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/*
* Belkin USB Serial Adapter Driver
*
* Copyright (C) 2000
* William Greathouse (wgreathouse@smva.com)
*
* This program is largely derived from work by the linux-usb group
* and associated source files. Please see the usb/serial files for
* individual credits and copyrights.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* See Documentation/usb/usb-serial.txt for more information on using this driver
*
* TODO:
* -- Add true modem contol line query capability. Currently we track the
* states reported by the interrupt and the states we request.
* -- Add error reporting back to application for UART error conditions.
* Just point me at how to implement this and I'll do it. I've put the
* framework in, but haven't analyzed the "tty_flip" interface yet.
* -- Add support for flush commands
* -- Add everything that is missing :)
*
* 30-May-2001 gkh
* switched from using spinlock to a semaphore, which fixes lots of problems.
*
* 08-Apr-2001 gb
* - Identify version on module load.
*
* 12-Mar-2001 gkh
* - Added support for the GoHubs GO-COM232 device which is the same as the
* Peracom device.
*
* 06-Nov-2000 gkh
* - Added support for the old Belkin and Peracom devices.
* - Made the port able to be opened multiple times.
* - Added some defaults incase the line settings are things these devices
* can't support.
*
* 18-Oct-2000 William Greathouse
* Released into the wild (linux-usb-devel)
*
* 17-Oct-2000 William Greathouse
* Add code to recognize firmware version and set hardware flow control
* appropriately. Belkin states that firmware prior to 3.05 does not
* operate correctly in hardware handshake mode. I have verified this
* on firmware 2.05 -- for both RTS and DTR input flow control, the control
* line is not reset. The test performed by the Belkin Win* driver is
* to enable hardware flow control for firmware 2.06 or greater and
* for 1.00 or prior. I am only enabling for 2.06 or greater.
*
* 12-Oct-2000 William Greathouse
* First cut at supporting Belkin USB Serial Adapter F5U103
* I did not have a copy of the original work to support this
* adapter, so pardon any stupid mistakes. All of the information
* I am using to write this driver was acquired by using a modified
* UsbSnoop on Windows2000 and from examining the other USB drivers.
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/signal.h>
#include <linux/errno.h>
#include <linux/poll.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/fcntl.h>
#include <linux/tty.h>
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/usb.h>
#ifdef CONFIG_USB_SERIAL_DEBUG
static int debug = 1;
#else
static int debug;
#endif
#include "usb-serial.h"
#include "belkin_sa.h"
/*
* Version Information
*/
#define DRIVER_VERSION "v1.1"
#define DRIVER_AUTHOR "William Greathouse <wgreathouse@smva.com>"
#define DRIVER_DESC "USB Belkin Serial converter driver"
/* function prototypes for a Belkin USB Serial Adapter F5U103 */
static int belkin_sa_startup (struct usb_serial *serial);
static void belkin_sa_shutdown (struct usb_serial *serial);
static int belkin_sa_open (struct usb_serial_port *port, struct file *filp);
static void belkin_sa_close (struct usb_serial_port *port, struct file *filp);
static void belkin_sa_read_int_callback (struct urb *urb);
static void belkin_sa_set_termios (struct usb_serial_port *port, struct termios * old);
static int belkin_sa_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg);
static void belkin_sa_break_ctl (struct usb_serial_port *port, int break_state );
static __devinitdata struct usb_device_id id_table_combined [] = {
{ USB_DEVICE(BELKIN_SA_VID, BELKIN_SA_PID) },
{ USB_DEVICE(BELKIN_OLD_VID, BELKIN_OLD_PID) },
{ USB_DEVICE(PERACOM_VID, PERACOM_PID) },
{ USB_DEVICE(GOHUBS_VID, GOHUBS_PID) },
{ USB_DEVICE(BELKIN_DOCKSTATION_VID, BELKIN_DOCKSTATION_PID) },
{ } /* Terminating entry */
};
static __devinitdata struct usb_device_id belkin_dockstation_table [] = {
{ USB_DEVICE(BELKIN_DOCKSTATION_VID, BELKIN_DOCKSTATION_PID) },
{ } /* Terminating entry */
};
static __devinitdata struct usb_device_id belkin_sa_table [] = {
{ USB_DEVICE(BELKIN_SA_VID, BELKIN_SA_PID) },
{ } /* Terminating entry */
};
static __devinitdata struct usb_device_id belkin_old_table [] = {
{ USB_DEVICE(BELKIN_OLD_VID, BELKIN_OLD_PID) },
{ } /* Terminating entry */
};
static __devinitdata struct usb_device_id peracom_table [] = {
{ USB_DEVICE(PERACOM_VID, PERACOM_PID) },
{ } /* Terminating entry */
};
static __devinitdata struct usb_device_id gocom232_table [] = {
{ USB_DEVICE(GOHUBS_VID, GOHUBS_PID) },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE (usb, id_table_combined);
/* All of the device info needed for the Belkin dockstation serial converter */
static struct usb_serial_device_type belkin_dockstation_device = {
name: "Belkin F5U120-PC USB Serial Adapter",
id_table: belkin_dockstation_table, /* the Belkin F5U103 device */
needs_interrupt_in: MUST_HAVE, /* this device must have an interrupt in endpoint */
needs_bulk_in: MUST_HAVE, /* this device must have a bulk in endpoint */
needs_bulk_out: MUST_HAVE, /* this device must have a bulk out endpoint */
num_interrupt_in: 1,
num_bulk_in: 1,
num_bulk_out: 1,
num_ports: 1,
open: belkin_sa_open,
close: belkin_sa_close,
read_int_callback: belkin_sa_read_int_callback, /* How we get the status info */
ioctl: belkin_sa_ioctl,
set_termios: belkin_sa_set_termios,
break_ctl: belkin_sa_break_ctl,
startup: belkin_sa_startup,
shutdown: belkin_sa_shutdown,
};
/* All of the device info needed for the Belkin serial converter */
static struct usb_serial_device_type belkin_sa_device = {
name: "Belkin F5U103 USB Serial Adapter",
id_table: belkin_sa_table, /* the Belkin F5U103 device */
needs_interrupt_in: MUST_HAVE, /* this device must have an interrupt in endpoint */
needs_bulk_in: MUST_HAVE, /* this device must have a bulk in endpoint */
needs_bulk_out: MUST_HAVE, /* this device must have a bulk out endpoint */
num_interrupt_in: 1,
num_bulk_in: 1,
num_bulk_out: 1,
num_ports: 1,
open: belkin_sa_open,
close: belkin_sa_close,
read_int_callback: belkin_sa_read_int_callback, /* How we get the status info */
ioctl: belkin_sa_ioctl,
set_termios: belkin_sa_set_termios,
break_ctl: belkin_sa_break_ctl,
startup: belkin_sa_startup,
shutdown: belkin_sa_shutdown,
};
/* This driver also supports the "old" school Belkin single port adaptor */
static struct usb_serial_device_type belkin_old_device = {
name: "Belkin USB Serial Adapter",
id_table: belkin_old_table, /* the old Belkin device */
needs_interrupt_in: MUST_HAVE, /* this device must have an interrupt in endpoint */
needs_bulk_in: MUST_HAVE, /* this device must have a bulk in endpoint */
needs_bulk_out: MUST_HAVE, /* this device must have a bulk out endpoint */
num_interrupt_in: 1,
num_bulk_in: 1,
num_bulk_out: 1,
num_ports: 1,
open: belkin_sa_open,
close: belkin_sa_close,
read_int_callback: belkin_sa_read_int_callback, /* How we get the status info */
ioctl: belkin_sa_ioctl,
set_termios: belkin_sa_set_termios,
break_ctl: belkin_sa_break_ctl,
startup: belkin_sa_startup,
shutdown: belkin_sa_shutdown,
};
/* this driver also works for the Peracom single port adapter */
static struct usb_serial_device_type peracom_device = {
name: "Peracom single port USB Serial Adapter",
id_table: peracom_table, /* the Peracom device */
needs_interrupt_in: MUST_HAVE, /* this device must have an interrupt in endpoint */
needs_bulk_in: MUST_HAVE, /* this device must have a bulk in endpoint */
needs_bulk_out: MUST_HAVE, /* this device must have a bulk out endpoint */
num_interrupt_in: 1,
num_bulk_in: 1,
num_bulk_out: 1,
num_ports: 1,
open: belkin_sa_open,
close: belkin_sa_close,
read_int_callback: belkin_sa_read_int_callback, /* How we get the status info */
ioctl: belkin_sa_ioctl,
set_termios: belkin_sa_set_termios,
break_ctl: belkin_sa_break_ctl,
startup: belkin_sa_startup,
shutdown: belkin_sa_shutdown,
};
/* the GoHubs Go-COM232 device is the same as the Peracom single port adapter */
static struct usb_serial_device_type gocom232_device = {
name: "GO-COM232 USB Serial Converter",
id_table: gocom232_table, /* the GO-COM232 device */
needs_interrupt_in: MUST_HAVE, /* this device must have an interrupt in endpoint */
needs_bulk_in: MUST_HAVE, /* this device must have a bulk in endpoint */
needs_bulk_out: MUST_HAVE, /* this device must have a bulk out endpoint */
num_interrupt_in: 1,
num_bulk_in: 1,
num_bulk_out: 1,
num_ports: 1,
open: belkin_sa_open,
close: belkin_sa_close,
read_int_callback: belkin_sa_read_int_callback, /* How we get the status info */
ioctl: belkin_sa_ioctl,
set_termios: belkin_sa_set_termios,
break_ctl: belkin_sa_break_ctl,
startup: belkin_sa_startup,
shutdown: belkin_sa_shutdown,
};
struct belkin_sa_private {
unsigned long control_state;
unsigned char last_lsr;
unsigned char last_msr;
int bad_flow_control;
};
/*
* ***************************************************************************
* Belkin USB Serial Adapter F5U103 specific driver functions
* ***************************************************************************
*/
#define WDR_TIMEOUT (HZ * 5 ) /* default urb timeout */
/* assumes that struct usb_serial *serial is available */
#define BSA_USB_CMD(c,v) usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), \
(c), BELKIN_SA_SET_REQUEST_TYPE, \
(v), 0, NULL, 0, WDR_TIMEOUT)
/* do some startup allocations not currently performed by usb_serial_probe() */
static int belkin_sa_startup (struct usb_serial *serial)
{
struct usb_device *dev = serial->dev;
struct belkin_sa_private *priv;
/* allocate the private data structure */
serial->port->private = kmalloc(sizeof(struct belkin_sa_private), GFP_KERNEL);
if (!serial->port->private)
return (-1); /* error */
priv = (struct belkin_sa_private *)serial->port->private;
/* set initial values for control structures */
priv->control_state = 0;
priv->last_lsr = 0;
priv->last_msr = 0;
/* see comments at top of file */
priv->bad_flow_control = (dev->descriptor.bcdDevice <= 0x0206) ? 1 : 0;
info("bcdDevice: %04x, bfc: %d", dev->descriptor.bcdDevice, priv->bad_flow_control);
init_waitqueue_head(&serial->port->write_wait);
return (0);
}
static void belkin_sa_shutdown (struct usb_serial *serial)
{
int i;
dbg (__FUNCTION__);
/* stop reads and writes on all ports */
for (i=0; i < serial->num_ports; ++i) {
while (serial->port[i].open_count > 0) {
belkin_sa_close (&serial->port[i], NULL);
}
/* My special items, the standard routines free my urbs */
if (serial->port[i].private)
kfree(serial->port[i].private);
}
}
static int belkin_sa_open (struct usb_serial_port *port, struct file *filp)
{
int retval = 0;
dbg(__FUNCTION__" port %d", port->number);
down (&port->sem);
++port->open_count;
MOD_INC_USE_COUNT;
if (!port->active) {
port->active = 1;
/*Start reading from the device*/
/* TODO: Look at possibility of submitting mulitple URBs to device to
* enhance buffering. Win trace shows 16 initial read URBs.
*/
port->read_urb->dev = port->serial->dev;
retval = usb_submit_urb(port->read_urb);
if (retval) {
err("usb_submit_urb(read bulk) failed");
goto exit;
}
port->interrupt_in_urb->dev = port->serial->dev;
retval = usb_submit_urb(port->interrupt_in_urb);
if (retval)
err(" usb_submit_urb(read int) failed");
}
exit:
up (&port->sem);
return retval;
} /* belkin_sa_open */
static void belkin_sa_close (struct usb_serial_port *port, struct file *filp)
{
struct usb_serial *serial;
if (port_paranoia_check (port, __FUNCTION__))
return;
serial = get_usb_serial (port, __FUNCTION__);
if (!serial)
return;
dbg(__FUNCTION__" port %d", port->number);
down (&port->sem);
--port->open_count;
if (port->open_count <= 0) {
if (serial->dev) {
/* shutdown our bulk reads and writes */
usb_unlink_urb (port->write_urb);
usb_unlink_urb (port->read_urb);
usb_unlink_urb (port->interrupt_in_urb);
}
port->active = 0;
}
up (&port->sem);
MOD_DEC_USE_COUNT;
} /* belkin_sa_close */
static void belkin_sa_read_int_callback (struct urb *urb)
{
struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
struct belkin_sa_private *priv;
struct usb_serial *serial;
unsigned char *data = urb->transfer_buffer;
/* the urb might have been killed. */
if (urb->status)
return;
if (port_paranoia_check (port, __FUNCTION__)) return;
serial = port->serial;
if (serial_paranoia_check (serial, __FUNCTION__)) return;
usb_serial_debug_data (__FILE__, __FUNCTION__, urb->actual_length, data);
/* Handle known interrupt data */
/* ignore data[0] and data[1] */
priv = (struct belkin_sa_private *)port->private;
priv->last_msr = data[BELKIN_SA_MSR_INDEX];
/* Record Control Line states */
if (priv->last_msr & BELKIN_SA_MSR_DSR)
priv->control_state |= TIOCM_DSR;
else
priv->control_state &= ~TIOCM_DSR;
if (priv->last_msr & BELKIN_SA_MSR_CTS)
priv->control_state |= TIOCM_CTS;
else
priv->control_state &= ~TIOCM_CTS;
if (priv->last_msr & BELKIN_SA_MSR_RI)
priv->control_state |= TIOCM_RI;
else
priv->control_state &= ~TIOCM_RI;
if (priv->last_msr & BELKIN_SA_MSR_CD)
priv->control_state |= TIOCM_CD;
else
priv->control_state &= ~TIOCM_CD;
/* Now to report any errors */
priv->last_lsr = data[BELKIN_SA_LSR_INDEX];
#if 0
/*
* fill in the flip buffer here, but I do not know the relation
* to the current/next receive buffer or characters. I need
* to look in to this before committing any code.
*/
if (priv->last_lsr & BELKIN_SA_LSR_ERR) {
tty = port->tty;
/* Overrun Error */
if (priv->last_lsr & BELKIN_SA_LSR_OE) {
}
/* Parity Error */
if (priv->last_lsr & BELKIN_SA_LSR_PE) {
}
/* Framing Error */
if (priv->last_lsr & BELKIN_SA_LSR_FE) {
}
/* Break Indicator */
if (priv->last_lsr & BELKIN_SA_LSR_BI) {
}
}
#endif
/* INT urbs are automatically re-submitted */
}
static void belkin_sa_set_termios (struct usb_serial_port *port, struct termios *old_termios)
{
struct usb_serial *serial = port->serial;
struct belkin_sa_private *priv = (struct belkin_sa_private *)port->private;
unsigned int iflag = port->tty->termios->c_iflag;
unsigned int cflag = port->tty->termios->c_cflag;
unsigned int old_iflag = old_termios->c_iflag;
unsigned int old_cflag = old_termios->c_cflag;
__u16 urb_value = 0; /* Will hold the new flags */
/* Set the baud rate */
if( (cflag&CBAUD) != (old_cflag&CBAUD) ) {
/* reassert DTR and (maybe) RTS on transition from B0 */
if( (old_cflag&CBAUD) == B0 ) {
priv->control_state |= (TIOCM_DTR|TIOCM_RTS);
if (BSA_USB_CMD(BELKIN_SA_SET_DTR_REQUEST, 1) < 0)
err("Set DTR error");
/* don't set RTS if using hardware flow control */
if (!(old_cflag&CRTSCTS) )
if (BSA_USB_CMD(BELKIN_SA_SET_RTS_REQUEST, 1) < 0)
err("Set RTS error");
}
switch(cflag & CBAUD) {
case B0: /* handled below */ break;
case B300: urb_value = BELKIN_SA_BAUD(300); break;
case B600: urb_value = BELKIN_SA_BAUD(600); break;
case B1200: urb_value = BELKIN_SA_BAUD(1200); break;
case B2400: urb_value = BELKIN_SA_BAUD(2400); break;
case B4800: urb_value = BELKIN_SA_BAUD(4800); break;
case B9600: urb_value = BELKIN_SA_BAUD(9600); break;
case B19200: urb_value = BELKIN_SA_BAUD(19200); break;
case B38400: urb_value = BELKIN_SA_BAUD(38400); break;
case B57600: urb_value = BELKIN_SA_BAUD(57600); break;
case B115200: urb_value = BELKIN_SA_BAUD(115200); break;
case B230400: urb_value = BELKIN_SA_BAUD(230400); break;
default: err("BELKIN USB Serial Adapter: unsupported baudrate request, using default of 9600");
urb_value = BELKIN_SA_BAUD(9600); break;
}
if ((cflag & CBAUD) != B0 ) {
if (BSA_USB_CMD(BELKIN_SA_SET_BAUDRATE_REQUEST, urb_value) < 0)
err("Set baudrate error");
} else {
/* Disable flow control */
if (BSA_USB_CMD(BELKIN_SA_SET_FLOW_CTRL_REQUEST, BELKIN_SA_FLOW_NONE) < 0)
err("Disable flowcontrol error");
/* Drop RTS and DTR */
priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS);
if (BSA_USB_CMD(BELKIN_SA_SET_DTR_REQUEST, 0) < 0)
err("DTR LOW error");
if (BSA_USB_CMD(BELKIN_SA_SET_RTS_REQUEST, 0) < 0)
err("RTS LOW error");
}
}
/* set the parity */
if( (cflag&(PARENB|PARODD)) != (old_cflag&(PARENB|PARODD)) ) {
if (cflag & PARENB)
urb_value = (cflag & PARODD) ? BELKIN_SA_PARITY_ODD : BELKIN_SA_PARITY_EVEN;
else
urb_value = BELKIN_SA_PARITY_NONE;
if (BSA_USB_CMD(BELKIN_SA_SET_PARITY_REQUEST, urb_value) < 0)
err("Set parity error");
}
/* set the number of data bits */
if( (cflag&CSIZE) != (old_cflag&CSIZE) ) {
switch (cflag & CSIZE) {
case CS5: urb_value = BELKIN_SA_DATA_BITS(5); break;
case CS6: urb_value = BELKIN_SA_DATA_BITS(6); break;
case CS7: urb_value = BELKIN_SA_DATA_BITS(7); break;
case CS8: urb_value = BELKIN_SA_DATA_BITS(8); break;
default: err("CSIZE was not CS5-CS8, using default of 8");
urb_value = BELKIN_SA_DATA_BITS(8);
break;
}
if (BSA_USB_CMD(BELKIN_SA_SET_DATA_BITS_REQUEST, urb_value) < 0)
err("Set data bits error");
}
/* set the number of stop bits */
if( (cflag&CSTOPB) != (old_cflag&CSTOPB) ) {
urb_value = (cflag & CSTOPB) ? BELKIN_SA_STOP_BITS(2) : BELKIN_SA_STOP_BITS(1);
if (BSA_USB_CMD(BELKIN_SA_SET_STOP_BITS_REQUEST, urb_value) < 0)
err("Set stop bits error");
}
/* Set flow control */
if( (iflag&IXOFF) != (old_iflag&IXOFF)
|| (iflag&IXON) != (old_iflag&IXON)
|| (cflag&CRTSCTS) != (old_cflag&CRTSCTS) ) {
urb_value = 0;
if ((iflag & IXOFF) || (iflag & IXON))
urb_value |= (BELKIN_SA_FLOW_OXON | BELKIN_SA_FLOW_IXON);
else
urb_value &= ~(BELKIN_SA_FLOW_OXON | BELKIN_SA_FLOW_IXON);
if (cflag & CRTSCTS)
urb_value |= (BELKIN_SA_FLOW_OCTS | BELKIN_SA_FLOW_IRTS);
else
urb_value &= ~(BELKIN_SA_FLOW_OCTS | BELKIN_SA_FLOW_IRTS);
if (priv->bad_flow_control)
urb_value &= ~(BELKIN_SA_FLOW_IRTS);
if (BSA_USB_CMD(BELKIN_SA_SET_FLOW_CTRL_REQUEST, urb_value) < 0)
err("Set flow control error");
}
} /* belkin_sa_set_termios */
static void belkin_sa_break_ctl( struct usb_serial_port *port, int break_state )
{
struct usb_serial *serial = port->serial;
if (BSA_USB_CMD(BELKIN_SA_SET_BREAK_REQUEST, break_state ? 1 : 0) < 0)
err("Set break_ctl %d", break_state);
}
static int belkin_sa_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg)
{
struct usb_serial *serial = port->serial;
__u16 urb_value; /* Will hold the new flags */
struct belkin_sa_private *priv = (struct belkin_sa_private *)port->private;
int ret, mask;
/* Based on code from acm.c and others */
switch (cmd) {
case TIOCMGET:
return put_user(priv->control_state, (unsigned long *) arg);
break;
case TIOCMSET: /* Turns on and off the lines as specified by the mask */
case TIOCMBIS: /* turns on (Sets) the lines as specified by the mask */
case TIOCMBIC: /* turns off (Clears) the lines as specified by the mask */
if (get_user(mask, (unsigned long *) arg))
return -EFAULT;
if ((cmd == TIOCMSET) || (mask & TIOCM_RTS)) {
/* RTS needs set */
urb_value = ((cmd == TIOCMSET) && (mask & TIOCM_RTS)) || (cmd == TIOCMBIS) ? 1 : 0;
if (urb_value)
priv->control_state |= TIOCM_RTS;
else
priv->control_state &= ~TIOCM_RTS;
if ((ret = BSA_USB_CMD(BELKIN_SA_SET_RTS_REQUEST, urb_value)) < 0) {
err("Set RTS error %d", ret);
return(ret);
}
}
if ((cmd == TIOCMSET) || (mask & TIOCM_DTR)) {
/* DTR needs set */
urb_value = ((cmd == TIOCMSET) && (mask & TIOCM_DTR)) || (cmd == TIOCMBIS) ? 1 : 0;
if (urb_value)
priv->control_state |= TIOCM_DTR;
else
priv->control_state &= ~TIOCM_DTR;
if ((ret = BSA_USB_CMD(BELKIN_SA_SET_DTR_REQUEST, urb_value)) < 0) {
err("Set DTR error %d", ret);
return(ret);
}
}
break;
case TIOCMIWAIT:
/* wait for any of the 4 modem inputs (DCD,RI,DSR,CTS)*/
/* TODO */
return( 0 );
case TIOCGICOUNT:
/* return count of modemline transitions */
/* TODO */
return 0;
default:
dbg("belkin_sa_ioctl arg not supported - 0x%04x",cmd);
return(-ENOIOCTLCMD);
break;
}
return 0;
} /* belkin_sa_ioctl */
static int __init belkin_sa_init (void)
{
usb_serial_register (&belkin_dockstation_device);
usb_serial_register (&belkin_sa_device);
usb_serial_register (&belkin_old_device);
usb_serial_register (&peracom_device);
usb_serial_register (&gocom232_device);
info(DRIVER_DESC " " DRIVER_VERSION);
return 0;
}
static void __exit belkin_sa_exit (void)
{
usb_serial_deregister (&belkin_dockstation_device);
usb_serial_deregister (&belkin_sa_device);
usb_serial_deregister (&belkin_old_device);
usb_serial_deregister (&peracom_device);
usb_serial_deregister (&gocom232_device);
}
module_init (belkin_sa_init);
module_exit (belkin_sa_exit);
MODULE_AUTHOR( DRIVER_AUTHOR );
MODULE_DESCRIPTION( DRIVER_DESC );
MODULE_LICENSE("GPL");
MODULE_PARM(debug, "i");
MODULE_PARM_DESC(debug, "Debug enabled or not");
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