
+	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+	if (priv == NULL) {
+		dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
+		return -ENOMEM;
+	}
+	spin_lock_init(&priv->lock);
+	priv->serial = serial;
+	priv->port = serial->port[0];
+	priv->udev = serial->dev;
+
+	/* find our interrupt endpoint */
+	intf = serial->interface->altsetting;
+	for (i = 0; i < intf->desc.bNumEndpoints; ++i) {
+		struct usb_endpoint_descriptor *endpoint;
+
+		endpoint = &intf->endpoint[i].desc;
+		if (!usb_endpoint_is_int_in(endpoint))
+			continue;
+
+		priv->int_urb = usb_alloc_urb(0, GFP_KERNEL);
+		if (!priv->int_urb) {
+			dev_err(&priv->udev->dev, "out of memory\n");
+			goto error;
+		}
+
+		priv->buffer_size = le16_to_cpu(endpoint->wMaxPacketSize) * 2;
+		priv->int_buffer = kmalloc(priv->buffer_size, GFP_KERNEL);
+		if (!priv->int_buffer) {
+			dev_err(&priv->udev->dev, "out of memory\n");
+			goto error;
+		}
+
+		priv->int_address = endpoint->bEndpointAddress;
+		priv->bInterval = endpoint->bInterval;
+
+		/* set up our int urb */
+		usb_fill_int_urb(priv->int_urb, priv->udev,
+				 usb_rcvintpipe(priv->udev,
+				 		endpoint->bEndpointAddress),
+				 priv->int_buffer, priv->buffer_size,
+				 symbol_int_callback, priv, priv->bInterval);
+
+		int_in_found = true;
+		break;
+		}
+
+	if (!int_in_found) {
+		dev_err(&priv->udev->dev,
+			"Error - the proper endpoints were not found!\n");
+		goto error;
+	}
+
+	usb_set_serial_data(serial, priv);
+	return 0;
+
+error:
+	usb_free_urb(priv->int_urb);
+	kfree(priv->int_buffer);
+	kfree(priv);
+	return retval;
+}
+
+static void symbol_shutdown(struct usb_serial *serial)
+{
+	struct symbol_private *priv = usb_get_serial_data(serial);
+
+	dbg("%s", __func__);
+
+	usb_kill_urb(priv->int_urb);
+	usb_free_urb(priv->int_urb);
+	kfree(priv->int_buffer);
+	kfree(priv);
+	usb_set_serial_data(serial, NULL);
+}
+
+static struct usb_driver symbol_driver = {
+	.name =			"symbol",
+	.probe =		usb_serial_probe,
+	.disconnect =		usb_serial_disconnect,
+	.id_table =		id_table,
+	.no_dynamic_id = 	1,
+};
+
+static struct usb_serial_driver symbol_device = {
+	.driver = {
+		.owner =	THIS_MODULE,
+		.name =		"symbol",
+	},
+	.id_table =		id_table,
+	.usb_driver = 		&symbol_driver,
+	.num_ports =		1,
+	.attach =		symbol_startup,
+	.open =			symbol_open,
+	.close =		symbol_close,
+	.shutdown =		symbol_shutdown,
+	.throttle = 		symbol_throttle,
+	.unthrottle =		symbol_unthrottle,
+	.ioctl = 		symbol_ioctl,
+	.tiocmget = 		symbol_tiocmget,
+	.tiocmset = 		symbol_tiocmset,
+};
+
+static int __init symbol_init(void)
+{
+	int retval;
+
+	retval = usb_serial_register(&symbol_device);
+	if (retval)
+		return retval;
+	retval = usb_register(&symbol_driver);
+	if (retval)
+		usb_serial_deregister(&symbol_device);
+	return retval;
+}
+
+static void __exit symbol_exit(void)
+{
+	usb_deregister(&symbol_driver);
+	usb_serial_deregister(&symbol_device);
+}
+
+module_init(symbol_init);
+module_exit(symbol_exit);
+MODULE_LICENSE("GPL");
+
+module_param(debug, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug enabled or not");
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index cfcfd5ab06c..742a5bc44be 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -204,6 +204,11 @@ static int serial_open (struct tty_struct *tty, struct file *filp)
 		goto bailout_kref_put;
 	}
 
+	if (port->serial->disconnected) {
+		retval = -ENODEV;
+		goto bailout_kref_put;
+	}
+
 	if (mutex_lock_interruptible(&port->mutex)) {
 		retval = -ERESTARTSYS;
 		goto bailout_kref_put;
@@ -1067,6 +1072,8 @@ int usb_serial_suspend(struct usb_interface *intf, pm_message_t message)
 	struct usb_serial_port *port;
 	int i, r = 0;
 
+	serial->suspending = 1;
+
 	for (i = 0; i < serial->num_ports; ++i) {
 		port = serial->port[i];
 		if (port)
@@ -1083,10 +1090,15 @@ EXPORT_SYMBOL(usb_serial_suspend);
 int usb_serial_resume(struct usb_interface *intf)
 {
 	struct usb_serial *serial = usb_get_intfdata(intf);
+	int rv;
 
+	serial->suspending = 0;
 	if (serial->type->resume)
-		return serial->type->resume(serial);
-	return 0;
+		rv = serial->type->resume(serial);
+	else
+		rv = usb_serial_generic_resume(serial);
+
+	return rv;
 }
 EXPORT_SYMBOL(usb_serial_resume);
 
@@ -1222,7 +1234,6 @@ static void fixup_generic(struct usb_serial_driver *device)
 	set_to_generic_if_null(device, read_bulk_callback);
 	set_to_generic_if_null(device, write_bulk_callback);
 	set_to_generic_if_null(device, shutdown);
-	set_to_generic_if_null(device, resume);
 }
 
 int usb_serial_register(struct usb_serial_driver *driver)
@@ -1230,6 +1241,9 @@ int usb_serial_register(struct usb_serial_driver *driver)
 	/* must be called with BKL held */
 	int retval;
 
+	if (usb_disabled())
+		return -ENODEV;
+
 	fixup_generic(driver);
 
 	if (!driver->description)