/*****************************************************************************/
/*
* devio.c -- User space communication with USB devices.
*
* Copyright (C) 1999-2000 Thomas Sailer (sailer@ife.ee.ethz.ch)
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id: devio.c,v 1.7 2000/02/01 17:28:48 fliegl Exp $
*
* This file implements the usbfs/x/y files, where
* x is the bus number and y the device number.
*
* It allows user space programs/"drivers" to communicate directly
* with USB devices without intervening kernel driver.
*
* Revision history
* 22.12.1999 0.1 Initial release (split from proc_usb.c)
* 04.01.2000 0.2 Turned into its own filesystem
*/
/*****************************************************************************/
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/smp_lock.h>
#include <linux/signal.h>
#include <linux/poll.h>
#include <linux/module.h>
#include <linux/usb.h>
#include <linux/usbdevice_fs.h>
#include <asm/uaccess.h>
#include <asm/byteorder.h>
#include <linux/moduleparam.h>
#include "hcd.h" /* for usbcore internals */
#include "usb.h"
struct async {
struct list_head asynclist;
struct dev_state *ps;
struct task_struct *task;
unsigned int signr;
unsigned int ifnum;
void __user *userbuffer;
void __user *userurb;
struct urb *urb;
};
static int </