[media] staging: lirc_sasem: remove

This driver was merged in 2010 and never had the necessary work done
to promote it out of staging (port to rc-core), so remove it.

I have not managed to track down the hardware. If anyone has the
hardware and would like a driver for it, please contact me and
hopefully we can work together to write a new driver.

Signed-off-by: Sean Young <sean@mess.org>
Cc: Oliver Stabel <oliver.stabel@gmx.de>
Cc: Tim Davies <tim@opensystems.net.au>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/staging/media/lirc/Kconfig

@@ -12,12 +12,6 @@ menuconfig LIRC_STAGING
 
 if LIRC_STAGING
 
-config LIRC_SASEM
-	tristate "Sasem USB IR Remote"
-	depends on LIRC && USB
-	help
-	  Driver for the Sasem OnAir Remocon-V or Dign HV5 HTPC IR/VFD Module
-
 config LIRC_ZILOG
 	tristate "Zilog/Hauppauge IR Transmitter"
 	depends on LIRC && I2C

drivers/staging/media/lirc/Makefile

@@ -3,5 +3,4 @@
 
 # Each configuration option enables a list of files.
 
-obj-$(CONFIG_LIRC_SASEM)	+= lirc_sasem.o
 obj-$(CONFIG_LIRC_ZILOG)	+= lirc_zilog.o

drivers/staging/media/lirc/lirc_sasem.c

@@ -1,899 +0,0 @@
-/*
- * lirc_sasem.c - USB remote support for LIRC
- * Version 0.5
- *
- * Copyright (C) 2004-2005 Oliver Stabel <oliver.stabel@gmx.de>
- *			 Tim Davies <tim@opensystems.net.au>
- *
- * This driver was derived from:
- *   Venky Raju <dev@venky.ws>
- *      "lirc_imon - "LIRC/VFD driver for Ahanix/Soundgraph IMON IR/VFD"
- *   Paul Miller <pmiller9@users.sourceforge.net>'s 2003-2004
- *      "lirc_atiusb - USB remote support for LIRC"
- *   Culver Consulting Services <henry@culcon.com>'s 2003
- *      "Sasem OnAir VFD/IR USB driver"
- *
- *
- * NOTE - The LCDproc iMon driver should work with this module.  More info at
- *	http://www.frogstorm.info/sasem
- */
-
-/*
- *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/uaccess.h>
-#include <linux/usb.h>
-#include <linux/ktime.h>
-
-#include <media/lirc.h>
-#include <media/lirc_dev.h>
-
-#define MOD_AUTHOR	"Oliver Stabel <oliver.stabel@gmx.de>, " \
-			"Tim Davies <tim@opensystems.net.au>"
-#define MOD_DESC	"USB Driver for Sasem Remote Controller V1.1"
-#define MOD_NAME	"lirc_sasem"
-#define MOD_VERSION	"0.5"
-
-#define VFD_MINOR_BASE	144	/* Same as LCD */
-#define DEVICE_NAME	"lcd%d"
-
-#define BUF_CHUNK_SIZE	8
-#define BUF_SIZE	128
-
-#define IOCTL_LCD_CONTRAST 1
-
-/*** P R O T O T Y P E S ***/
-
-/* USB Callback prototypes */
-static int sasem_probe(struct usb_interface *interface,
-			const struct usb_device_id *id);
-static void sasem_disconnect(struct usb_interface *interface);
-static void usb_rx_callback(struct urb *urb);
-static void usb_tx_callback(struct urb *urb);
-
-/* VFD file_operations function prototypes */
-static int vfd_open(struct inode *inode, struct file *file);
-static long vfd_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
-static int vfd_close(struct inode *inode, struct file *file);
-static ssize_t vfd_write(struct file *file, const char __user *buf,
-				size_t n_bytes, loff_t *pos);
-
-/* LIRC driver function prototypes */
-static int ir_open(void *data);
-static void ir_close(void *data);
-
-/*** G L O B A L S ***/
-#define SASEM_DATA_BUF_SZ	32
-
-struct sasem_context {
-	struct usb_device *dev;
-	int vfd_isopen;			/* VFD port has been opened */
-	unsigned int vfd_contrast;	/* VFD contrast */
-	int ir_isopen;			/* IR port has been opened */
-	int dev_present;		/* USB device presence */
-	struct mutex ctx_lock;		/* to lock this object */
-	wait_queue_head_t remove_ok;	/* For unexpected USB disconnects */
-
-	struct lirc_driver *driver;
-	struct usb_endpoint_descriptor *rx_endpoint;
-	struct usb_endpoint_descriptor *tx_endpoint;
-	struct urb *rx_urb;
-	struct urb *tx_urb;
-	unsigned char usb_rx_buf[8];
-	unsigned char usb_tx_buf[8];
-
-	struct tx_t {
-		unsigned char data_buf[SASEM_DATA_BUF_SZ]; /* user data
-							    * buffer
-							    */
-		struct completion finished;  /* wait for write to finish  */
-		atomic_t busy;		     /* write in progress */
-		int status;		     /* status of tx completion */
-	} tx;
-
-	/* for dealing with repeat codes (wish there was a toggle bit!) */
-	ktime_t presstime;
-	char lastcode[8];
-	int codesaved;
-};
-
-/* VFD file operations */
-static const struct file_operations vfd_fops = {
-	.owner		= THIS_MODULE,
-	.open		= &vfd_open,
-	.write		= vfd_write,
-	.unlocked_ioctl	= &vfd_ioctl,
-	.release	= &vfd_close,
-	.llseek		= noop_llseek,
-};
-
-/* USB Device ID for Sasem USB Control Board */
-static struct usb_device_id sasem_usb_id_table[] = {
-	/* Sasem USB Control Board */
-	{ USB_DEVICE(0x11ba, 0x0101) },
-	/* Terminating entry */
-	{}
-};
-
-/* USB Device data */
-static struct usb_driver sasem_driver = {
-	.name		= MOD_NAME,
-	.probe		= sasem_probe,
-	.disconnect	= sasem_disconnect,
-	.id_table	= sasem_usb_id_table,
-};
-
-static struct usb_class_driver sasem_class = {
-	.name		= DEVICE_NAME,
-	.fops		= &vfd_fops,
-	.minor_base	= VFD_MINOR_BASE,
-};
-
-/* to prevent races between open() and disconnect() */
-static DEFINE_MUTEX(disconnect_lock);
-
-static int debug;
-
-
-/*** M O D U L E   C O D E ***/
-MODULE_AUTHOR(MOD_AUTHOR);
-MODULE_DESCRIPTION(MOD_DESC);
-MODULE_LICENSE("GPL");
-module_param(debug, int, 0644);
-MODULE_PARM_DESC(debug, "Debug messages: 0=no, 1=yes (default: no)");
-
-static void delete_context(struct sasem_context *context)
-{
-	usb_free_urb(context->tx_urb);  /* VFD */
-	usb_free_urb(context->rx_urb);  /* IR */
-	lirc_buffer_free(context->driver->rbuf);
-	kfree(context->driver->rbuf);
-	kfree(context->driver);
-	kfree(context);
-}
-
-static void deregister_from_lirc(struct sasem_context *context)
-{
-	int retval;
-	int minor = context->driver->minor;
-
-	retval = lirc_unregister_driver(minor);
-	if (retval)
-		dev_err(&context->dev->dev,
-			"%s: unable to deregister from lirc (%d)\n",
-			__func__, retval);
-	else
-		dev_info(&context->dev->dev,
-			 "Deregistered Sasem driver (minor:%d)\n", minor);
-}
-
-/**
- * Called when the VFD device (e.g. /dev/usb/lcd)
- * is opened by the application.
- */
-static int vfd_open(struct inode *inode, struct file *file)
-{
-	struct usb_interface *interface;
-	struct sasem_context *context = NULL;
-	int subminor;
-	int retval = 0;
-
-	/* prevent races with disconnect */
-	mutex_lock(&disconnect_lock);
-
-	subminor = iminor(inode);
-	interface = usb_find_interface(&sasem_driver, subminor);
-	if (!interface) {
-		pr_err("%s: could not find interface for minor %d\n",
-		       __func__, subminor);
-		retval = -ENODEV;
-		goto exit;
-	}
-	context = usb_get_intfdata(interface);
-
-	if (!context) {
-		dev_err(&interface->dev, "no context found for minor %d\n",
-			subminor);
-		retval = -ENODEV;
-		goto exit;
-	}
-
-	mutex_lock(&context->ctx_lock);
-
-	if (context->vfd_isopen) {
-		dev_err(&interface->dev,
-			"%s: VFD port is already open", __func__);
-		retval = -EBUSY;
-	} else {
-		context->vfd_isopen = 1;
-		file->private_data = context;
-		dev_info(&interface->dev, "VFD port opened\n");
-	}
-
-	mutex_unlock(&context->ctx_lock);
-
-exit:
-	mutex_unlock(&disconnect_lock);
-	return retval;
-}
-
-/**
- * Called when the VFD device (e.g. /dev/usb/lcd)
- * is closed by the application.
- */
-static long vfd_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
-	struct sasem_context *context;
-
-	context = (struct sasem_context *) file->private_data;
-
-	if (!context) {
-		pr_err("%s: no context for device\n", __func__);
-		return -ENODEV;
-	}
-
-	mutex_lock(&context->ctx_lock);
-
-	switch (cmd) {
-	case IOCTL_LCD_CONTRAST:
-		if (arg > 1000)
-			arg = 1000;
-		context->vfd_contrast = (unsigned int)arg;
-		break;
-	default:
-		pr_info("Unknown IOCTL command\n");
-		mutex_unlock(&context->ctx_lock);
-		return -ENOIOCTLCMD;  /* not supported */
-	}
-
-	mutex_unlock(&context->ctx_lock);
-	return 0;
-}
-
-/**
- * Called when the VFD device (e.g. /dev/usb/lcd)
- * is closed by the application.
- */
-static int vfd_close(struct inode *inode, struct file *file)
-{
-	struct sasem_context *context = NULL;
-	int retval = 0;
-
-	context = (struct sasem_context *) file->private_data;
-
-	if (!context) {
-		pr_err("%s: no context for device\n", __func__);
-		return -ENODEV;
-	}
-
-	mutex_lock(&context->ctx_lock);
-
-	if (!context->vfd_isopen) {
-		dev_err(&context->dev->dev, "%s: VFD is not open\n", __func__);
-		retval = -EIO;
-	} else {
-		context->vfd_isopen = 0;
-		dev_info(&context->dev->dev, "VFD port closed\n");
-		if (!context->dev_present && !context->ir_isopen) {
-			/* Device disconnected before close and IR port is
-			 * not open. If IR port is open, context will be
-			 * deleted by ir_close.
-			 */
-			mutex_unlock(&context->ctx_lock);
-			delete_context(context);
-			return retval;
-		}
-	}
-
-	mutex_unlock(&context->ctx_lock);
-	return retval;
-}
-
-/**
- * Sends a packet to the VFD.
- */
-static int send_packet(struct sasem_context *context)
-{
-	unsigned int pipe;
-	int interval = 0;
-	int retval = 0;
-
-	pipe = usb_sndintpipe(context->dev,
-			context->tx_endpoint->bEndpointAddress);
-	interval = context->tx_endpoint->bInterval;
-
-	usb_fill_int_urb(context->tx_urb, context->dev, pipe,
-		context->usb_tx_buf, sizeof(context->usb_tx_buf),
-		usb_tx_callback, context, interval);
-
-	context->tx_urb->actual_length = 0;
-
-	init_completion(&context->tx.finished);
-	atomic_set(&context->tx.busy, 1);
-
-	retval =  usb_submit_urb(context->tx_urb, GFP_KERNEL);
-	if (retval) {
-		atomic_set(&context->tx.busy, 0);
-		dev_err(&context->dev->dev, "error submitting urb (%d)\n",
-			retval);
-	} else {
-		/* Wait for transmission to complete (or abort) */
-		mutex_unlock(&context->ctx_lock);
-		wait_for_completion(&context->tx.finished);
-		mutex_lock(&context->ctx_lock);
-
-		retval = context->tx.status;
-		if (retval)
-			dev_err(&context->dev->dev,
-				"packet tx failed (%d)\n", retval);
-	}
-
-	return retval;
-}
-
-/**
- * Writes data to the VFD.  The Sasem VFD is 2x16 characters
- * and requires data in 9 consecutive USB interrupt packets,
- * each packet carrying 8 bytes.
- */
-static ssize_t vfd_write(struct file *file, const char __user *buf,
-				size_t n_bytes, loff_t *pos)
-{
-	int i;
-	int retval = 0;
-	struct sasem_context *context;
-	int *data_buf = NULL;
-
-	context = (struct sasem_context *) file->private_data;
-	if (!context) {
-		pr_err("%s: no context for device\n", __func__);
-		return -ENODEV;
-	}
-
-	mutex_lock(&context->ctx_lock);
-
-	if (!context->dev_present) {
-		pr_err("%s: no Sasem device present\n", __func__);
-		retval = -ENODEV;
-		goto exit;
-	}
-
-	if (n_bytes <= 0 || n_bytes > SASEM_DATA_BUF_SZ) {
-		dev_err(&context->dev->dev, "%s: invalid payload size\n",
-			__func__);
-		retval = -EINVAL;
-		goto exit;
-	}
-
-	data_buf = memdup_user(buf, n_bytes);
-	if (IS_ERR(data_buf)) {
-		mutex_unlock(&context->ctx_lock);
-		return PTR_ERR(data_buf);
-	}
-
-	memcpy(context->tx.data_buf, data_buf, n_bytes);
-
-	/* Pad with spaces */
-	for (i = n_bytes; i < SASEM_DATA_BUF_SZ; ++i)
-		context->tx.data_buf[i] = ' ';
-
-	/* Nine 8 byte packets to be sent */
-	/* NOTE: "\x07\x01\0\0\0\0\0\0" or "\x0c\0\0\0\0\0\0\0"
-	 *       will clear the VFD
-	 */
-	for (i = 0; i < 9; i++) {
-		switch (i) {
-		case 0:
-			memcpy(context->usb_tx_buf, "\x07\0\0\0\0\0\0\0", 8);
-			context->usb_tx_buf[1] = (context->vfd_contrast) ?
-				(0x2B - (context->vfd_contrast - 1) / 250)
-				: 0x2B;
-			break;
-		case 1:
-			memcpy(context->usb_tx_buf, "\x09\x01\0\0\0\0\0\0", 8);
-			break;
-		case 2:
-			memcpy(context->usb_tx_buf, "\x0b\x01\0\0\0\0\0\0", 8);
-			break;
-		case 3:
-			memcpy(context->usb_tx_buf, context->tx.data_buf, 8);
-			break;
-		case 4:
-			memcpy(context->usb_tx_buf,
-			       context->tx.data_buf + 8, 8);
-			break;
-		case 5:
-			memcpy(context->usb_tx_buf, "\x09\x01\0\0\0\0\0\0", 8);
-			break;
-		case 6:
-			memcpy(context->usb_tx_buf, "\x0b\x02\0\0\0\0\0\0", 8);
-			break;
-		case 7:
-			memcpy(context->usb_tx_buf,
-			       context->tx.data_buf + 16, 8);
-			break;
-		case 8:
-			memcpy(context->usb_tx_buf,
-			       context->tx.data_buf + 24, 8);
-			break;
-		}
-		retval = send_packet(context);
-		if (retval) {
-			dev_err(&context->dev->dev,
-				"send packet failed for packet #%d\n", i);
-			goto exit;
-		}
-	}
-exit:
-
-	mutex_unlock(&context->ctx_lock);
-	kfree(data_buf);
-
-	return (!retval) ? n_bytes : retval;
-}
-
-/**
- * Callback function for USB core API: transmit data
- */
-static void usb_tx_callback(struct urb *urb)
-{
-	struct sasem_context *context;
-
-	if (!urb)
-		return;
-	context = (struct sasem_context *) urb->context;
-	if (!context)
-		return;
-
-	context->tx.status = urb->status;
-
-	/* notify waiters that write has finished */
-	atomic_set(&context->tx.busy, 0);
-	complete(&context->tx.finished);
-}
-
-/**
- * Called by lirc_dev when the application opens /dev/lirc
- */
-static int ir_open(void *data)
-{
-	int retval = 0;
-	struct sasem_context *context;
-
-	/* prevent races with disconnect */
-	mutex_lock(&disconnect_lock);
-
-	context = data;
-
-	mutex_lock(&context->ctx_lock);
-
-	if (context->ir_isopen) {
-		dev_err(&context->dev->dev, "%s: IR port is already open\n",
-			__func__);
-		retval = -EBUSY;
-		goto exit;
-	}
-
-	usb_fill_int_urb(context->rx_urb, context->dev,
-		usb_rcvintpipe(context->dev,
-				context->rx_endpoint->bEndpointAddress),
-		context->usb_rx_buf, sizeof(context->usb_rx_buf),
-		usb_rx_callback, context, context->rx_endpoint->bInterval);
-
-	retval = usb_submit_urb(context->rx_urb, GFP_KERNEL);
-
-	if (retval)
-		dev_err(&context->dev->dev,
-			"usb_submit_urb failed for ir_open (%d)\n", retval);
-	else {
-		context->ir_isopen = 1;
-		dev_info(&context->dev->dev, "IR port opened\n");
-	}
-
-exit:
-	mutex_unlock(&context->ctx_lock);
-
-	mutex_unlock(&disconnect_lock);
-	return retval;
-}
-
-/**
- * Called by lirc_dev when the application closes /dev/lirc
- */
-static void ir_close(void *data)
-{
-	struct sasem_context *context;
-
-	context = data;
-	if (!context) {
-		pr_err("%s: no context for device\n", __func__);
-		return;
-	}
-
-	mutex_lock(&context->ctx_lock);
-
-	usb_kill_urb(context->rx_urb);
-	context->ir_isopen = 0;
-	pr_info("IR port closed\n");
-
-	if (!context->dev_present) {
-
-		/*
-		 * Device disconnected while IR port was
-		 * still open. Driver was not deregistered
-		 * at disconnect time, so do it now.
-		 */
-		deregister_from_lirc(context);
-		if (!context->vfd_isopen) {
-			mutex_unlock(&context->ctx_lock);
-			delete_context(context);
-			return;
-		}
-		/* If VFD port is open, context will be deleted by vfd_close */
-	}
-
-	mutex_unlock(&context->ctx_lock);
-}
-
-/**
- * Process the incoming packet
- */
-static void incoming_packet(struct sasem_context *context,
-				   struct urb *urb)
-{
-	int len = urb->actual_length;
-	unsigned char *buf = urb->transfer_buffer;
-	u64 ns;
-	ktime_t kt;
-
-	if (len != 8) {
-		dev_warn(&context->dev->dev,
-			 "%s: invalid incoming packet size (%d)\n",
-			 __func__, len);
-		return;
-	}
-
-	if (debug)
-		dev_info(&context->dev->dev, "Incoming data: %*ph\n", len, buf);
-	/*
-	 * Lirc could deal with the repeat code, but we really need to block it
-	 * if it arrives too late.  Otherwise we could repeat the wrong code.
-	 */
-
-	/* get the time since the last button press */
-	kt = ktime_get();
-	ns = ktime_to_ns(ktime_sub(kt, context->presstime));
-
-	if (memcmp(buf, "\x08\0\0\0\0\0\0\0", 8) == 0) {
-		/*
-		 * the repeat code is being sent, so we copy
-		 * the old code to LIRC
-		 */
-
-		/*
-		 * NOTE: Only if the last code was less than 250ms ago
-		 * - no one should be able to push another (undetected) button
-		 *   in that time and then get a false repeat of the previous
-		 *   press but it is long enough for a genuine repeat
-		 */
-		if ((ns < 250 * NSEC_PER_MSEC) && (context->codesaved != 0)) {
-			memcpy(buf, &context->lastcode, 8);
-			context->presstime = kt;
-		}
-	} else {
-		/* save the current valid code for repeats */
-		memcpy(&context->lastcode, buf, 8);
-		/*
-		 * set flag to signal a valid code was save;
-		 * just for safety reasons
-		 */
-		context->codesaved = 1;
-		context->presstime = kt;
-	}
-
-	lirc_buffer_write(context->driver->rbuf, buf);
-	wake_up(&context->driver->rbuf->wait_poll);
-}
-
-/**
- * Callback function for USB core API: receive data
- */
-static void usb_rx_callback(struct urb *urb)
-{
-	struct sasem_context *context;
-
-	if (!urb)
-		return;
-	context = (struct sasem_context *) urb->context;
-	if (!context)
-		return;
-
-	switch (urb->status) {
-	case -ENOENT:		/* usbcore unlink successful! */
-		return;
-
-	case 0:
-		if (context->ir_isopen)
-			incoming_packet(context, urb);
-		break;
-
-	default:
-		dev_warn(&urb->dev->dev, "%s: status (%d): ignored",
-			 __func__, urb->status);
-		break;
-	}
-
-	usb_submit_urb(context->rx_urb, GFP_ATOMIC);
-}
-
-/**
- * Callback function for USB core API: Probe
- */
-static int sasem_probe(struct usb_interface *interface,
-			const struct usb_device_id *id)
-{
-	struct usb_device *dev = NULL;
-	struct usb_host_interface *iface_desc = NULL;
-	struct usb_endpoint_descriptor *rx_endpoint = NULL;
-	struct usb_endpoint_descriptor *tx_endpoint = NULL;
-	struct urb *rx_urb = NULL;
-	struct urb *tx_urb = NULL;
-	struct lirc_driver *driver = NULL;
-	struct lirc_buffer *rbuf = NULL;
-	int lirc_minor = 0;
-	int num_endpoints;
-	int retval = 0;
-	int vfd_ep_found;
-	int ir_ep_found;
-	int alloc_status;
-	struct sasem_context *context = NULL;
-	int i;
-
-	dev_info(&interface->dev, "%s: found Sasem device\n", __func__);
-
-
-	dev = usb_get_dev(interface_to_usbdev(interface));
-	iface_desc = interface->cur_altsetting;
-	num_endpoints = iface_desc->desc.bNumEndpoints;
-
-	/*
-	 * Scan the endpoint list and set:
-	 *	first input endpoint = IR endpoint
-	 *	first output endpoint = VFD endpoint
-	 */
-
-	ir_ep_found = 0;
-	vfd_ep_found = 0;
-
-	for (i = 0; i < num_endpoints && !(ir_ep_found && vfd_ep_found); ++i) {
-
-		struct usb_endpoint_descriptor *ep;
-
-		ep = &iface_desc->endpoint [i].desc;
-
-		if (!ir_ep_found &&
-			usb_endpoint_is_int_in(ep)) {
-
-			rx_endpoint = ep;
-			ir_ep_found = 1;
-			if (debug)
-				dev_info(&interface->dev,
-					"%s: found IR endpoint\n", __func__);
-
-		} else if (!vfd_ep_found &&
-			usb_endpoint_is_int_out(ep)) {
-			tx_endpoint = ep;
-			vfd_ep_found = 1;
-			if (debug)
-				dev_info(&interface->dev,
-					"%s: found VFD endpoint\n", __func__);
-		}
-	}
-
-	/* Input endpoint is mandatory */
-	if (!ir_ep_found) {
-		dev_err(&interface->dev,
-			"%s: no valid input (IR) endpoint found.\n", __func__);
-		retval = -ENODEV;
-		goto exit;
-	}
-
-	if (!vfd_ep_found)
-		dev_info(&interface->dev,
-			"%s: no valid output (VFD) endpoint found.\n",
-			__func__);
-
-
-	/* Allocate memory */
-	alloc_status = 0;
-
-	context = kzalloc(sizeof(*context), GFP_KERNEL);
-	if (!context) {
-		alloc_status = 1;
-		goto alloc_status_switch;
-	}
-	driver = kzalloc(sizeof(*driver), GFP_KERNEL);
-	if (!driver) {
-		alloc_status = 2;
-		goto alloc_status_switch;
-	}
-	rbuf = kmalloc(sizeof(*rbuf), GFP_KERNEL);
-	if (!rbuf) {
-		alloc_status = 3;
-		goto alloc_status_switch;
-	}
-	if (lirc_buffer_init(rbuf, BUF_CHUNK_SIZE, BUF_SIZE)) {
-		dev_err(&interface->dev,
-			"%s: lirc_buffer_init failed\n", __func__);
-		alloc_status = 4;
-		goto alloc_status_switch;
-	}
-	rx_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!rx_urb) {
-		alloc_status = 5;
-		goto alloc_status_switch;
-	}
-	if (vfd_ep_found) {
-		tx_urb = usb_alloc_urb(0, GFP_KERNEL);
-		if (!tx_urb) {
-			alloc_status = 6;
-			goto alloc_status_switch;
-		}
-	}
-
-	mutex_init(&context->ctx_lock);
-
-	strcpy(driver->name, MOD_NAME);
-	driver->minor = -1;
-	driver->code_length = 64;
-	driver->sample_rate = 0;
-	driver->features = LIRC_CAN_REC_LIRCCODE;
-	driver->data = context;
-	driver->rbuf = rbuf;
-	driver->set_use_inc = ir_open;
-	driver->set_use_dec = ir_close;
-	driver->dev   = &interface->dev;
-	driver->owner = THIS_MODULE;
-
-	mutex_lock(&context->ctx_lock);
-
-	lirc_minor = lirc_register_driver(driver);
-	if (lirc_minor < 0) {
-		dev_err(&interface->dev,
-			"%s: lirc_register_driver failed\n", __func__);
-		alloc_status = 7;
-		retval = lirc_minor;
-		goto unlock;
-	} else
-		dev_info(&interface->dev,
-			 "%s: Registered Sasem driver (minor:%d)\n",
-			 __func__, lirc_minor);
-
-	/* Needed while unregistering! */
-	driver->minor = lirc_minor;
-
-	context->dev = dev;
-	context->dev_present = 1;
-	context->rx_endpoint = rx_endpoint;
-	context->rx_urb = rx_urb;
-	if (vfd_ep_found) {
-		context->tx_endpoint = tx_endpoint;
-		context->tx_urb = tx_urb;
-		context->vfd_contrast = 1000;   /* range 0 - 1000 */
-	}
-	context->driver = driver;
-
-	usb_set_intfdata(interface, context);
-
-	if (vfd_ep_found) {
-
-		if (debug)
-			dev_info(&interface->dev,
-				 "Registering VFD with sysfs\n");
-		if (usb_register_dev(interface, &sasem_class))
-			/* Not a fatal error, so ignore */
-			dev_info(&interface->dev,
-				 "%s: could not get a minor number for VFD\n",
-				 __func__);
-	}
-
-	dev_info(&interface->dev,
-		 "%s: Sasem device on usb<%d:%d> initialized\n",
-		 __func__, dev->bus->busnum, dev->devnum);
-unlock:
-	mutex_unlock(&context->ctx_lock);
-
-alloc_status_switch:
-	switch (alloc_status) {
-
-	case 7:
-		if (vfd_ep_found)
-			usb_free_urb(tx_urb);
-	case 6:
-		usb_free_urb(rx_urb);
-		/* fall-through */
-	case 5:
-		lirc_buffer_free(rbuf);
-		/* fall-through */
-	case 4:
-		kfree(rbuf);
-		/* fall-through */
-	case 3:
-		kfree(driver);
-		/* fall-through */
-	case 2:
-		kfree(context);
-		context = NULL;
-		/* fall-through */
-	case 1:
-		if (retval == 0)
-			retval = -ENOMEM;
-	}
-
-exit:
-	return retval;
-}
-
-/**
- * Callback function for USB core API: disconnect
- */
-static void sasem_disconnect(struct usb_interface *interface)
-{
-	struct sasem_context *context;
-
-	/* prevent races with ir_open()/vfd_open() */
-	mutex_lock(&disconnect_lock);
-
-	context = usb_get_intfdata(interface);
-	mutex_lock(&context->ctx_lock);
-
-	dev_info(&interface->dev, "%s: Sasem device disconnected\n",
-		 __func__);
-
-	usb_set_intfdata(interface, NULL);
-	context->dev_present = 0;
-
-	/* Stop reception */
-	usb_kill_urb(context->rx_urb);
-
-	/* Abort ongoing write */
-	if (atomic_read(&context->tx.busy)) {
-
-		usb_kill_urb(context->tx_urb);
-		wait_for_completion(&context->tx.finished);
-	}
-
-	/* De-register from lirc_dev if IR port is not open */
-	if (!context->ir_isopen)
-		deregister_from_lirc(context);
-
-	usb_deregister_dev(interface, &sasem_class);
-
-	mutex_unlock(&context->ctx_lock);
-
-	if (!context->ir_isopen && !context->vfd_isopen)
-		delete_context(context);
-
-	mutex_unlock(&disconnect_lock);
-}
-
-module_usb_driver(sasem_driver);