Staging: remove obsolete serqt_usb driver

Now that Bill rewrote the driver "properly", this old thing can be removed.

Cc: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/Makefile

@@ -40,7 +40,6 @@ obj-$(CONFIG_IDE_PHISON)	+= phison/
 obj-$(CONFIG_PLAN9AUTH)		+= p9auth/
 obj-$(CONFIG_HECI)		+= heci/
 obj-$(CONFIG_LINE6_USB)		+= line6/
-obj-$(CONFIG_USB_SERIAL_QUATECH_ESU100)	+= serqt_usb/
 obj-$(CONFIG_USB_SERIAL_QUATECH2)	+= serqt_usb2/
 obj-$(CONFIG_OCTEON_ETHERNET)	+= octeon/
 obj-$(CONFIG_VT6655)		+= vt6655/

drivers/staging/serqt_usb/Kconfig

@@ -1,9 +0,0 @@
-config USB_SERIAL_QUATECH_ESU100
-	tristate "USB Quatech ESU-100 8 Port Serial Driver"
-	depends on USB_SERIAL
-	help
-	  Say Y here if you want to use the Quatech ESU-100 8 port usb to
-	  serial adapter.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called serqt_usb.

drivers/staging/serqt_usb/Makefile

@@ -1 +0,0 @@
-obj-$(CONFIG_USB_SERIAL_QUATECH_ESU100)		+= serqt_usb.o

drivers/staging/serqt_usb/TODO

@@ -1,8 +0,0 @@
-Things to do for this driver to get merged into the main portion of the
-kernel:
-	- checkpatch cleanups
-	- sparse clean
-	- port to the usb-serial layer instead of doing it all on its
-	  own.
-
-Send patches to Greg Kroah-Hartman <greg@kroah.com>

drivers/staging/serqt_usb/serqt_usb.c

@@ -1,2655 +0,0 @@
-/*
- * This code was developed for the Quatech USB line for linux, it used
- * much of the code developed by Greg Kroah-Hartman for USB serial devices
- *
- */
-
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/module.h>
-#include <linux/usb.h>
-#include <linux/wait.h>
-#include <linux/types.h>
-#include <linux/uaccess.h>
-
-/* Use our own dbg macro */
-/* #define DEBUG_ON */
-/* #undef dbg */
-#ifdef DEBUG_ON
-#define  mydbg(const...)    printk(const)
-#else
-#define  mydbg(const...)
-#endif
-
-/* parity check flag */
-#define RELEVANT_IFLAG(iflag)	(iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
-
-#define SERIAL_TTY_MAJOR	        0	/* Nice legal number now */
-#define SERIAL_TTY_MINORS	        255	/* loads of devices :) */
-#define MAX_NUM_PORTS		        8	/* The maximum number of ports one device can grab at once */
-#define PREFUFF_LEVEL_CONSERVATIVE  128
-#define ATC_DISABLED                0x00
-
-#define RR_BITS             0x03	/* for clearing clock bits */
-#define DUPMODE_BITS        0xc0
-
-#define RS232_MODE          0x00
-#define RTSCTS_TO_CONNECTOR 0x40
-#define CLKS_X4             0x02
-
-#define LOOPMODE_BITS       0x41	/* LOOP1 = b6, LOOP0 = b0 (PORT B) */
-#define ALL_LOOPBACK        0x01
-#define MODEM_CTRL          0x40
-
-#define THISCHAR                    data[i]
-#define NEXTCHAR                    data[i + 1]
-#define THIRDCHAR                  data[i + 2]
-#define FOURTHCHAR                  data[i + 3]
-
-/*
- * Useful defintions for port A, Port B and Port C
- */
-#define FULLPWRBIT          0x00000080
-#define NEXT_BOARD_POWER_BIT        0x00000004
-
-#define SERIAL_LSR_OE       0x02
-#define SERIAL_LSR_PE       0x04
-#define SERIAL_LSR_FE       0x08
-#define SERIAL_LSR_BI       0x10
-
-#define SERIAL_LSR_TEMT     0x40
-
-#define  DIV_LATCH_LS               0x00
-#define  XMT_HOLD_REGISTER          0x00
-#define  XVR_BUFFER_REGISTER        0x00
-#define  DIV_LATCH_MS               0x01
-#define  FIFO_CONTROL_REGISTER      0x02
-#define  LINE_CONTROL_REGISTER      0x03
-#define  MODEM_CONTROL_REGISTER     0x04
-#define  LINE_STATUS_REGISTER       0x05
-#define  MODEM_STATUS_REGISTER      0x06
-
-#define  SERIAL_MCR_DTR             0x01
-#define  SERIAL_MCR_RTS             0x02
-#define  SERIAL_MCR_LOOP            0x10
-
-#define  SERIAL_MSR_CTS             0x10
-#define  SERIAL_MSR_CD              0x80
-#define  SERIAL_MSR_RI              0x40
-#define  SERIAL_MSR_DSR             0x20
-#define  SERIAL_MSR_MASK            0xf0
-
-#define  SERIAL_8_DATA              0x03
-#define  SERIAL_7_DATA              0x02
-#define  SERIAL_6_DATA              0x01
-#define  SERIAL_5_DATA              0x00
-
-#define  SERIAL_ODD_PARITY          0X08
-#define  SERIAL_EVEN_PARITY         0X18
-#define  SERIAL_TWO_STOPB           0x04
-#define  SERIAL_ONE_STOPB           0x00
-
-#define  MAX_BAUD_RATE              460800
-#define  MAX_BAUD_REMAINDER         4608
-
-#define QT_SET_GET_DEVICE           0xc2
-#define QT_OPEN_CLOSE_CHANNEL       0xca
-#define QT_GET_SET_PREBUF_TRIG_LVL  0xcc
-#define QT_SET_ATF                  0xcd
-#define QT_GET_SET_REGISTER         0xc0
-#define QT_GET_SET_UART             0xc1
-#define QT_HW_FLOW_CONTROL_MASK     0xc5
-#define QT_SW_FLOW_CONTROL_MASK     0xc6
-#define QT_SW_FLOW_CONTROL_DISABLE  0xc7
-#define QT_BREAK_CONTROL            0xc8
-
-#define SERIALQT_PCI_IOC_MAGIC 'k'
-#define SERIALQT_WRITE_QOPR _IOW(SERIALQT_PCI_IOC_MAGIC, 0, int)
-#define SERIALQT_WRITE_QMCR _IOW(SERIALQT_PCI_IOC_MAGIC, 1, int)
-#define SERIALQT_GET_NUMOF_UNITS _IOR(SERIALQT_PCI_IOC_MAGIC, 2, void *)
-#define SERIALQT_GET_THIS_UNIT _IOR(SERIALQT_PCI_IOC_MAGIC, 3, void *)
-#define SERIALQT_READ_QOPR _IOR(SERIALQT_PCI_IOC_MAGIC, 4, int)
-#define SERIALQT_READ_QMCR _IOR(SERIALQT_PCI_IOC_MAGIC, 5, int)
-#define SERIALQT_IS422_EXTENDED _IOR(SERIALQT_PCI_IOC_MAGIC, 6, int)	/* returns successful if 422 extended */
-
-#define USBD_TRANSFER_DIRECTION_IN    0xc0
-#define USBD_TRANSFER_DIRECTION_OUT   0x40
-
-#define ATC_DISABLED                0x00
-#define ATC_RTS_ENABLED                 0x02
-#define ATC_DTR_ENABLED                 0x01
-
-#define RR_BITS             0x03	/* for clearing clock bits */
-#define DUPMODE_BITS        0xc0
-
-#define FULL_DUPLEX         0x00
-#define HALF_DUPLEX_RTS     0x40
-#define HALF_DUPLEX_DTR     0x80
-
-#define QMCR_FULL_DUPLEX  0x00
-#define QMCR_HALF_DUPLEX_RTS 0x02
-#define QMCR_HALF_DUPLEX_DTR 0x01
-#define QMCR_HALF_DUPLEX_MASK 0x03
-#define QMCR_CONNECTOR_MASK 0x1C
-
-#define QMCR_RX_EN_MASK 0x20
-
-#define QMCR_ALL_LOOPBACK    0x10
-#define QMCR_MODEM_CONTROL   0X00
-
-#define SERIALQT_IOC_MAXNR 6
-
-struct usb_serial_port {
-	struct usb_serial *serial;	/* pointer back to the owner of this port */
-	struct tty_struct *tty;	/* the coresponding tty for this port */
-	unsigned char number;
-	char active;		/* someone has this device open */
-
-	unsigned char *interrupt_in_buffer;
-	struct urb *interrupt_in_urb;
-	__u8 interrupt_in_endpointAddress;
-
-	unsigned char *bulk_in_buffer;
-	unsigned char *xfer_to_tty_buffer;
-	struct urb *read_urb;
-	__u8 bulk_in_endpointAddress;
-
-	unsigned char *bulk_out_buffer;
-	int bulk_out_size;
-	struct urb *write_urb;
-	__u8 bulk_out_endpointAddress;
-
-	wait_queue_head_t write_wait;
-	wait_queue_head_t wait;
-	struct work_struct work;
-
-	int open_count;		/* number of times this port has been opened */
-	struct semaphore sem;	/* locks this structure */
-
-	__u8 shadowLCR;		/* last LCR value received */
-	__u8 shadowMCR;		/* last MCR value received */
-	__u8 shadowMSR;		/* last MSR value received */
-	__u8 shadowLSR;		/* last LSR value received */
-	int RxHolding;
-	char closePending;
-	int ReadBulkStopped;
-
-	void *private;		/* data private to the specific port */
-};
-
-struct identity {
-	int index;
-	int n_identity;
-};
-
-struct usb_serial {
-	struct usb_device *dev;
-	struct usb_interface *interface;	/* the interface for this device */
-	struct tty_driver *tty_driver;	/* the tty_driver for this device */
-	unsigned char minor;	/* the starting minor number for this device */
-	unsigned char num_ports;	/* the number of ports this device has */
-	char num_interrupt_in;	/* number of interrupt in endpoints we have */
-	char num_bulk_in;	/* number of bulk in endpoints we have */
-	char num_bulk_out;	/* number of bulk out endpoints we have */
-	unsigned char num_OpenCount;	/* the number of ports this device has */
-
-	__u16 vendor;		/* vendor id of this device */
-	__u16 product;		/* product id of this device */
-	struct usb_serial_port port[MAX_NUM_PORTS];
-
-	void *private;		/* data private to the specific driver */
-};
-
-static inline int port_paranoia_check(struct usb_serial_port *port,
-				      const char *function)
-{
-	if (!port) {
-		dbg("%s - port == NULL", function);
-		return -1;
-	}
-	if (!port->serial) {
-		dbg("%s - port->serial == NULL\n", function);
-		return -1;
-	}
-	if (!port->tty) {
-		dbg("%s - port->tty == NULL\n", function);
-		return -1;
-	}
-
-	return 0;
-}
-
-/* Inline functions to check the sanity of a pointer that is passed to us */
-static inline int serial_paranoia_check(struct usb_serial *serial,
-					const char *function)
-{
-	if (!serial) {
-		dbg("%s - serial == NULL\n", function);
-		return -1;
-	}
-
-	return 0;
-}
-
-static inline struct usb_serial *get_usb_serial(struct usb_serial_port *port,
-						const char *function)
-{
-	/* if no port was specified, or it fails a paranoia check */
-	if (!port ||
-	    port_paranoia_check(port, function) ||
-	    serial_paranoia_check(port->serial, function)) {
-		/* then say that we dont have a valid usb_serial thing, which will
-		 * end up genrating -ENODEV return values */
-		return NULL;
-	}
-
-	return port->serial;
-}
-
-struct qt_get_device_data {
-	__u8 porta;
-	__u8 portb;
-	__u8 portc;
-};
-
-struct qt_open_channel_data {
-	__u8 line_status;
-	__u8 modem_status;
-};
-
-static void ProcessLineStatus(struct usb_serial_port *port,
-			      unsigned char line_status);
-static void ProcessModemStatus(struct usb_serial_port *port,
-			       unsigned char modem_status);
-static void ProcessRxChar(struct usb_serial_port *port, unsigned char Data);
-static struct usb_serial *get_free_serial(int num_ports, int *minor);
-
-static int serqt_probe(struct usb_interface *interface,
-		       const struct usb_device_id *id);
-
-static void serqt_usb_disconnect(struct usb_interface *interface);
-static int box_set_device(struct usb_serial *serial,
-			  struct qt_get_device_data *pDeviceData);
-static int box_get_device(struct usb_serial *serial,
-			  struct qt_get_device_data *pDeviceData);
-static int serial_open(struct tty_struct *tty, struct file *filp);
-static void serial_close(struct tty_struct *tty, struct file *filp);
-static int serial_write_room(struct tty_struct *tty);
-static int serial_ioctl(struct tty_struct *tty, struct file *file,
-			unsigned int cmd, unsigned long arg);
-static void serial_set_termios(struct tty_struct *tty, struct ktermios *old);
-static int serial_write(struct tty_struct *tty, const unsigned char *buf,
-			int count);
-
-static void serial_throttle(struct tty_struct *tty);
-static void serial_unthrottle(struct tty_struct *tty);
-static int serial_break(struct tty_struct *tty, int break_state);
-static int serial_chars_in_buffer(struct tty_struct *tty);
-
-static int qt_open(struct tty_struct *tty, struct usb_serial_port *port,
-				struct file *filp);
-static int BoxSetPrebufferLevel(struct usb_serial *serial);
-
-static int BoxSetATC(struct usb_serial *serial, __u16 n_Mode);
-static int BoxSetUart(struct usb_serial *serial, unsigned short Uart_Number,
-		      unsigned short default_divisor,
-		      unsigned char default_LCR);
-
-static int BoxOPenCloseChannel(struct usb_serial *serial, __u16 Uart_Number,
-			       __u16 OpenClose,
-			       struct qt_open_channel_data *pDeviceData);
-static void qt_close(struct tty_struct *tty, struct usb_serial_port *port,
-					struct file *filp);
-static int BoxGetRegister(struct usb_serial *serial, unsigned short Uart_Number,
-			  unsigned short Register_Num, __u8 *pValue);
-static int BoxSetRegister(struct usb_serial *serial, unsigned short Uart_Number,
-			  unsigned short Register_Num, unsigned short Value);
-static void qt_write_bulk_callback(struct urb *urb);
-static int qt_write(struct tty_struct *tty, struct usb_serial_port *port,
-		    const unsigned char *buf, int count);
-static void port_softint(struct work_struct *work);
-static int qt_write_room(struct usb_serial_port *port);
-static int qt_chars_in_buffer(struct usb_serial_port *port);
-static int qt_ioctl(struct tty_struct *tty, struct usb_serial_port *port,
-		struct file *file, unsigned int cmd, unsigned long arg);
-static void qt_set_termios(struct tty_struct *tty,
-			   struct usb_serial_port *port,
-			   struct ktermios *old_termios);
-static int BoxSetHW_FlowCtrl(struct usb_serial *serial, unsigned int index,
-			     int bSet);
-static int BoxDisable_SW_FlowCtrl(struct usb_serial *serial, __u16 index);
-static int EmulateWriteQMCR_Reg(int index, unsigned uc_value);
-static int EmulateReadQMCR_Reg(int index, unsigned *uc_value);
-static struct usb_serial *find_the_box(unsigned int index);
-static int ioctl_serial_usb(struct inode *innod, struct file *filp, unsigned int cmd,
-		     unsigned long arg);
-
-static int BoxSetSW_FlowCtrl(struct usb_serial *serial, __u16 Uart,
-			     unsigned char stop_char, unsigned char start_char);
-static void qt_read_bulk_callback(struct urb *urb);
-
-static void port_sofrint(void *private);
-
-static void return_serial(struct usb_serial *serial);
-
-static int serial_tiocmset(struct tty_struct *tty, struct file *file,
-			   unsigned int set, unsigned int clear);
-static int serial_tiocmget(struct tty_struct *tty, struct file *file);
-
-static int qt_tiocmset(struct tty_struct *tty, struct usb_serial_port *port,
-		       struct file *file, unsigned int value);
-
-static int qt_tiocmget(struct tty_struct *tty, struct usb_serial_port *port,
-							struct file *file);
-
-/* Version Information */
-#define DRIVER_VERSION "v2.14"
-#define DRIVER_AUTHOR "Tim Gobeli, Quatech, Inc"
-#define DRIVER_DESC "Quatech USB to Serial Driver"
-
-#define	USB_VENDOR_ID_QUATECH			0x061d	/* Quatech VID */
-#define DEVICE_ID_QUATECH_RS232_SINGLE_PORT	0xC020	/* SSU100 */
-#define DEVICE_ID_QUATECH_RS422_SINGLE_PORT	0xC030	/* SSU200 */
-#define DEVICE_ID_QUATECH_RS232_DUAL_PORT	0xC040	/* DSU100 */
-#define DEVICE_ID_QUATECH_RS422_DUAL_PORT	0xC050	/* DSU200 */
-#define DEVICE_ID_QUATECH_RS232_FOUR_PORT	0xC060	/* QSU100 */
-#define DEVICE_ID_QUATECH_RS422_FOUR_PORT	0xC070	/* QSU200 */
-#define DEVICE_ID_QUATECH_RS232_EIGHT_PORT_A	0xC080	/* ESU100A */
-#define DEVICE_ID_QUATECH_RS232_EIGHT_PORT_B	0xC081	/* ESU100B */
-#define DEVICE_ID_QUATECH_RS422_EIGHT_PORT_A	0xC0A0	/* ESU200A */
-#define DEVICE_ID_QUATECH_RS422_EIGHT_PORT_B	0xC0A1	/* ESU200B */
-#define DEVICE_ID_QUATECH_RS232_16_PORT_A	0xC090	/* HSU100A */
-#define DEVICE_ID_QUATECH_RS232_16_PORT_B	0xC091	/* HSU100B */
-#define DEVICE_ID_QUATECH_RS232_16_PORT_C	0xC092	/* HSU100C */
-#define DEVICE_ID_QUATECH_RS232_16_PORT_D	0xC093	/* HSU100D */
-#define DEVICE_ID_QUATECH_RS422_16_PORT_A	0xC0B0	/* HSU200A */
-#define DEVICE_ID_QUATECH_RS422_16_PORT_B	0xC0B1	/* HSU200B */
-#define DEVICE_ID_QUATECH_RS422_16_PORT_C	0xC0B2	/* HSU200C */
-#define DEVICE_ID_QUATECH_RS422_16_PORT_D	0xC0B3	/* HSU200D */
-
-/* table of Quatech devices  */
-static struct usb_device_id serqt_table[] = {
-	{USB_DEVICE
-	 (USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_SINGLE_PORT)},
-	{USB_DEVICE
-	 (USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_SINGLE_PORT)},
-	{USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_DUAL_PORT)},
-	{USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_DUAL_PORT)},
-	{USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_FOUR_PORT)},
-	{USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_FOUR_PORT)},
-	{USB_DEVICE
-	 (USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_EIGHT_PORT_A)},
-	{USB_DEVICE
-	 (USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_EIGHT_PORT_B)},
-	{USB_DEVICE
-	 (USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_EIGHT_PORT_A)},
-	{USB_DEVICE
-	 (USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_EIGHT_PORT_B)},
-	{USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_16_PORT_A)},
-	{USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_16_PORT_B)},
-	{USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_16_PORT_C)},
-	{USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS232_16_PORT_D)},
-	{USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_16_PORT_A)},
-	{USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_16_PORT_B)},
-	{USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_16_PORT_C)},
-	{USB_DEVICE(USB_VENDOR_ID_QUATECH, DEVICE_ID_QUATECH_RS422_16_PORT_D)},
-	{}			/* Terminating entry */
-};
-
-MODULE_DEVICE_TABLE(usb, serqt_table);
-
-static int major_number;
-static struct usb_serial *serial_table[SERIAL_TTY_MINORS];	/* initially all NULL */
-
-/* table of Quatech 422devices  */
-static unsigned int serqt_422_table[] = {
-	DEVICE_ID_QUATECH_RS422_SINGLE_PORT,
-	DEVICE_ID_QUATECH_RS422_DUAL_PORT,
-	DEVICE_ID_QUATECH_RS422_FOUR_PORT,
-	DEVICE_ID_QUATECH_RS422_EIGHT_PORT_A,
-	DEVICE_ID_QUATECH_RS422_EIGHT_PORT_B,
-	DEVICE_ID_QUATECH_RS422_16_PORT_A,
-	DEVICE_ID_QUATECH_RS422_16_PORT_B,
-	DEVICE_ID_QUATECH_RS422_16_PORT_C,
-	DEVICE_ID_QUATECH_RS422_16_PORT_D,
-	0			/* terminate with zero */
-};
-
-/* usb specific object needed to register this driver with the usb subsystem */
-static struct usb_driver serqt_usb_driver = {
-	.name = "quatech-usb-serial",
-	.probe = serqt_probe,
-	.disconnect = serqt_usb_disconnect,
-	.id_table = serqt_table,
-};
-
-static struct ktermios *serial_termios[SERIAL_TTY_MINORS];
-static struct ktermios *serial_termios_locked[SERIAL_TTY_MINORS];
-
-static const struct tty_operations serial_ops = {
-	.open = serial_open,
-	.close = serial_close,
-	.write = serial_write,
-	.write_room = serial_write_room,
-	.ioctl = serial_ioctl,
-	.set_termios = serial_set_termios,
-	.throttle = serial_throttle,
-	.unthrottle = serial_unthrottle,
-	.break_ctl = serial_break,
-	.chars_in_buffer = serial_chars_in_buffer,
-	.tiocmset = serial_tiocmset,
-	.tiocmget = serial_tiocmget,
-};
-
-static struct tty_driver serial_tty_driver = {
-	.magic = TTY_DRIVER_MAGIC,
-	.driver_name = "Quatech usb-serial",
-	.name = "ttyQT_USB",
-	.major = SERIAL_TTY_MAJOR,
-	.minor_start = 0,
-	.num = SERIAL_TTY_MINORS,
-	.type = TTY_DRIVER_TYPE_SERIAL,
-	.subtype = SERIAL_TYPE_NORMAL,
-	.flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV,
-
-	.termios = serial_termios,
-	.termios_locked = serial_termios_locked,
-	.init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL,
-
-	.init_termios.c_iflag = ICRNL | IXON,
-	.init_termios.c_oflag = OPOST,
-
-	.init_termios.c_lflag =
-	    ISIG | ICANON | ECHO | ECHOE | ECHOK | ECHOCTL | ECHOKE | IEXTEN,
-};
-
-/* fops for parent device */
-static const struct file_operations serialqt_usb_fops = {
-	.ioctl = ioctl_serial_usb,
-};
-
- /**
- *	  serqt_probe
- *
- *	Called by the usb core when a new device is connected that it thinks
- *	this driver might be interested in.
- *
- */
-static int serqt_probe(struct usb_interface *interface,
-		       const struct usb_device_id *id)
-{
-	struct usb_device *dev = interface_to_usbdev(interface);
-	struct usb_serial *serial = NULL;
-	struct usb_serial_port *port;
-	struct usb_endpoint_descriptor *endpoint;
-	struct usb_endpoint_descriptor *interrupt_in_endpoint[MAX_NUM_PORTS];
-	struct usb_endpoint_descriptor *bulk_in_endpoint[MAX_NUM_PORTS];
-	struct usb_endpoint_descriptor *bulk_out_endpoint[MAX_NUM_PORTS];
-	int minor;
-	int buffer_size;
-	int i;
-	struct usb_host_interface *iface_desc;
-	int num_interrupt_in = 0;
-	int num_bulk_in = 0;
-	int num_bulk_out = 0;
-	int num_ports;
-	struct qt_get_device_data DeviceData;
-	int status;
-
-	mydbg("In %s\n", __func__);
-
-	/* let's find the endpoints needed */
-	/* check out the endpoints */
-	iface_desc = interface->cur_altsetting;;
-	for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
-		endpoint = &iface_desc->endpoint[i].desc;
-
-		if ((endpoint->bEndpointAddress & 0x80) &&
-		    ((endpoint->bmAttributes & 3) == 0x02)) {
-			/* we found a bulk in endpoint */
-			mydbg("found bulk in");
-			bulk_in_endpoint[num_bulk_in] = endpoint;
-			++num_bulk_in;
-		}
-
-		if (((endpoint->bEndpointAddress & 0x80) == 0x00) &&
-		    ((endpoint->bmAttributes & 3) == 0x02)) {
-			/* we found a bulk out endpoint */
-			mydbg("found bulk out\n");
-			bulk_out_endpoint[num_bulk_out] = endpoint;
-			++num_bulk_out;
-		}
-
-		if ((endpoint->bEndpointAddress & 0x80) &&
-		    ((endpoint->bmAttributes & 3) == 0x03)) {
-			/* we found a interrupt in endpoint */
-			mydbg("found interrupt in\n");
-			interrupt_in_endpoint[num_interrupt_in] = endpoint;
-			++num_interrupt_in;
-		}
-	}
-
-	/* found all that we need */
-	dev_info(&interface->dev, "Quatech converter detected\n");
-	num_ports = num_bulk_out;
-	if (num_ports == 0) {
-		err("Quatech device with no bulk out, not allowed.");
-		return -ENODEV;
-
-	}
-
-	serial = get_free_serial(num_ports, &minor);
-	if (serial == NULL) {
-		err("No more free serial devices");
-		return -ENODEV;
-	}
-
-	serial->dev = dev;
-	serial->interface = interface;
-	serial->minor = minor;
-	serial->num_ports = num_ports;
-	serial->num_bulk_in = num_bulk_in;
-	serial->num_bulk_out = num_bulk_out;
-	serial->num_interrupt_in = num_interrupt_in;
-	serial->vendor = dev->descriptor.idVendor;
-	serial->product = dev->descriptor.idProduct;
-
-	/* set up the endpoint information */
-	for (i = 0; i < num_bulk_in; ++i) {
-		endpoint = bulk_in_endpoint[i];
-		port = &serial->port[i];
-		port->read_urb = usb_alloc_urb(0, GFP_KERNEL);
-		if (!port->read_urb) {
-			err("No free urbs available");
-			goto probe_error;
-		}
-		buffer_size = endpoint->wMaxPacketSize;
-		port->bulk_in_endpointAddress = endpoint->bEndpointAddress;
-		port->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL);
-		port->xfer_to_tty_buffer = kmalloc(buffer_size, GFP_KERNEL);
-		if (!port->bulk_in_buffer) {
-			err("Couldn't allocate bulk_in_buffer");
-			goto probe_error;
-		}
-		usb_fill_bulk_urb(port->read_urb, dev,
-				  usb_rcvbulkpipe(dev,
-						  endpoint->bEndpointAddress),
-				  port->bulk_in_buffer, buffer_size,
-				  qt_read_bulk_callback, port);
-	}
-
-	for (i = 0; i < num_bulk_out; ++i) {
-		endpoint = bulk_out_endpoint[i];
-		port = &serial->port[i];
-		port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
-		if (!port->write_urb) {
-			err("No free urbs available");
-			goto probe_error;
-		}
-		buffer_size = endpoint->wMaxPacketSize;
-		port->bulk_out_size = buffer_size;
-		port->bulk_out_endpointAddress = endpoint->bEndpointAddress;
-		port->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
-		if (!port->bulk_out_buffer) {
-			err("Couldn't allocate bulk_out_buffer");
-			goto probe_error;
-		}
-		usb_fill_bulk_urb(port->write_urb, dev,
-				  usb_sndbulkpipe(dev,
-						  endpoint->bEndpointAddress),
-				  port->bulk_out_buffer, buffer_size,
-				  qt_write_bulk_callback, port);
-
-	}
-
-	/* For us numb of bulkin  or out = number of ports */
-	mydbg("%s - setting up %d port structures for this device\n",
-	      __func__, num_bulk_in);
-	for (i = 0; i < num_bulk_in; ++i) {
-		port = &serial->port[i];
-		port->number = i + serial->minor;
-		port->serial = serial;
-
-		INIT_WORK(&port->work, port_softint);
-
-		init_MUTEX(&port->sem);
-
-	}
-	status = box_get_device(serial, &DeviceData);
-	if (status < 0) {
-		mydbg(__FILE__ "box_get_device failed");
-		goto probe_error;
-	}
-
-	mydbg(__FILE__ "DeviceData.portb = 0x%x", DeviceData.portb);
-
-	DeviceData.portb &= ~FULLPWRBIT;
-	mydbg(__FILE__ "Changing DeviceData.portb to 0x%x", DeviceData.portb);
-
-	status = box_set_device(serial, &DeviceData);
-	if (status < 0) {
-		mydbg(__FILE__ "box_set_device failed\n");
-		goto probe_error;
-	}
-
-	/* initialize the devfs nodes for this device and let the user know what ports we are bound to */
-	for (i = 0; i < serial->num_ports; ++i) {
-		dev_info(&interface->dev,
-			 "Converter now attached to ttyUSB%d (or usb/tts/%d for devfs)",
-			 serial->port[i].number, serial->port[i].number);
-	}
-
-	/* usb_serial_console_init (debug, minor); */
-
-	/***********TAG add start next board here ****/
-	status = box_get_device(serial, &DeviceData);
-	if (status < 0) {
-		mydbg(__FILE__ "box_get_device failed");
-		goto probe_error;
-	}
-	/*
-	 * and before we power up lets initialiaze parnent device stuff here before
-	 * we set thmem via any other method such as the property pages
-	 */
-	switch (serial->product) {
-	case DEVICE_ID_QUATECH_RS232_SINGLE_PORT:
-	case DEVICE_ID_QUATECH_RS232_DUAL_PORT:
-	case DEVICE_ID_QUATECH_RS232_FOUR_PORT:
-	case DEVICE_ID_QUATECH_RS232_EIGHT_PORT_A:
-	case DEVICE_ID_QUATECH_RS232_EIGHT_PORT_B:
-	case DEVICE_ID_QUATECH_RS232_16_PORT_A:
-	case DEVICE_ID_QUATECH_RS232_16_PORT_B:
-	case DEVICE_ID_QUATECH_RS232_16_PORT_C:
-	case DEVICE_ID_QUATECH_RS232_16_PORT_D:
-		DeviceData.porta &= ~(RR_BITS | DUPMODE_BITS);
-		DeviceData.porta |= CLKS_X4;
-		DeviceData.portb &= ~(LOOPMODE_BITS);
-		DeviceData.portb |= RS232_MODE;
-		break;
-
-	case DEVICE_ID_QUATECH_RS422_SINGLE_PORT:
-	case DEVICE_ID_QUATECH_RS422_DUAL_PORT:
-	case DEVICE_ID_QUATECH_RS422_FOUR_PORT:
-	case DEVICE_ID_QUATECH_RS422_EIGHT_PORT_A:
-	case DEVICE_ID_QUATECH_RS422_EIGHT_PORT_B:
-	case DEVICE_ID_QUATECH_RS422_16_PORT_A:
-	case DEVICE_ID_QUATECH_RS422_16_PORT_B:
-	case DEVICE_ID_QUATECH_RS422_16_PORT_C:
-	case DEVICE_ID_QUATECH_RS422_16_PORT_D:
-		DeviceData.porta &= ~(RR_BITS | DUPMODE_BITS);
-		DeviceData.porta |= CLKS_X4;
-		DeviceData.portb &= ~(LOOPMODE_BITS);
-		DeviceData.portb |= ALL_LOOPBACK;
-		break;
-	default:
-		DeviceData.porta &= ~(RR_BITS | DUPMODE_BITS);
-		DeviceData.porta |= CLKS_X4;
-		DeviceData.portb &= ~(LOOPMODE_BITS);
-		DeviceData.portb |= RS232_MODE;
-		break;
-
-	}
-	status = BoxSetPrebufferLevel(serial);	/* sets to default vaue */
-	if (status < 0) {
-		mydbg(__FILE__ "BoxSetPrebufferLevel failed\n");
-		goto probe_error;
-	}
-
-	status = BoxSetATC(serial, ATC_DISABLED);
-	if (status < 0) {
-		mydbg(__FILE__ "BoxSetATC failed\n");
-		goto probe_error;
-	}
-	/**********************************************************/
-	mydbg(__FILE__ "DeviceData.portb = 0x%x", DeviceData.portb);
-
-	DeviceData.portb |= NEXT_BOARD_POWER_BIT;
-	mydbg(__FILE__ "Changing DeviceData.portb to 0x%x", DeviceData.portb);
-
-	status = box_set_device(serial, &DeviceData);
-	if (status < 0) {
-		mydbg(__FILE__ "box_set_device failed\n");
-		goto probe_error;
-	}
-
-	mydbg("Exit Success %s\n", __func__);
-
-	usb_set_intfdata(interface, serial);
-	return 0;
-
-probe_error:
-
-	for (i = 0; i < num_bulk_in; ++i) {
-		port = &serial->port[i];
-		usb_free_urb(port->read_urb);
-		kfree(port->bulk_in_buffer);
-	}
-	for (i = 0; i < num_bulk_out; ++i) {
-		port = &serial->port[i];
-		usb_free_urb(port->write_urb);
-		kfree(port->bulk_out_buffer);
-		kfree(port->xfer_to_tty_buffer);
-	}
-	for (i = 0; i < num_interrupt_in; ++i) {
-		port = &serial->port[i];
-		usb_free_urb(port->interrupt_in_urb);
-		kfree(port->interrupt_in_buffer);
-	}
-
-	/* return the minor range that this device had */
-	return_serial(serial);
-	mydbg("Exit fail %s\n", __func__);
-
-	/* free up any memory that we allocated */
-	kfree(serial);
-	return -EIO;
-}
-
-/*
- * returns the serial_table array pointers that are taken
- * up in consecutive positions for each port to a common usb_serial structure
- * back to NULL
- */
-static void return_serial(struct usb_serial *serial)
-{
-	int i;
-
-	mydbg("%s\n", __func__);
-
-	if (serial == NULL)
-		return;
-
-	for (i = 0; i < serial->num_ports; ++i)
-		serial_table[serial->minor + i] = NULL;
-
-	return;
-}
-
-/*
- * Finds the first locatio int the serial_table array where it can fit
- * num_ports number of consecutive points to a common usb_serial
- * structure,allocates a stucture points to it in all the structures, and
- * returns the index to the first location in the array in the "minor"
- * variable.
- */
-static struct usb_serial *get_free_serial(int num_ports, int *minor)
-{
-	struct usb_serial *serial = NULL;
-	int i, j;
-	int good_spot;
-
-	mydbg("%s %d\n", __func__, num_ports);
-
-	*minor = 0;
-	for (i = 0; i < SERIAL_TTY_MINORS; ++i) {
-		if (serial_table[i])
-			continue;
-
-		good_spot = 1;
-		/*
-		 * find a spot in the array where you can fit consecutive
-		 * positions to put the pointers to the usb_serail allocated
-		 * structure for all the minor numbers (ie. ports)
-		 */
-		for (j = 1; j <= num_ports - 1; ++j)
-			if (serial_table[i + j])
-				good_spot = 0;
-		if (good_spot == 0)
-			continue;
-
-		serial = kmalloc(sizeof(struct usb_serial), GFP_KERNEL);
-		if (!serial) {
-			err("%s - Out of memory", __func__);
-			return NULL;
-		}
-		memset(serial, 0, sizeof(struct usb_serial));
-		serial_table[i] = serial;
-		*minor = i;
-		mydbg("%s - minor base = %d\n", __func__, *minor);
-
-		/*
-		 * copy in the pointer into the array starting a the *minor
-		 * position minor is the index into the array.
-		 */
-		for (i = *minor + 1;
-		     (i < (*minor + num_ports)) && (i < SERIAL_TTY_MINORS); ++i)
-			serial_table[i] = serial;
-		return serial;
-	}
-	return NULL;
-}
-
-static int flip_that(struct tty_struct *tty, __u16 index,
-		     struct usb_serial *serial)
-{
-	tty_flip_buffer_push(tty);
-	tty_schedule_flip(tty);
-	return 0;
-}
-
-/* Handles processing and moving data to the tty layer */
-static void port_sofrint(void *private)
-{
-	struct usb_serial_port *port = private;
-	struct usb_serial *serial = get_usb_serial(port, __func__);
-	struct tty_struct *tty = port->tty;
-	unsigned char *data = port->read_urb->transfer_buffer;
-	unsigned int index;
-	struct urb *urb = port->read_urb;
-	unsigned int RxCount = urb->actual_length;
-	int i, result;
-	int flag, flag_data;
-
-	/* index = MINOR(port->tty->device) - serial->minor; */
-	index = tty->index - serial->minor;
-
-	mydbg("%s - port %d\n", __func__, port->number);
-	mydbg("%s - port->RxHolding = %d\n", __func__, port->RxHolding);
-
-	if (port_paranoia_check(port, __func__) != 0) {
-		mydbg("%s - port_paranoia_check, exiting\n", __func__);
-		port->ReadBulkStopped = 1;
-		return;
-	}
-
-	if (!serial) {
-		mydbg("%s - bad serial pointer, exiting\n", __func__);
-		return;
-	}
-	if (port->closePending == 1) {
-		/* Were closing , stop reading */
-		mydbg("%s - (port->closepending == 1\n", __func__);
-		port->ReadBulkStopped = 1;
-		return;
-	}
-
-	/*
-	 * RxHolding is asserted by throttle, if we assert it, we're not
-	 * receiving any more characters and let the box handle the flow
-	 * control
-	 */
-	if (port->RxHolding == 1) {
-		port->ReadBulkStopped = 1;
-		return;
-	}
-
-	if (urb->status) {
-		port->ReadBulkStopped = 1;
-
-		mydbg("%s - nonzero read bulk status received: %d\n",
-		      __func__, urb->status);
-		return;
-	}
-
-	tty = port->tty;
-	mydbg("%s - port %d, tty =0x%p\n", __func__, port->number, tty);
-
-	if (tty && RxCount) {
-		flag_data = 0;
-		for (i = 0; i < RxCount; ++i) {
-			/* Look ahead code here */
-			if ((i <= (RxCount - 3)) && (THISCHAR == 0x1b)
-			    && (NEXTCHAR == 0x1b)) {
-				flag = 0;
-				switch (THIRDCHAR) {
-				case 0x00:
-					/* Line status change 4th byte must follow */
-					if (i > (RxCount - 4)) {
-						mydbg("Illegal escape sequences in received data\n");
-						break;
-					}
-					ProcessLineStatus(port, FOURTHCHAR);
-					i += 3;
-					flag = 1;
-					break;
-
-				case 0x01:
-					/* Modem status status change 4th byte must follow */
-					mydbg("Modem status status. \n");
-					if (i > (RxCount - 4)) {
-						mydbg
-						    ("Illegal escape sequences in received data\n");
-						break;
-					}
-					ProcessModemStatus(port, FOURTHCHAR);
-					i += 3;
-					flag = 1;
-					break;
-				case 0xff:
-					mydbg("No status sequence. \n");
-
-					ProcessRxChar(port, THISCHAR);
-					ProcessRxChar(port, NEXTCHAR);
-					i += 2;
-					break;
-				}
-				if (flag == 1)
-					continue;
-			}
-
-			if (tty && urb->actual_length) {
-				tty_buffer_request_room(tty, 1);
-				tty_insert_flip_string(tty, (data + i), 1);
-			}
-
-		}
-		tty_flip_buffer_push(tty);
-	}
-
-	/* Continue trying to always read  */
-	usb_fill_bulk_urb(port->read_urb, serial->dev,
-			  usb_rcvbulkpipe(serial->dev,
-					  port->bulk_in_endpointAddress),
-			  port->read_urb->transfer_buffer,
-			  port->read_urb->transfer_buffer_length,
-			  qt_read_bulk_callback, port);
-	result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
-	if (result)
-		mydbg("%s - failed resubmitting read urb, error %d",
-		      __func__, result);
-	else {
-		if (tty && RxCount)
-			flip_that(tty, index, serial);
-	}
-
-	return;
-
-}
-
-static void qt_read_bulk_callback(struct urb *urb)
-{
-
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
-
-	if (urb->status) {
-		port->ReadBulkStopped = 1;
-		mydbg("%s - nonzero write bulk status received: %d\n",
-		      __func__, urb->status);
-		return;
-	}
-
-	port_sofrint((void *)port);
-	schedule_work(&port->work);
-}
-
-static void ProcessRxChar(struct usb_serial_port *port, unsigned char Data)
-{
-	struct tty_struct *tty;
-	struct urb *urb = port->read_urb;
-	tty = port->tty;
-	/* if we insert more than TTY_FLIPBUF_SIZE characters, we drop them. */
-
-	if (tty && urb->actual_length) {
-		tty_buffer_request_room(tty, 1);
-		tty_insert_flip_string(tty, &Data, 1);
-		/* tty_flip_buffer_push(tty); */
-	}
-
-	return;
-}
-
-static void ProcessLineStatus(struct usb_serial_port *port,
-			      unsigned char line_status)
-{
-
-	port->shadowLSR =
-	    line_status & (SERIAL_LSR_OE | SERIAL_LSR_PE | SERIAL_LSR_FE |
-			   SERIAL_LSR_BI);
-	return;
-}
-
-static void ProcessModemStatus(struct usb_serial_port *port,
-			       unsigned char modem_status)
-{
-
-	port->shadowMSR = modem_status;
-	wake_up_interruptible(&port->wait);
-	return;
-}
-
-static void serqt_usb_disconnect(struct usb_interface *interface)
-{
-	struct usb_serial *serial = usb_get_intfdata(interface);
-	/* struct device *dev = &interface->dev; */
-	struct usb_serial_port *port;
-	int i;
-
-	mydbg("%s\n", __func__);
-	if (serial) {
-
-		serial->dev = NULL;
-
-		for (i = 0; i < serial->num_ports; ++i)
-			serial->port[i].open_count = 0;
-
-		for (i = 0; i < serial->num_bulk_in; ++i) {
-			port = &serial->port[i];
-			usb_unlink_urb(port->read_urb);
-			usb_free_urb(port->read_urb);
-			kfree(port->bulk_in_buffer);
-		}
-		for (i = 0; i < serial->num_bulk_out; ++i) {
-			port = &serial->port[i];
-			usb_unlink_urb(port->write_urb);
-			usb_free_urb(port->write_urb);
-			kfree(port->bulk_out_buffer);
-		}
-		for (i = 0; i < serial->num_interrupt_in; ++i) {
-			port = &serial->port[i];
-			usb_unlink_urb(port->interrupt_in_urb);
-			usb_free_urb(port->interrupt_in_urb);
-			kfree(port->interrupt_in_buffer);
-	}
-
-		/* return the minor range that this device had */
-		return_serial(serial);
-
-		/* free up any memory that we allocated */
-		kfree(serial);
-
-	} else {
-		dev_info(&interface->dev, "device disconnected");
-	}
-
-}
-
-static struct usb_serial *get_serial_by_minor(unsigned int minor)
-{
-	return serial_table[minor];
-}
-
-/*****************************************************************************
- * Driver tty interface functions
- *****************************************************************************/
-static int serial_open(struct tty_struct *tty, struct file *filp)
-{
-	struct usb_serial *serial;
-	struct usb_serial_port *port;
-	unsigned int portNumber;
-	int retval = 0;
-
-	mydbg("%s\n", __func__);
-
-	/* initialize the pointer incase something fails */
-	tty->driver_data = NULL;
-
-	/* get the serial object associated with this tty pointer */
-	/* serial = get_serial_by_minor (MINOR(tty->device)); */
-
-	/* get the serial object associated with this tty pointer */
-	serial = get_serial_by_minor(tty->index);
-
-	if (serial_paranoia_check(serial, __func__))
-		return -ENODEV;
-
-	/* set up our port structure making the tty driver remember our port object, and us it */
-	portNumber = tty->index - serial->minor;
-	port = &serial->port[portNumber];
-	tty->driver_data = port;
-
-	down(&port->sem);
-	port->tty = tty;
-
-	++port->open_count;
-	if (port->open_count == 1) {
-		port->closePending = 0;
-		mydbg("%s port->closepending = 0\n", __func__);
-
-		port->RxHolding = 0;
-		mydbg("%s port->RxHolding = 0\n", __func__);
-
-		retval = qt_open(tty, port, filp);
-	}
-
-	if (retval)
-		port->open_count = 0;
-	mydbg("%s returning port->closePending  = %d\n", __func__,
-	      port->closePending);
-
-	up(&port->sem);
-	return retval;
-}
-
-/*****************************************************************************
- *device's specific driver functions
- *****************************************************************************/
-static int qt_open(struct tty_struct *tty, struct usb_serial_port *port,
-					struct file *filp)
-{
-	struct usb_serial *serial = port->serial;
-	int result = 0;
-	unsigned int index;
-	struct qt_get_device_data DeviceData;
-	struct qt_open_channel_data ChannelData;
-	unsigned short default_divisor = 0x30;		/* gives 9600 baud rate */
-	unsigned char default_LCR = SERIAL_8_DATA;	/* 8, none , 1 */
-	int status = 0;
-
-	if (port_paranoia_check(port, __func__))
-		return -ENODEV;
-
-	mydbg("%s - port %d\n", __func__, port->number);
-
-	index = tty->index - serial->minor;
-
-	status = box_get_device(serial, &DeviceData);
-	if (status < 0) {
-		mydbg(__FILE__ "box_get_device failed\n");
-		return status;
-	}
-	serial->num_OpenCount++;
-	mydbg("%s serial->num_OpenCount  = %d\n", __func__,
-	      serial->num_OpenCount);
-	/* Open uart channel */
-
-	/* Port specific setups */
-	status = BoxOPenCloseChannel(serial, index, 1, &ChannelData);
-	if (status < 0) {
-		mydbg(__FILE__ "BoxOPenCloseChannel failed\n");
-		return status;
-	}
-	mydbg(__FILE__ "BoxOPenCloseChannel completed.\n");
-
-	port->shadowLSR = ChannelData.line_status &
-	    (SERIAL_LSR_OE | SERIAL_LSR_PE | SERIAL_LSR_FE | SERIAL_LSR_BI);
-
-	port->shadowMSR = ChannelData.modem_status &
-	    (SERIAL_MSR_CTS | SERIAL_MSR_DSR | SERIAL_MSR_RI | SERIAL_MSR_CD);
-
-	/* Set Baud rate to default and turn off (default)flow control here */
-	status = BoxSetUart(serial, index, default_divisor, default_LCR);
-	if (status < 0) {
-		mydbg(__FILE__ "BoxSetUart failed\n");
-		return status;
-	}
-	mydbg(__FILE__ "BoxSetUart completed.\n");
-
-	/* Put this here to make it responsive to stty and defauls set by the tty layer */
-	qt_set_termios(tty, port, NULL);
-
-	/* Initialize the wait que head */
-	init_waitqueue_head(&(port->wait));
-
-	/* if we have a bulk endpoint, start reading from it */
-	if (serial->num_bulk_in) {
-		/* Start reading from the device */
-		usb_fill_bulk_urb(port->read_urb, serial->dev,
-				  usb_rcvbulkpipe(serial->dev,
-						  port->
-						  bulk_in_endpointAddress),
-				  port->read_urb->transfer_buffer,
-				  port->read_urb->transfer_buffer_length,
-				  qt_read_bulk_callback, port);
-
-		port->ReadBulkStopped = 0;
-
-		result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
-
-		if (result) {
-			err("%s - failed resubmitting read urb, error %d\n",
-			    __func__, result);
-			port->ReadBulkStopped = 1;
-		}
-
-	}
-
-	return result;
-}
-
-static void serial_close(struct tty_struct *tty, struct file *filp)
-{
-	struct usb_serial_port *port =
-	    tty->driver_data;
-	struct usb_serial *serial = get_usb_serial(port, __func__);
-
-	if (!serial)
-		return;
-
-	down(&port->sem);
-
-	mydbg("%s - port %d\n", __func__, port->number);
-
-	/* if disconnect beat us to the punch here, there's nothing to do */
-	if (tty->driver_data) {
-		if (!port->open_count) {
-			mydbg("%s - port not opened\n", __func__);
-			goto exit;
-		}
-
-		--port->open_count;
-		if (port->open_count <= 0) {
-			port->closePending = 1;
-			mydbg("%s - port->closePending = 1\n", __func__);
-
-			if (serial->dev) {
-				qt_close(tty, port, filp);
-				port->open_count = 0;
-			}
-		}
-
-	}
-
-exit:
-	up(&port->sem);
-
-	mydbg("%s - %d return\n", __func__, port->number);
-
-}
-
-static void qt_close(struct tty_struct *tty, struct usb_serial_port *port,
-							struct file *filp)
-{
-	unsigned long jift = jiffies + 10 * HZ;
-	u8 lsr, mcr;
-	struct usb_serial *serial = port->serial;
-	int status;
-	unsigned int index;
-
-	struct qt_open_channel_data ChannelData;
-	status = 0;
-	lsr = 0;
-
-	mydbg("%s - port %d\n", __func__, port->number);
-	index = tty->index - serial->minor;
-
-	/* shutdown any bulk reads that might be going on */
-	if (serial->num_bulk_out)
-		usb_unlink_urb(port->write_urb);
-	if (serial->num_bulk_in)
-		usb_unlink_urb(port->read_urb);
-
-	/* wait up to 30 seconds for transmitter to empty */
-	do {
-		status = BoxGetRegister(serial, index, LINE_STATUS_REGISTER, &lsr);
-		if (status < 0) {
-			mydbg(__FILE__ "box_get_device failed\n");
-			break;
-		}
-
-		if ((lsr & SERIAL_LSR_TEMT)
-		    && (port->ReadBulkStopped == 1))
-			break;
-		schedule();
-
-	}
-	while (jiffies <= jift);
-
-	if (jiffies > jift)
-		mydbg("%s - port %d timout of checking transmitter empty\n",
-		      __func__, port->number);
-	else
-		mydbg("%s - port %d checking transmitter empty succeded\n",
-		      __func__, port->number);
-
-	status =
-	    BoxGetRegister(serial, index, MODEM_CONTROL_REGISTER,
-			   &mcr);
-	mydbg(__FILE__ "BoxGetRegister MCR = 0x%x.\n", mcr);
-
-	if (status >= 0) {
-		mcr &= ~(SERIAL_MCR_DTR | SERIAL_MCR_RTS);
-		/* status = BoxSetRegister(serial, index, MODEM_CONTROL_REGISTER, mcr); */
-	}
-
-	/* Close uart channel */
-	status = BoxOPenCloseChannel(serial, index, 0, &ChannelData);
-	if (status < 0)
-		mydbg("%s - port %d BoxOPenCloseChannel failed.\n",
-		      __func__, port->number);
-
-	serial->num_OpenCount--;
-
-}
-
-static int serial_write(struct tty_struct *tty, const unsigned char *buf,
-			int count)
-{
-	struct usb_serial_port *port = tty->driver_data;
-	struct usb_serial *serial;
-	int retval = -EINVAL;
-	unsigned int index;
-
-	serial = get_usb_serial(port, __func__);
-	if (serial == NULL)
-		return -ENODEV;
-	/* This can happen if we get disconnected a */
-	if (port->open_count == 0)
-		return -ENODEV;
-	index = tty->index - serial->minor;
-
-	mydbg("%s - port %d, %d byte(s)\n", __func__, port->number, count);
-	mydbg("%s - port->RxHolding =  %d\n", __func__, port->RxHolding);
-
-	if (!port->open_count) {
-		mydbg("%s - port not opened\n", __func__);
-		goto exit;
-	}
-
-	retval = qt_write(tty, port, buf, count);
-
-exit:
-	return retval;
-}
-
-static int qt_write(struct tty_struct *tty, struct usb_serial_port *port,
-				const unsigned char *buf, int count)
-{
-	int result;
-	unsigned int index;
-	struct usb_serial *serial = get_usb_serial(port, __func__);
-
-	if (serial == NULL)
-		return -ENODEV;
-
-	mydbg("%s - port %d\n", __func__, port->number);
-
-	if (count == 0) {
-		mydbg("%s - write request of 0 bytes\n", __func__);
-		return 0;
-	}
-
-	index = tty->index - serial->minor;
-	/* only do something if we have a bulk out endpoint */
-	if (serial->num_bulk_out) {
-		if (port->write_urb->status == -EINPROGRESS) {
-			mydbg("%s - already writing\n", __func__);
-			return 0;
-		}
-
-		count =
-		    (count > port->bulk_out_size) ? port->bulk_out_size : count;
-		memcpy(port->write_urb->transfer_buffer, buf, count);
-
-		/* usb_serial_debug_data(__FILE__, __func__, count, port->write_urb->transfer_buffer); */
-
-		/* set up our urb */
-
-		usb_fill_bulk_urb(port->write_urb, serial->dev,
-				  usb_sndbulkpipe(serial->dev,
-						  port->
-						  bulk_out_endpointAddress),
-				  port->write_urb->transfer_buffer, count,
-				  qt_write_bulk_callback, port);
-
-		/* send the data out the bulk port */
-		result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
-		if (result)
-			mydbg("%s - failed submitting write urb, error %d\n",
-			      __func__, result);
-		else
-			result = count;
-
-		return result;
-	}
-
-	/* no bulk out, so return 0 bytes written */
-	return 0;
-}
-
-static void qt_write_bulk_callback(struct urb *urb)
-{
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
-	struct usb_serial *serial = get_usb_serial(port, __func__);
-
-	mydbg("%s - port %d\n", __func__, port->number);
-
-	if (!serial) {
-		mydbg("%s - bad serial pointer, exiting\n", __func__);
-		return;
-	}
-
-	if (urb->status) {
-		mydbg("%s - nonzero write bulk status received: %d\n",
-		      __func__, urb->status);
-		return;
-	}
-	port_softint(&port->work);
-	schedule_work(&port->work);
-
-	return;
-}
-
-static void port_softint(struct work_struct *work)
-{
-	struct usb_serial_port *port =
-	    container_of(work, struct usb_serial_port, work);
-	struct usb_serial *serial = get_usb_serial(port, __func__);
-	struct tty_struct *tty;
-
-	mydbg("%s - port %d\n", __func__, port->number);
-
-	if (!serial)
-		return;
-
-	tty = port->tty;
-	if (!tty)
-		return;
-#if 0
-	if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP))
-	    && tty->ldisc.write_wakeup) {
-		mydbg("%s - write wakeup call.\n", __func__);
-		(tty->ldisc.write_wakeup) (tty);
-	}
-#endif
-
-	wake_up_interruptible(&tty->write_wait);
-}
-static int serial_write_room(struct tty_struct *tty)
-{
-	struct usb_serial_port *port = tty->driver_data;
-	struct usb_serial *serial = get_usb_serial(port, __func__);
-	int retval = -EINVAL;
-
-	if (!serial)
-		return -ENODEV;
-
-	down(&port->sem);
-
-	mydbg("%s - port %d\n", __func__, port->number);
-
-	if (!port->open_count) {
-		mydbg("%s - port not open\n", __func__);
-		goto exit;
-	}
-
-	retval = qt_write_room(port);
-
-exit:
-	up(&port->sem);
-	return retval;
-}
-static int qt_write_room(struct usb_serial_port *port)
-{
-	struct usb_serial *serial = port->serial;
-	int room = 0;
-	if (port->closePending == 1) {
-		mydbg("%s - port->closePending == 1\n", __func__);
-		return -ENODEV;
-	}
-
-	mydbg("%s - port %d\n", __func__, port->number);
-
-	if (serial->num_bulk_out) {
-		if (port->write_urb->status != -EINPROGRESS)
-			room = port->bulk_out_size;
-	}
-
-	mydbg("%s - returns %d\n", __func__, room);
-	return room;
-}
-static int serial_chars_in_buffer(struct tty_struct *tty)
-{
-	struct usb_serial_port *port = tty->driver_data;
-	struct usb_serial *serial = get_usb_serial(port, __func__);
-	int retval = -EINVAL;
-
-	if (!serial)
-		return -ENODEV;
-
-	down(&port->sem);
-
-	mydbg("%s = port %d\n", __func__, port->number);
-
-	if (!port->open_count) {
-		mydbg("%s - port not open\n", __func__);
-		goto exit;
-	}
-
-	retval = qt_chars_in_buffer(port);
-
-exit:
-	up(&port->sem);
-	return retval;
-}
-
-static int qt_chars_in_buffer(struct usb_serial_port *port)
-{
-	struct usb_serial *serial = port->serial;
-	int chars = 0;
-
-	mydbg("%s - port %d\n", __func__, port->number);
-
-	if (serial->num_bulk_out) {
-		if (port->write_urb->status == -EINPROGRESS)
-			chars = port->write_urb->transfer_buffer_length;
-	}
-
-	mydbg("%s - returns %d\n", __func__, chars);
-	return chars;
-}
-
-static int serial_tiocmset(struct tty_struct *tty, struct file *file,
-			   unsigned int set, unsigned int clear)
-{
-
-	struct usb_serial_port *port = tty->driver_data;
-	struct usb_serial *serial = get_usb_serial(port, __func__);
-	int retval = -ENODEV;
-	unsigned int index;
-	mydbg("In %s \n", __func__);
-
-	if (!serial)
-		return -ENODEV;
-
-	index = tty->index - serial->minor;
-
-	down(&port->sem);
-
-	mydbg("%s - port %d \n", __func__, port->number);
-	mydbg("%s - port->RxHolding = %d\n", __func__, port->RxHolding);
-
-	if (!port->open_count) {
-		mydbg("%s - port not open\n", __func__);
-		goto exit;
-	}
-
-	retval = qt_tiocmset(tty, port, file, set);
-
-exit:
-	up(&port->sem);
-	return retval;
-}
-
-static int qt_tiocmset(struct tty_struct *tty, struct usb_serial_port *port,
-		       struct file *file, unsigned int value)
-{
-
-	u8 mcr;
-	int status;
-	unsigned int index;
-	struct usb_serial *serial = get_usb_serial(port, __func__);
-
-	if (serial == NULL)
-		return -ENODEV;
-
-	mydbg("%s - port %d\n", __func__, port->number);
-
-    /**************************************************************************************/
-    /**  TIOCMGET
-     */
-	index = tty->index - serial->minor;
-	status =
-	    BoxGetRegister(port->serial, index, MODEM_CONTROL_REGISTER,
-			   &mcr);
-	if (status < 0)
-		return -ESPIPE;
-
-	/*
-	 * Turn off the RTS and DTR and loopbcck and then only turn on what was
-	 * asked for
-	 */
-	mcr &= ~(SERIAL_MCR_RTS | SERIAL_MCR_DTR | SERIAL_MCR_LOOP);
-	if (value & TIOCM_RTS)
-		mcr |= SERIAL_MCR_RTS;
-	if (value & TIOCM_DTR)
-		mcr |= SERIAL_MCR_DTR;
-	if (value & TIOCM_LOOP)
-		mcr |= SERIAL_MCR_LOOP;
-
-	status =
-	    BoxSetRegister(port->serial, index, MODEM_CONTROL_REGISTER,
-			   mcr);
-	if (status < 0)
-		return -ESPIPE;
-	else
-		return 0;
-}
-
-static int serial_tiocmget(struct tty_struct *tty, struct file *file)
-{
-
-	struct usb_serial_port *port = tty->driver_data;
-	struct usb_serial *serial = get_usb_serial(port, __func__);
-	int retval = -ENODEV;
-	unsigned int index;
-	mydbg("In %s \n", __func__);
-
-	if (!serial)
-		return -ENODEV;
-
-	index = tty->index - serial->minor;
-
-	down(&port->sem);
-
-	mydbg("%s - port %d\n", __func__, port->number);
-	mydbg("%s - port->RxHolding = %d\n", __func__, port->RxHolding);
-
-	if (!port->open_count) {
-		mydbg("%s - port not open\n", __func__);
-		goto exit;
-	}
-
-	retval = qt_tiocmget(tty, port, file);
-
-exit:
-	up(&port->sem);
-	return retval;
-}
-
-static int qt_tiocmget(struct tty_struct *tty,
-			struct usb_serial_port *port, struct file *file)
-{
-
-	u8 mcr;
-	u8 msr;
-	unsigned int result = 0;
-	int status;
-	unsigned int index;
-
-	struct usb_serial *serial = get_usb_serial(port, __func__);
-	if (serial == NULL)
-		return -ENODEV;
-
-	mydbg("%s - port %d, tty =0x%p\n", __func__, port->number, tty);
-
-    /**************************************************************************************/
-    /**  TIOCMGET
-     */
-	index = tty->index - serial->minor;
-	status =
-	    BoxGetRegister(port->serial, index, MODEM_CONTROL_REGISTER,
-			   &mcr);
-	if (status >= 0) {
-		status =
-		    BoxGetRegister(port->serial, index,
-				   MODEM_STATUS_REGISTER, &msr);
-
-	}
-
-	if (status >= 0) {
-		result = ((mcr & SERIAL_MCR_DTR) ? TIOCM_DTR : 0)
-		    /* DTR IS SET */
-		    | ((mcr & SERIAL_MCR_RTS) ? TIOCM_RTS : 0)
-		    /* RTS IS SET */
-		    | ((msr & SERIAL_MSR_CTS) ? TIOCM_CTS : 0)
-		    /* CTS is set */
-		    | ((msr & SERIAL_MSR_CD) ? TIOCM_CAR : 0)
-		    /* Carrier detect is set */
-		    | ((msr & SERIAL_MSR_RI) ? TIOCM_RI : 0)
-		    /* Ring indicator set */
-		    | ((msr & SERIAL_MSR_DSR) ? TIOCM_DSR : 0);
-		/* DSR is set */
-		return result;
-
-	} else
-		return -ESPIPE;
-}
-
-static int serial_ioctl(struct tty_struct *tty, struct file *file,
-			unsigned int cmd, unsigned long arg)
-{
-
-	struct usb_serial_port *port = tty->driver_data;
-	struct usb_serial *serial = get_usb_serial(port, __func__);
-	int retval = -ENODEV;
-	unsigned int index;
-	mydbg("In %s \n", __func__);
-
-	if (!serial)
-		return -ENODEV;
-
-	index = tty->index - serial->minor;
-
-	down(&port->sem);
-
-	mydbg("%s - port %d, cmd 0x%.4x\n", __func__, port->number, cmd);
-	mydbg("%s - port->RxHolding = %d\n", __func__, port->RxHolding);
-
-	if (!port->open_count) {
-		mydbg("%s - port not open\n", __func__);
-		goto exit;
-	}
-
-	retval = qt_ioctl(tty, port, file, cmd, arg);
-
-exit:
-	up(&port->sem);
-	return retval;
-}
-static int qt_ioctl(struct tty_struct *tty, struct usb_serial_port *port,
-			struct file *file, unsigned int cmd, unsigned long arg)
-{
-	__u8 mcr;
-	__u8 msr;
-	unsigned short prev_msr;
-	unsigned int value, result = 0;
-	int status;
-	unsigned int index;
-
-	struct usb_serial *serial = get_usb_serial(port, __func__);
-	if (serial == NULL)
-		return -ENODEV;
-
-	mydbg("%s - port %d, tty =0x%p\n", __func__, port->number, tty);
-
-	/* TIOCMGET */
-	index = tty->index - serial->minor;
-
-	if (cmd == TIOCMIWAIT) {
-		DECLARE_WAITQUEUE(wait, current);
-		prev_msr = port->shadowMSR & SERIAL_MSR_MASK;
-		while (1) {
-			add_wait_queue(&port->wait, &wait);
-			set_current_state(TASK_INTERRUPTIBLE);
-			schedule();
-			remove_wait_queue(&port->wait, &wait);
-			/* see if a signal woke us up */
-			if (signal_pending(current))
-				return -ERESTARTSYS;
-			msr = port->shadowMSR & SERIAL_MSR_MASK;
-			if (msr == prev_msr)
-				return -EIO;	/* no change error */
-
-			if ((arg & TIOCM_RNG
-			     && ((prev_msr & SERIAL_MSR_RI) ==
-				 (msr & SERIAL_MSR_RI)))
-			    || (arg & TIOCM_DSR
-				&& ((prev_msr & SERIAL_MSR_DSR) ==
-				    (msr & SERIAL_MSR_DSR)))
-			    || (arg & TIOCM_CD
-				&& ((prev_msr & SERIAL_MSR_CD) ==
-				    (msr & SERIAL_MSR_CD)))
-			    || (arg & TIOCM_CTS
-				&& ((prev_msr & SERIAL_MSR_CTS) ==
-				    (msr & SERIAL_MSR_CTS)))) {
-				return 0;
-			}
-
-		}
-
-	}
-	mydbg("%s -No ioctl for that one.  port = %d\n", __func__,
-	      port->number);
-
-	return -ENOIOCTLCMD;
-}
-
-static void serial_set_termios(struct tty_struct *tty, struct ktermios *old)
-{
-	struct usb_serial_port *port =
-	    tty->driver_data;
-	struct usb_serial *serial = get_usb_serial(port, __func__);
-
-	if (!serial)
-		return;
-
-	down(&port->sem);
-
-	mydbg("%s - port %d\n", __func__, port->number);
-
-	if (!port->open_count) {
-		mydbg("%s - port not open\n", __func__);
-		goto exit;
-	}
-
-	/* pass on to the driver specific version of this function if it is available */
-	qt_set_termios(tty, port, old);
-
-exit:
-	up(&port->sem);
-}
-
-static void qt_set_termios(struct tty_struct *tty,
-			   struct usb_serial_port *port,
-			   struct ktermios *old_termios)
-{
-	unsigned int cflag;
-	int baud, divisor, remainder;
-	unsigned char new_LCR = 0;
-	int status;
-	struct usb_serial *serial;
-	__u16 index;
-	__u16 tmp, tmp2;
-
-	mydbg("%s - port %d\n", __func__, port->number);
-
-	tmp = port->tty->index;
-	mydbg("%s - MINOR(port->tty->index) =  %d\n", __func__, tmp);
-
-	serial = port->serial;
-	tmp2 = serial->minor;
-	mydbg("%s - serial->minor =  %d\n", __func__, tmp2);
-
-	index = port->tty->index - serial->minor;
-
-	cflag = tty->termios->c_cflag;
-
-	mydbg("%s - 3\n", __func__);
-
-	switch (cflag) {
-	case CS5:
-		new_LCR |= SERIAL_5_DATA;
-		break;
-	case CS6:
-		new_LCR |= SERIAL_6_DATA;
-		break;
-	case CS7:
-		new_LCR |= SERIAL_7_DATA;
-		break;
-	default:
-	case CS8:
-		new_LCR |= SERIAL_8_DATA;
-		break;
-	}
-
-	/* Parity stuff */
-	if (cflag & PARENB) {
-		if (cflag & PARODD)
-			new_LCR |= SERIAL_ODD_PARITY;
-		else
-			new_LCR |= SERIAL_EVEN_PARITY;
-	}
-	if (cflag & CSTOPB)
-		new_LCR |= SERIAL_TWO_STOPB;
-	else
-		new_LCR |= SERIAL_TWO_STOPB;
-
-	mydbg("%s - 4\n", __func__);
-	/* Thats the LCR stuff, go ahead and set it */
-	baud = tty_get_baud_rate(tty);
-	if (!baud)
-		/* pick a default, any default... */
-		baud = 9600;
-
-	mydbg("%s - got baud = %d\n", __func__, baud);
-
-	divisor = MAX_BAUD_RATE / baud;
-	remainder = MAX_BAUD_RATE % baud;
-	/* Round to nearest divisor */
-	if (((remainder * 2) >= baud) && (baud != 110))
-		divisor++;
-
-	/*
-	 * Set Baud rate to default and turn off (default)flow control here
-	 */
-	status = BoxSetUart(serial, index, (unsigned short)divisor, new_LCR);
-	if (status < 0) {
-		mydbg(__FILE__ "BoxSetUart failed\n");
-		return;
-	}
-
-	/* Now determine flow control */
-	if (cflag & CRTSCTS) {
-		mydbg("%s - Enabling HW flow control port %d\n", __func__,
-		      port->number);
-
-		/* Enable RTS/CTS flow control */
-		status = BoxSetHW_FlowCtrl(serial, index, 1);
-
-		if (status < 0) {
-			mydbg(__FILE__ "BoxSetHW_FlowCtrl failed\n");
-			return;
-		}
-	} else {
-		/* Disable RTS/CTS flow control */
-		mydbg("%s - disabling HW flow control port %d\n", __func__,
-		      port->number);
-
-		status = BoxSetHW_FlowCtrl(serial, index, 0);
-		if (status < 0) {
-			mydbg(__FILE__ "BoxSetHW_FlowCtrl failed\n");
-			return;
-		}
-
-	}
-
-	/* if we are implementing XON/XOFF, set the start and stop character in
-	 * the device */
-	if (I_IXOFF(tty) || I_IXON(tty)) {
-		unsigned char stop_char = STOP_CHAR(tty);
-		unsigned char start_char = START_CHAR(tty);
-		status =
-		    BoxSetSW_FlowCtrl(serial, index, stop_char,
-				      start_char);
-		if (status < 0)
-			mydbg(__FILE__ "BoxSetSW_FlowCtrl (enabled) failed\n");
-
-	} else {
-		/* disable SW flow control */
-		status = BoxDisable_SW_FlowCtrl(serial, index);
-		if (status < 0)
-			mydbg(__FILE__ "BoxSetSW_FlowCtrl (diabling) failed\n");
-
-	}
-	tty->termios->c_cflag &= ~CMSPAR;
-	/* FIXME: Error cases should be returning the actual bits changed only */
-}
-
-/****************************************************************************
-* BoxGetRegister
-*	issuse a GET_REGISTER vendor-spcific request on the default control pipe
-*	If successful, fills in the  pValue with the register value asked for
-****************************************************************************/
-static int BoxGetRegister(struct usb_serial *serial, unsigned short Uart_Number,
-			  unsigned short Register_Num, __u8 *pValue)
-{
-	int result;
-	__u16 current_length;
-
-	current_length = sizeof(struct qt_get_device_data);
-
-	result =
-	    usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
-			    QT_GET_SET_REGISTER, 0xC0, Register_Num,
-			    Uart_Number, (void *)pValue, sizeof(*pValue), 300);
-
-	return result;
-}
-
-/****************************************************************************
-* BoxSetRegister
-*	issuse a GET_REGISTER vendor-spcific request on the default control pipe
-*	If successful, fills in the  pValue with the register value asked for
-****************************************************************************/
-static int BoxSetRegister(struct usb_serial *serial, unsigned short Uart_Number,
-			  unsigned short Register_Num, unsigned short Value)
-{
-	int result;
-	unsigned short RegAndByte;
-
-	RegAndByte = Value;
-	RegAndByte = RegAndByte << 8;
-	RegAndByte = RegAndByte + Register_Num;
-
-/*
-	result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-				 QT_GET_SET_REGISTER, 0xC0, Register_Num,
-				 Uart_Number, NULL, 0, 300);
-*/
-
-	result =
-	    usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-			    QT_GET_SET_REGISTER, 0x40, RegAndByte, Uart_Number,
-			    NULL, 0, 300);
-
-	return result;
-}
-
-/**
- * box_get_device
- *   Issue a GET_DEVICE vendor-specific request on the default control pipe If
- *   successful, fills in the qt_get_device_data structure pointed to by
- *   device_data, otherwise return a negative error number of the problem.
- */
-static int box_get_device(struct usb_serial *serial,
-			  struct qt_get_device_data *device_data)
-{
-	int result;
-	__u16 current_length;
-	unsigned char *transfer_buffer;
-
-	current_length = sizeof(struct qt_get_device_data);
-	transfer_buffer = kmalloc(current_length, GFP_KERNEL);
-	if (!transfer_buffer)
-		return -ENOMEM;
-
-	result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
-				 QT_SET_GET_DEVICE, 0xc0, 0, 0,
-				 transfer_buffer, current_length, 300);
-	if (result > 0)
-		memcpy(device_data, transfer_buffer, current_length);
-	kfree(transfer_buffer);
-
-	return result;
-}
-
-/**
- * box_set_device
- *   Issue a SET_DEVICE vendor-specific request on the default control pipe If
- *   successful returns the number of bytes written, otherwise it returns a
- *   negative error number of the problem.
- */
-static int box_set_device(struct usb_serial *serial,
-			  struct qt_get_device_data *device_data)
-{
-	int result;
-	__u16 length;
-	__u16 PortSettings;
-
-	PortSettings = ((__u16) (device_data->portb));
-	PortSettings = (PortSettings << 8);
-	PortSettings += ((__u16) (device_data->porta));
-
-	length = sizeof(struct qt_get_device_data);
-	mydbg("%s - PortSettings = 0x%x\n", __func__, PortSettings);
-
-	result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-				 QT_SET_GET_DEVICE, 0x40, PortSettings,
-				 0, NULL, 0, 300);
-	return result;
-}
-
-/****************************************************************************
- * BoxOPenCloseChannel
- * This funciotn notifies the device that the device driver wishes to open a particular UART channel. its
- * purpose is to allow the device driver and the device to synchronize state information.
- * OpenClose = 1 for open , 0 for close
-  ****************************************************************************/
-static int BoxOPenCloseChannel(struct usb_serial *serial, __u16 Uart_Number,
-			       __u16 OpenClose,
-			       struct qt_open_channel_data *pDeviceData)
-{
-	int result;
-	__u16 length;
-	__u8 Direcion;
-	unsigned int pipe;
-	length = sizeof(struct qt_open_channel_data);
-
-	/* if opening... */
-	if (OpenClose == 1) {
-		Direcion = USBD_TRANSFER_DIRECTION_IN;
-		pipe = usb_rcvctrlpipe(serial->dev, 0);
-		result =
-		    usb_control_msg(serial->dev, pipe, QT_OPEN_CLOSE_CHANNEL,
-				    Direcion, OpenClose, Uart_Number,
-				    pDeviceData, length, 300);
-
-	} else {
-		Direcion = USBD_TRANSFER_DIRECTION_OUT;
-		pipe = usb_sndctrlpipe(serial->dev, 0);
-		result =
-		    usb_control_msg(serial->dev, pipe, QT_OPEN_CLOSE_CHANNEL,
-				    Direcion, OpenClose, Uart_Number, NULL, 0,
-				    300);
-
-	}
-
-	return result;
-}
-
-/****************************************************************************
- *  BoxSetPrebufferLevel
-   TELLS BOX WHEN TO ASSERT FLOW CONTROL
- ****************************************************************************/
-static int BoxSetPrebufferLevel(struct usb_serial *serial)
-{
-	int result;
-	__u16 buffer_length;
-
-	buffer_length = PREFUFF_LEVEL_CONSERVATIVE;
-	result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-				 QT_GET_SET_PREBUF_TRIG_LVL, 0x40,
-				 buffer_length, 0, NULL, 0, 300);
-	return result;
-}
-
-/****************************************************************************
- *  BoxSetATC
-   TELLS BOX WHEN TO ASSERT automatic transmitter control
-   ****************************************************************************/
-static int BoxSetATC(struct usb_serial *serial, __u16 n_Mode)
-{
-	int result;
-	__u16 buffer_length;
-
-	buffer_length = PREFUFF_LEVEL_CONSERVATIVE;
-
-	result =
-	    usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-			    QT_SET_ATF, 0x40, n_Mode, 0, NULL, 0, 300);
-
-	return result;
-}
-
-/****************************************************************************
-* BoxSetUart
-*	issuse a SET_UART vendor-spcific request on the default control pipe
-*	If successful sets baud rate divisor and LCR value
-****************************************************************************/
-static int BoxSetUart(struct usb_serial *serial, unsigned short Uart_Number,
-		      unsigned short default_divisor, unsigned char default_LCR)
-{
-	int result;
-	unsigned short UartNumandLCR;
-
-	UartNumandLCR = (default_LCR << 8) + Uart_Number;
-
-	result =
-	    usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-			    QT_GET_SET_UART, 0x40, default_divisor,
-			    UartNumandLCR, NULL, 0, 300);
-
-	return result;
-}
-
-static int BoxSetHW_FlowCtrl(struct usb_serial *serial, unsigned int index,
-			     int bSet)
-{
-	__u8 mcr = 0;
-	__u8 msr = 0, MOUT_Value = 0;
-	struct usb_serial_port *port;
-	unsigned int status;
-
-	port = serial->port;
-
-	if (bSet == 1) {
-		/* flow control, box will clear RTS line to prevent remote */
-		mcr = SERIAL_MCR_RTS;
-	}			/* device from xmitting more chars */
-	else {
-		/* no flow control to remote device */
-		mcr = 0;
-
-	}
-	MOUT_Value = mcr << 8;
-
-	if (bSet == 1) {
-		/* flow control, box will inhibit xmit data if CTS line is
-		 * asserted */
-		msr = SERIAL_MSR_CTS;
-	} else {
-		/* Box will not inhimbe xmit data due to CTS line */
-		msr = 0;
-	}
-	MOUT_Value |= msr;
-
-	status =
-	    usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-			    QT_HW_FLOW_CONTROL_MASK, 0x40, MOUT_Value,
-			    index, NULL, 0, 300);
-	return status;
-
-}
-
-static int BoxSetSW_FlowCtrl(struct usb_serial *serial, __u16 index,
-			     unsigned char stop_char, unsigned char start_char)
-{
-	__u16 nSWflowout;
-	int result;
-
-	nSWflowout = start_char << 8;
-	nSWflowout = (unsigned short)stop_char;
-
-	result =
-	    usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-			    QT_SW_FLOW_CONTROL_MASK, 0x40, nSWflowout,
-			    index, NULL, 0, 300);
-	return result;
-
-}
-static int BoxDisable_SW_FlowCtrl(struct usb_serial *serial, __u16 index)
-{
-	int result;
-
-	result =
-	    usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-			    QT_SW_FLOW_CONTROL_DISABLE, 0x40, 0, index,
-			    NULL, 0, 300);
-	return result;
-
-}
-
-static void serial_throttle(struct tty_struct *tty)
-{
-	struct usb_serial_port *port =
-	    tty->driver_data;
-	struct usb_serial *serial = get_usb_serial(port, __func__);
-	mydbg("%s - port %d\n", __func__, port->number);
-
-	if (!serial)
-		return;
-
-	down(&port->sem);
-
-	if (!port->open_count) {
-		mydbg("%s - port not open\n", __func__);
-		goto exit;
-	}
-	/* shut down any bulk reads that may be going on */
-/*	usb_unlink_urb (port->read_urb); */
-	/* pass on to the driver specific version of this function */
-	port->RxHolding = 1;
-	mydbg("%s - port->RxHolding = 1\n", __func__);
-
-exit:
-	up(&port->sem);
-	return;
-}
-
-static void serial_unthrottle(struct tty_struct *tty)
-{
-	struct usb_serial_port *port =
-	    tty->driver_data;
-	struct usb_serial *serial = get_usb_serial(port, __func__);
-	unsigned int result;
-
-	if (!serial)
-		return;
-	down(&port->sem);
-
-	mydbg("%s - port %d\n", __func__, port->number);
-
-	if (!port->open_count) {
-		mydbg("%s - port not open\n", __func__);
-		goto exit;
-	}
-
-	if (port->RxHolding == 1) {
-		mydbg("%s -port->RxHolding == 1\n", __func__);
-
-		port->RxHolding = 0;
-		mydbg("%s - port->RxHolding = 0\n", __func__);
-
-		/* if we have a bulk endpoint, start it up */
-		if ((serial->num_bulk_in) && (port->ReadBulkStopped == 1)) {
-			/* Start reading from the device */
-			usb_fill_bulk_urb(port->read_urb, serial->dev,
-					  usb_rcvbulkpipe(serial->dev,
-							  port->
-							  bulk_in_endpointAddress),
-					  port->read_urb->transfer_buffer,
-					  port->read_urb->
-					  transfer_buffer_length,
-					  qt_read_bulk_callback, port);
-			result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
-			if (result)
-				err("%s - failed restarting read urb, error %d",
-				    __func__, result);
-		}
-	}
-exit:
-	up(&port->sem);
-	return;
-
-}
-
-static int serial_break(struct tty_struct *tty, int break_state)
-{
-	struct usb_serial_port *port = tty->driver_data;
-	struct usb_serial *serial = get_usb_serial(port, __func__);
-	u16 index, onoff;
-	unsigned int result;
-
-	index = tty->index - serial->minor;
-	if (!serial)
-		return -ENODEV;
-
-	if (break_state == -1)
-		onoff = 1;
-	else
-		onoff = 0;
-
-	down(&port->sem);
-
-	mydbg("%s - port %d\n", __func__, port->number);
-
-	if (!port->open_count) {
-		mydbg("%s - port not open\n", __func__);
-		goto exit;
-	}
-
-	result =
-	    usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
-			    QT_BREAK_CONTROL, 0x40, onoff, index,
-			    NULL, 0, 300);
-
-exit:
-	up(&port->sem);
-	return 0;
-}
-
-static int ioctl_serial_usb(struct inode *innod, struct file *filp, unsigned int cmd,
-		     unsigned long arg)
-{
-
-	unsigned err;
-	unsigned ucOPR_NewValue, uc_Value;
-	int *p_Num_of_adapters, counts, index, *p_QMCR_Value;
-	struct identity *p_Identity_of;
-	struct identity Identity_of;
-	struct usb_serial *lastserial, *serial;
-
-	mydbg(KERN_DEBUG "ioctl_serial_usb  cmd =\n");
-	if (_IOC_TYPE(cmd) != SERIALQT_PCI_IOC_MAGIC)
-		return -ENOTTY;
-	if (_IOC_NR(cmd) > SERIALQT_IOC_MAXNR)
-		return -ENOTTY;
-	mydbg(KERN_DEBUG "ioctl_serial_usb  cmd = 0x%x\n", cmd);
-	err = 0;
-	switch (cmd) {
-
-	case SERIALQT_WRITE_QMCR:
-		err = -ENOTTY;
-		index = arg >> 16;
-		counts = 0;
-
-		ucOPR_NewValue = arg;
-
-		err = EmulateWriteQMCR_Reg(index, ucOPR_NewValue);
-		break;
-
-	case SERIALQT_READ_QMCR:
-		err = -ENOTTY;
-		p_QMCR_Value = (int *)arg;
-		index = arg >> 16;
-		counts = 0;
-
-		err = EmulateReadQMCR_Reg(index, &uc_Value);
-		if (err == 0)
-			err = put_user(uc_Value, p_QMCR_Value);
-		break;
-
-	case SERIALQT_GET_NUMOF_UNITS:
-		p_Num_of_adapters = (int *)arg;
-		counts = 0;	/* Initialize counts to zero */
-		/* struct usb_serial *lastserial = serial_table[0], *serial; */
-		lastserial = serial_table[0];
-
-		mydbg(KERN_DEBUG "SERIALQT_GET_NUMOF_UNITS \n");
-		/* if first pointer is nonull, we at least have one box */
-		if (lastserial)
-			counts = 1;	/* we at least have one box */
-
-		for (index = 1; index < SERIAL_TTY_MINORS; index++) {
-			serial = serial_table[index];
-			if (serial) {
-				if (serial != lastserial) {
-					/* we had a change in the array, hence
-					 * another box is there */
-					lastserial = serial;
-					counts++;
-				}
-			} else
-				break;
-		}
-
-		mydbg(KERN_DEBUG "ioctl_serial_usb writting counts = %d",
-		      counts);
-
-		err = put_user(counts, p_Num_of_adapters);
-
-		break;
-	case SERIALQT_GET_THIS_UNIT:
-		counts = 0;
-		p_Identity_of = (struct identity *)arg;
-		/* copy user structure to local variable */
-		get_user(Identity_of.index, &p_Identity_of->index);
-		mydbg(KERN_DEBUG "SERIALQT_GET_THIS_UNIT Identity_of.index\n");
-		mydbg(KERN_DEBUG
-		      "SERIALQT_GET_THIS_UNIT Identity_of.index= 0x%x\n",
-		      Identity_of.index);
-
-		err = -ENOTTY;
-		serial = find_the_box(Identity_of.index);
-		if (serial) {
-			err =
-			    put_user(serial->product,
-				     &p_Identity_of->n_identity);
-
-		}
-		break;
-
-	case SERIALQT_IS422_EXTENDED:
-		err = -ENOTTY;
-		mydbg(KERN_DEBUG "SERIALQT_IS422_EXTENDED \n");
-		index = arg >> 16;
-
-		counts = 0;
-
-		mydbg(KERN_DEBUG
-		      "SERIALQT_IS422_EXTENDED, looking Identity_of.indext = 0x%x\n",
-		      index);
-		serial = find_the_box(index);
-		if (serial) {
-			mydbg("%s index = 0x%x, serial = 0x%p\n", __func__,
-			      index, serial);
-			for (counts = 0; serqt_422_table[counts] != 0; counts++) {
-
-				mydbg
-				    ("%s serial->product = = 0x%x, serqt_422_table[counts] = 0x%x\n",
-				     __func__, serial->product,
-				     serqt_422_table[counts]);
-				if (serial->product == serqt_422_table[counts]) {
-					err = 0;
-
-					mydbg
-					    ("%s found match for 422extended\n",
-					     __func__);
-					break;
-				}
-			}
-		}
-		break;
-
-	default:
-		err = -ENOTTY;
-	}
-
-	mydbg("%s returning err = 0x%x\n", __func__, err);
-	return err;
-}
-
-static struct usb_serial *find_the_box(unsigned int index)
-{
-	struct usb_serial *lastserial, *foundserial, *serial;
-	int counts = 0, index2;
-	lastserial = serial_table[0];
-	foundserial = NULL;
-	for (index2 = 0; index2 < SERIAL_TTY_MINORS; index2++) {
-		serial = serial_table[index2];
-
-		mydbg("%s index = 0x%x, index2 = 0x%x, serial = 0x%p\n",
-		      __func__, index, index2, serial);
-
-		if (serial) {
-			/* first see if this is the unit we'er looking for */
-			mydbg
-			    ("%s inside if(serial) counts = 0x%x , index = 0x%x\n",
-			     __func__, counts, index);
-			if (counts == index) {
-				/* we found the one we're looking for, copythe
-				 * product Id to user */
-				mydbg("%s we found the one we're looking for serial = 0x%p\n",
-				     __func__, serial);
-				foundserial = serial;
-				break;
-			}
-
-			if (serial != lastserial) {
-				/* when we have a change in the pointer */
-				lastserial = serial;
-				counts++;
-			}
-		} else
-			break;	/* no matches */
-	}
-
-	mydbg("%s returning foundserial = 0x%p\n", __func__, foundserial);
-	return foundserial;
-}
-
-static int EmulateWriteQMCR_Reg(int index, unsigned uc_value)
-{
-
-	__u16 ATC_Mode = 0;
-	struct usb_serial *serial;
-	int status;
-	struct qt_get_device_data DeviceData;
-	unsigned uc_temp = 0;
-	mydbg("Inside %s, uc_value = 0x%x\n", __func__, uc_value);
-
-	DeviceData.porta = 0;
-	DeviceData.portb = 0;
-	serial = find_the_box(index);
-	/* Determine Duplex mode */
-	if (!(serial))
-		return -ENOTTY;
-	status = box_get_device(serial, &DeviceData);
-	if (status < 0) {
-		mydbg(__FILE__ "box_set_device failed\n");
-		return status;
-	}
-
-	uc_temp = uc_value & QMCR_HALF_DUPLEX_MASK;
-	switch (uc_temp) {
-	case QMCR_FULL_DUPLEX:
-		DeviceData.porta &= ~DUPMODE_BITS;
-		DeviceData.porta |= FULL_DUPLEX;
-		ATC_Mode = ATC_DISABLED;
-		break;
-	case QMCR_HALF_DUPLEX_RTS:
-		DeviceData.porta &= ~DUPMODE_BITS;
-		DeviceData.porta |= HALF_DUPLEX_RTS;
-		ATC_Mode = ATC_RTS_ENABLED;
-		break;
-	case QMCR_HALF_DUPLEX_DTR:
-		DeviceData.porta &= ~DUPMODE_BITS;
-		DeviceData.porta |= HALF_DUPLEX_DTR;
-		ATC_Mode = ATC_DTR_ENABLED;
-		break;
-	default:
-		break;
-	}
-
-	uc_temp = uc_value & QMCR_CONNECTOR_MASK;
-	switch (uc_temp) {
-	case QMCR_MODEM_CONTROL:
-		DeviceData.portb &= ~LOOPMODE_BITS;	/* reset connection bits */
-		DeviceData.portb |= MODEM_CTRL;
-		break;
-	case QMCR_ALL_LOOPBACK:
-		DeviceData.portb &= ~LOOPMODE_BITS;	/* reset connection bits */
-		DeviceData.portb |= ALL_LOOPBACK;
-		break;
-	}
-
-	mydbg(__FILE__ "Calling box_set_device with failed\n");
-	status = box_set_device(serial, &DeviceData);
-	if (status < 0) {
-		mydbg(__FILE__ "box_set_device failed\n");
-		return status;
-	}
-
-	/* This bit (otherwise unused) i'll used  to detect whether ATC is
-	 * selected */
-	if (uc_value & QMCR_RX_EN_MASK) {
-
-		mydbg(__FILE__
-		      "calling BoxsetATC with DeviceData.porta = 0x%x and DeviceData.portb = 0x%x\n",
-		      DeviceData.porta, DeviceData.portb);
-		status = BoxSetATC(serial, ATC_Mode);
-		if (status < 0) {
-			mydbg(__FILE__ "BoxSetATC failed\n");
-			return status;
-		}
-	} else {
-
-		mydbg(__FILE__
-		      "calling BoxsetATC with DeviceData.porta = 0x%x and DeviceData.portb = 0x%x\n",
-		      DeviceData.porta, DeviceData.portb);
-		status = BoxSetATC(serial, ATC_DISABLED);
-		if (status < 0) {
-			mydbg(__FILE__ "BoxSetATC failed\n");
-			return status;
-		}
-	}
-
-	return 0;
-
-}
-
-static int EmulateReadQMCR_Reg(int index, unsigned *uc_value)
-{
-	struct usb_serial *serial;
-	int status;
-	struct qt_get_device_data DeviceData;
-	__u8 uc_temp;
-
-	*uc_value = 0;
-
-	serial = find_the_box(index);
-	if (!(serial))
-		return -ENOTTY;
-
-	status = box_get_device(serial, &DeviceData);
-	if (status < 0) {
-		mydbg(__FILE__ "box_get_device failed\n");
-		return status;
-	}
-	uc_temp = DeviceData.porta & DUPMODE_BITS;
-	switch (uc_temp) {
-	case FULL_DUPLEX:
-		*uc_value |= QMCR_FULL_DUPLEX;
-		break;
-	case HALF_DUPLEX_RTS:
-		*uc_value |= QMCR_HALF_DUPLEX_RTS;
-		break;
-	case HALF_DUPLEX_DTR:
-		*uc_value |= QMCR_HALF_DUPLEX_DTR;
-		break;
-	default:
-		break;
-	}
-
-	/* I use this for ATC control se */
-	uc_temp = DeviceData.portb & LOOPMODE_BITS;
-
-	switch (uc_temp) {
-	case ALL_LOOPBACK:
-		*uc_value |= QMCR_ALL_LOOPBACK;
-		break;
-	case MODEM_CTRL:
-		*uc_value |= QMCR_MODEM_CONTROL;
-		break;
-	default:
-		break;
-
-	}
-	return 0;
-
-}
-
-static int __init serqt_usb_init(void)
-{
-	int i, result;
-	int status = 0;
-
-	mydbg("%s\n", __func__);
-	tty_set_operations(&serial_tty_driver, &serial_ops);
-	result = tty_register_driver(&serial_tty_driver);
-	if (result) {
-		mydbg("tty_register_driver failed error = 0x%x", result);
-		return result;
-	}
-
-	/* Initalize our global data */
-	for (i = 0; i < SERIAL_TTY_MINORS; ++i)
-		serial_table[i] = NULL;
-
-	/* register this driver with the USB subsystem */
-	result = usb_register(&serqt_usb_driver);
-	if (result < 0) {
-		err("usb_register failed for the " __FILE__
-		    " driver. Error number %d", result);
-		return result;
-	}
-	status = 0;		/* Dynamic assignment of major number */
-	major_number =
-	    register_chrdev(status, "SerialQT_USB", &serialqt_usb_fops);
-	if (major_number < 0) {
-		mydbg(KERN_DEBUG "No devices found \n\n");
-		return -EBUSY;
-	} else
-		mydbg(KERN_DEBUG "SerQT_USB major number assignment = %d \n\n",
-		      major_number);
-
-	printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION);
-	return 0;
-}
-
-static void __exit serqt_usb_exit(void)
-{
-	/* deregister this driver with the USB subsystem */
-	usb_deregister(&serqt_usb_driver);
-	tty_unregister_driver(&serial_tty_driver);
-	unregister_chrdev(major_number, "SerialQT_USB");
-}
-
-module_init(serqt_usb_init);
-module_exit(serqt_usb_exit);
-
-MODULE_AUTHOR(DRIVER_AUTHOR);
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_LICENSE("GPL");