irda: move drivers/net/irda to drivers/staging/irda/drivers

Move the irda drivers from drivers/net/irda/ to
drivers/staging/irda/drivers as they will be deleted in a future kernel
release.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 987 deletions

diff --git a/drivers/net/irda/mcs7780.c b/drivers/net/irda/mcs7780.c
deleted file mode 100644
index c3f0b254b344..000000000000
--- a/drivers/net/irda/mcs7780.c
+++ /dev/null
@@ -1,987 +0,0 @@
-/*****************************************************************************
-*
-* Filename:      mcs7780.c
-* Version:       0.4-alpha
-* Description:   Irda MosChip USB Dongle Driver
-* Authors:       Lukasz Stelmach <stlman@poczta.fm>
-* 		 Brian Pugh <bpugh@cs.pdx.edu>
-*		 Judy Fischbach <jfisch@cs.pdx.edu>
-*
-*       Based on stir4200 driver, but some things done differently.
-*       Based on earlier driver by Paul Stewart <stewart@parc.com>
-*
-*       Copyright (C) 2000, Roman Weissgaerber <weissg@vienna.at>
-*       Copyright (C) 2001, Dag Brattli <dag@brattli.net>
-*       Copyright (C) 2001, Jean Tourrilhes <jt@hpl.hp.com>
-*       Copyright (C) 2004, Stephen Hemminger <shemminger@osdl.org>
-*       Copyright (C) 2005, Lukasz Stelmach <stlman@poczta.fm>
-*       Copyright (C) 2005, Brian Pugh <bpugh@cs.pdx.edu>
-*       Copyright (C) 2005, Judy Fischbach <jfisch@cs.pdx.edu>
-*
-*       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.
-*
-*****************************************************************************/
-
-/*
- * MCS7780 is a simple USB to IrDA bridge by MosChip. It is neither
- * compatibile with irda-usb nor with stir4200. Although it is quite
- * similar to the later as far as general idea of operation is concerned.
- * That is it requires the software to do all the framing job at SIR speeds.
- * The hardware does take care of the framing at MIR and FIR speeds.
- * It supports all speeds from 2400 through 4Mbps
- */
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/slab.h>
-#include <linux/usb.h>
-#include <linux/device.h>
-#include <linux/crc32.h>
-
-#include <asm/unaligned.h>
-#include <asm/byteorder.h>
-#include <linux/uaccess.h>
-
-#include <net/irda/irda.h>
-#include <net/irda/wrapper.h>
-#include <net/irda/crc.h>
-
-#include "mcs7780.h"
-
-#define MCS_VENDOR_ID 0x9710
-#define MCS_PRODUCT_ID 0x7780
-
-static const struct usb_device_id mcs_table[] = {
-	/* MosChip Corp.,  MCS7780 FIR-USB Adapter */
-	{USB_DEVICE(MCS_VENDOR_ID, MCS_PRODUCT_ID)},
-	{},
-};
-
-MODULE_AUTHOR("Brian Pugh <bpugh@cs.pdx.edu>");
-MODULE_DESCRIPTION("IrDA-USB Dongle Driver for MosChip MCS7780");
-MODULE_VERSION("0.3alpha");
-MODULE_LICENSE("GPL");
-
-MODULE_DEVICE_TABLE(usb, mcs_table);
-
-static int qos_mtt_bits = 0x07 /* > 1ms */ ;
-module_param(qos_mtt_bits, int, 0);
-MODULE_PARM_DESC(qos_mtt_bits, "Minimum Turn Time");
-
-static int receive_mode = 0x1;
-module_param(receive_mode, int, 0);
-MODULE_PARM_DESC(receive_mode,
-		 "Receive mode of the device (1:fast, 0:slow, default:1)");
-
-static int sir_tweak = 1;
-module_param(sir_tweak, int, 0444);
-MODULE_PARM_DESC(sir_tweak,
-		 "Default pulse width (1:1.6us, 0:3/16 bit, default:1).");
-
-static int transceiver_type = MCS_TSC_VISHAY;
-module_param(transceiver_type, int, 0444);
-MODULE_PARM_DESC(transceiver_type, "IR transceiver type, see mcs7780.h.");
-
-static struct usb_driver mcs_driver = {
-	.name = "mcs7780",
-	.probe = mcs_probe,
-	.disconnect = mcs_disconnect,
-	.id_table = mcs_table,
-};
-
-/* speed flag selection by direct addressing.
-addr = (speed >> 8) & 0x0f
-
-0x1   57600	 0x2  115200	 0x4 1152000	 0x5    9600
-0x6   38400	 0x9    2400	 0xa  576000	 0xb   19200
-
-4Mbps (or 2400) must be checked separately. Since it also has
-to be programmed in a different manner that is not a big problem.
-*/
-static __u16 mcs_speed_set[16] = { 0,
-	MCS_SPEED_57600,
-	MCS_SPEED_115200,
-	0,
-	MCS_SPEED_1152000,
-	MCS_SPEED_9600,
-	MCS_SPEED_38400,
-	0, 0,
-	MCS_SPEED_2400,
-	MCS_SPEED_576000,
-	MCS_SPEED_19200,
-	0, 0, 0,
-};
-
-/* Set given 16 bit register with a 16 bit value. Send control message
- * to set dongle register. */
-static int mcs_set_reg(struct mcs_cb *mcs, __u16 reg, __u16 val)
-{
-	struct usb_device *dev = mcs->usbdev;
-	return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ,
-			       MCS_WR_RTYPE, val, reg, NULL, 0,
-			       msecs_to_jiffies(MCS_CTRL_TIMEOUT));
-}
-
-/* Get 16 bit register value. Send contol message to read dongle register. */
-static int mcs_get_reg(struct mcs_cb *mcs, __u16 reg, __u16 * val)
-{
-	struct usb_device *dev = mcs->usbdev;
-	void *dmabuf;
-	int ret;
-
-	dmabuf = kmalloc(sizeof(__u16), GFP_KERNEL);
-	if (!dmabuf)
-		return -ENOMEM;
-
-	ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ,
-			      MCS_RD_RTYPE, 0, reg, dmabuf, 2,
-			      msecs_to_jiffies(MCS_CTRL_TIMEOUT));
-
-	memcpy(val, dmabuf, sizeof(__u16));
-	kfree(dmabuf);
-
-	return ret;
-}
-
-/* Setup a communication between mcs7780 and TFDU chips.  It is described
- * in more detail in the data sheet.  The setup sequence puts the the
- * vishay tranceiver into high speed mode.  It will also receive SIR speed
- * packets but at reduced sensitivity.
- */
-
-/* 0: OK 1:ERROR */
-static inline int mcs_setup_transceiver_vishay(struct mcs_cb *mcs)
-{
-	int ret = 0;
-	__u16 rval;
-
-	/* mcs_get_reg should read exactly two bytes from the dongle */
-	ret = mcs_get_reg(mcs, MCS_XCVR_REG, &rval);
-	if (unlikely(ret != 2)) {
-		ret = -EIO;
-		goto error;
-	}
-
-	/* The MCS_XCVR_CONF bit puts the transceiver into configuration
-	 * mode.  The MCS_MODE0 bit must start out high (1) and then
-	 * transition to low and the MCS_STFIR and MCS_MODE1 bits must
-	 * be low.
-	 */
-	rval |= (MCS_MODE0 | MCS_XCVR_CONF);
-	rval &= ~MCS_STFIR;
-	rval &= ~MCS_MODE1;
-	ret = mcs_set_reg(mcs, MCS_XCVR_REG, rval);
-	if (unlikely(ret))
-		goto error;
-
-	rval &= ~MCS_MODE0;
-	ret = mcs_set_reg(mcs, MCS_XCVR_REG, rval);
-	if (unlikely(ret))
-		goto error;
-
-	rval &= ~MCS_XCVR_CONF;
-	ret = mcs_set_reg(mcs, MCS_XCVR_REG, rval);
-	if (unlikely(ret))
-		goto error;
-
-	ret = 0;
-error:
-	return ret;
-}
-
-/* Setup a communication between mcs7780 and agilent chip. */
-static inline int mcs_setup_transceiver_agilent(struct mcs_cb *mcs)
-{
-	net_warn_ratelimited("This transceiver type is not supported yet\n");
-	return 1;
-}
-
-/* Setup a communication between mcs7780 and sharp chip. */
-static inline int mcs_setup_transceiver_sharp(struct mcs_cb *mcs)
-{
-	net_warn_ratelimited("This transceiver type is not supported yet\n");
-	return 1;
-}
-
-/* Common setup for all transceivers */
-static inline int mcs_setup_transceiver(struct mcs_cb *mcs)
-{
-	int ret = 0;
-	__u16 rval;
-	const char *msg;
-
-	msg = "Basic transceiver setup error";
-
-	/* read value of MODE Register, set the DRIVER and RESET bits
-	* and write value back out to MODE Register
-	*/
-	ret = mcs_get_reg(mcs, MCS_MODE_REG, &rval);
-	if(unlikely(ret != 2))
-		goto error;
-	rval |= MCS_DRIVER;	/* put the mcs7780 into configuration mode. */
-	ret = mcs_set_reg(mcs, MCS_MODE_REG, rval);
-	if(unlikely(ret))
-		goto error;
-
-	rval = 0;		/* set min pulse width to 0 initially. */
-	ret = mcs_set_reg(mcs, MCS_MINRXPW_REG, rval);
-	if(unlikely(ret))
-		goto error;
-
-	ret = mcs_get_reg(mcs, MCS_MODE_REG, &rval);
-	if(unlikely(ret != 2))
-		goto error;
-
-	rval &= ~MCS_FIR;	/* turn off fir mode. */
-	if(mcs->sir_tweak)
-		rval |= MCS_SIR16US;	/* 1.6us pulse width */
-	else
-		rval &= ~MCS_SIR16US;	/* 3/16 bit time pulse width */
-
-	/* make sure ask mode and back to back packets are off. */
-	rval &= ~(MCS_BBTG | MCS_ASK);
-
-	rval &= ~MCS_SPEED_MASK;
-	rval |= MCS_SPEED_9600;		/* make sure initial speed is 9600. */
-	mcs->speed = 9600;
-	mcs->new_speed = 0;		/* new_speed is set to 0 */
-	rval &= ~MCS_PLLPWDN;		/* disable power down. */
-
-	/* make sure device determines direction and that the auto send sip
-	 * pulse are on.
-	 */
-	rval |= MCS_DTD | MCS_SIPEN;
-
-	ret = mcs_set_reg(mcs, MCS_MODE_REG, rval);
-	if(unlikely(ret))
-		goto error;
-
-	msg = "transceiver model specific setup error";
-	switch (mcs->transceiver_type) {
-	case MCS_TSC_VISHAY:
-		ret = mcs_setup_transceiver_vishay(mcs);
-		break;
-
-	case MCS_TSC_SHARP:
-		ret = mcs_setup_transceiver_sharp(mcs);
-		break;
-
-	case MCS_TSC_AGILENT:
-		ret = mcs_setup_transceiver_agilent(mcs);
-		break;
-
-	default:
-		net_warn_ratelimited("Unknown transceiver type: %d\n",
-				     mcs->transceiver_type);
-		ret = 1;
-	}
-	if (unlikely(ret))
-		goto error;
-
-	/* If transceiver is not SHARP, then if receive mode set
-	* on the RXFAST bit in the XCVR Register otherwise unset it
-	*/
-	if (mcs->transceiver_type != MCS_TSC_SHARP) {
-
-		ret = mcs_get_reg(mcs, MCS_XCVR_REG, &rval);
-		if (unlikely(ret != 2))
-			goto error;
-		if (mcs->receive_mode)
-			rval |= MCS_RXFAST;
-		else
-			rval &= ~MCS_RXFAST;
-		ret = mcs_set_reg(mcs, MCS_XCVR_REG, rval);
-		if (unlikely(ret))
-			goto error;
-	}
-
-	msg = "transceiver reset";
-
-	ret = mcs_get_reg(mcs, MCS_MODE_REG, &rval);
-	if (unlikely(ret != 2))
-		goto error;
-
-	/* reset the mcs7780 so all changes take effect. */
-	rval &= ~MCS_RESET;
-	ret = mcs_set_reg(mcs, MCS_MODE_REG, rval);
-	if (unlikely(ret))
-		goto error;
-	else
-		return ret;
-
-error:
-	net_err_ratelimited("%s\n", msg);
-	return ret;
-}
-
-/* Wraps the data in format for SIR */
-static inline int mcs_wrap_sir_skb(struct sk_buff *skb, __u8 * buf)
-{
-	int wraplen;
-
-	/* 2: full frame length, including "the length" */
-	wraplen = async_wrap_skb(skb, buf + 2, 4094);
-
-	wraplen += 2;
-	buf[0] = wraplen & 0xff;
-	buf[1] = (wraplen >> 8) & 0xff;
-
-	return wraplen;
-}
-
-/* Wraps the data in format for FIR */
-static unsigned mcs_wrap_fir_skb(const struct sk_buff *skb, __u8 *buf)
-{
-	unsigned int len = 0;
-	__u32 fcs = ~(crc32_le(~0, skb->data, skb->len));
-
-	/* add 2 bytes for length value and 4 bytes for fcs. */
-	len = skb->len + 6;
-
-	/* The mcs7780 requires that the first two bytes are the packet
-	 * length in little endian order.  Note: the length value includes
-	 * the two bytes for the length value itself.
-	 */
-	buf[0] = len & 0xff;
-	buf[1] = (len >> 8) & 0xff;
-	/* copy the data into the tx buffer. */
-	skb_copy_from_linear_data(skb, buf + 2, skb->len);
-	/* put the fcs in the last four bytes in little endian order. */
-	buf[len - 4] = fcs & 0xff;
-	buf[len - 3] = (fcs >> 8) & 0xff;
-	buf[len - 2] = (fcs >> 16) & 0xff;
-	buf[len - 1] = (fcs >> 24) & 0xff;
-
-	return len;
-}
-
-/* Wraps the data in format for MIR */
-static unsigned mcs_wrap_mir_skb(const struct sk_buff *skb, __u8 *buf)
-{
-	__u16 fcs = 0;
-	int len = skb->len + 4;
-
-	fcs = ~(irda_calc_crc16(~fcs, skb->data, skb->len));
-	/* put the total packet length in first.  Note: packet length
-	 * value includes the two bytes that hold the packet length
-	 * itself.
-	 */
-	buf[0] = len & 0xff;
-	buf[1] = (len >> 8) & 0xff;
-	/* copy the data */
-	skb_copy_from_linear_data(skb, buf + 2, skb->len);
-	/* put the fcs in last two bytes in little endian order. */
-	buf[len - 2] = fcs & 0xff;
-	buf[len - 1] = (fcs >> 8) & 0xff;
-
-	return len;
-}
-
-/* Unwrap received packets at MIR speed.  A 16 bit crc_ccitt checksum is
- * used for the fcs.  When performed over the entire packet the result
- * should be GOOD_FCS = 0xf0b8.  Hands the unwrapped data off to the IrDA
- * layer via a sk_buff.
- */
-static void mcs_unwrap_mir(struct mcs_cb *mcs, __u8 *buf, int len)
-{
-	__u16 fcs;
-	int new_len;
-	struct sk_buff *skb;
-
-	/* Assume that the frames are going to fill a single packet
-	 * rather than span multiple packets.
-	 */
-
-	new_len = len - 2;
-	if(unlikely(new_len <= 0)) {
-		net_err_ratelimited("%s short frame length %d\n",
-				    mcs->netdev->name, new_len);
-		++mcs->netdev->stats.rx_errors;
-		++mcs->netdev->stats.rx_length_errors;
-		return;
-	}
-	fcs = 0;
-	fcs = irda_calc_crc16(~fcs, buf, len);
-
-	if(fcs != GOOD_FCS) {
-		net_err_ratelimited("crc error calc 0x%x len %d\n",
-				    fcs, new_len);
-		mcs->netdev->stats.rx_errors++;
-		mcs->netdev->stats.rx_crc_errors++;
-		return;
-	}
-
-	skb = dev_alloc_skb(new_len + 1);
-	if(unlikely(!skb)) {
-		++mcs->netdev->stats.rx_dropped;
-		return;
-	}
-
-	skb_reserve(skb, 1);
-	skb_copy_to_linear_data(skb, buf, new_len);
-	skb_put(skb, new_len);
-	skb_reset_mac_header(skb);
-	skb->protocol = htons(ETH_P_IRDA);
-	skb->dev = mcs->netdev;
-
-	netif_rx(skb);
-
-	mcs->netdev->stats.rx_packets++;
-	mcs->netdev->stats.rx_bytes += new_len;
-}
-
-/* Unwrap received packets at FIR speed.  A 32 bit crc_ccitt checksum is
- * used for the fcs.  Hands the unwrapped data off to the IrDA
- * layer via a sk_buff.
- */
-static void mcs_unwrap_fir(struct mcs_cb *mcs, __u8 *buf, int len)
-{
-	__u32 fcs;
-	int new_len;
-	struct sk_buff *skb;
-
-	/* Assume that the frames are going to fill a single packet
-	 * rather than span multiple packets.  This is most likely a false
-	 * assumption.
-	 */
-
-	new_len = len - 4;
-	if(unlikely(new_len <= 0)) {
-		net_err_ratelimited("%s short frame length %d\n",
-				    mcs->netdev->name, new_len);
-		++mcs->netdev->stats.rx_errors;
-		++mcs->netdev->stats.rx_length_errors;
-		return;
-	}
-
-	fcs = ~(crc32_le(~0, buf, new_len));
-	if(fcs != get_unaligned_le32(buf + new_len)) {
-		net_err_ratelimited("crc error calc 0x%x len %d\n",
-				    fcs, new_len);
-		mcs->netdev->stats.rx_errors++;
-		mcs->netdev->stats.rx_crc_errors++;
-		return;
-	}
-
-	skb = dev_alloc_skb(new_len + 1);
-	if(unlikely(!skb)) {
-		++mcs->netdev->stats.rx_dropped;
-		return;
-	}
-
-	skb_reserve(skb, 1);
-	skb_copy_to_linear_data(skb, buf, new_len);
-	skb_put(skb, new_len);
-	skb_reset_mac_header(skb);
-	skb->protocol = htons(ETH_P_IRDA);
-	skb->dev = mcs->netdev;
-
-	netif_rx(skb);
-
-	mcs->netdev->stats.rx_packets++;
-	mcs->netdev->stats.rx_bytes += new_len;
-}
-
-
-/* Allocates urbs for both receive and transmit.
- * If alloc fails return error code 0 (fail) otherwise
- * return error code 1 (success).
- */
-static inline int mcs_setup_urbs(struct mcs_cb *mcs)
-{
-	mcs->rx_urb = NULL;
-
-	mcs->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!mcs->tx_urb)
-		return 0;
-
-	mcs->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
-	if (!mcs->rx_urb) {
-		usb_free_urb(mcs->tx_urb);
-		mcs->tx_urb = NULL;
-		return 0;
-	}
-
-	return 1;
-}
-
-/* Sets up state to be initially outside frame, gets receive urb,
- * sets status to successful and then submits the urb to start
- * receiving the data.
- */
-static inline int mcs_receive_start(struct mcs_cb *mcs)
-{
-	mcs->rx_buff.in_frame = FALSE;
-	mcs->rx_buff.state = OUTSIDE_FRAME;
-
-	usb_fill_bulk_urb(mcs->rx_urb, mcs->usbdev,
-			  usb_rcvbulkpipe(mcs->usbdev, mcs->ep_in),
-			  mcs->in_buf, 4096, mcs_receive_irq, mcs);
-
-	mcs->rx_urb->status = 0;
-	return usb_submit_urb(mcs->rx_urb, GFP_KERNEL);
-}
-
-/* Finds the in and out endpoints for the mcs control block */
-static inline int mcs_find_endpoints(struct mcs_cb *mcs,
-				     struct usb_host_endpoint *ep, int epnum)
-{
-	int i;
-	int ret = 0;
-
-	/* If no place to store the endpoints just return */
-	if (!ep)
-		return ret;
-
-	/* cycle through all endpoints, find the first two that are DIR_IN */
-	for (i = 0; i < epnum; i++) {
-		if (ep[i].desc.bEndpointAddress & USB_DIR_IN)
-			mcs->ep_in = ep[i].desc.bEndpointAddress;
-		else
-			mcs->ep_out = ep[i].desc.bEndpointAddress;
-
-		/* MosChip says that the chip has only two bulk
-		 * endpoints. Find one for each direction and move on.
-		 */
-		if ((mcs->ep_in != 0) && (mcs->ep_out != 0)) {
-			ret = 1;
-			break;
-		}
-	}
-
-	return ret;
-}
-
-static void mcs_speed_work(struct work_struct *work)
-{
-	struct mcs_cb *mcs = container_of(work, struct mcs_cb, work);
-	struct net_device *netdev = mcs->netdev;
-
-	mcs_speed_change(mcs);
-	netif_wake_queue(netdev);
-}
-
-/* Function to change the speed of the mcs7780.  Fully supports SIR,
- * MIR, and FIR speeds.
- */
-static int mcs_speed_change(struct mcs_cb *mcs)
-{
-	int ret = 0;
-	int rst = 0;
-	int cnt = 0;
-	__u16 nspeed;
-	__u16 rval;
-
-	nspeed = mcs_speed_set[(mcs->new_speed >> 8) & 0x0f];
-
-	do {
-		mcs_get_reg(mcs, MCS_RESV_REG, &rval);
-	} while(cnt++ < 100 && (rval & MCS_IRINTX));
-
-	if (cnt > 100) {
-		net_err_ratelimited("unable to change speed\n");
-		ret = -EIO;
-		goto error;
-	}
-
-	mcs_get_reg(mcs, MCS_MODE_REG, &rval);
-
-	/* MINRXPW values recommended by MosChip */
-	if (mcs->new_speed <= 115200) {
-		rval &= ~MCS_FIR;
-
-		if ((rst = (mcs->speed > 115200)))
-			mcs_set_reg(mcs, MCS_MINRXPW_REG, 0);
-
-	} else if (mcs->new_speed <= 1152000) {
-		rval &= ~MCS_FIR;
-
-		if ((rst = !(mcs->speed == 576000 || mcs->speed == 1152000)))
-			mcs_set_reg(mcs, MCS_MINRXPW_REG, 5);
-
-	} else {
-		rval |= MCS_FIR;
-
-		if ((rst = (mcs->speed != 4000000)))
-			mcs_set_reg(mcs, MCS_MINRXPW_REG, 5);
-
-	}
-
-	rval &= ~MCS_SPEED_MASK;
-	rval |= nspeed;
-
-	ret = mcs_set_reg(mcs, MCS_MODE_REG, rval);
-	if (unlikely(ret))
-		goto error;
-
-	if (rst)
-		switch (mcs->transceiver_type) {
-		case MCS_TSC_VISHAY:
-			ret = mcs_setup_transceiver_vishay(mcs);
-			break;
-
-		case MCS_TSC_SHARP:
-			ret = mcs_setup_transceiver_sharp(mcs);
-			break;
-
-		case MCS_TSC_AGILENT:
-			ret = mcs_setup_transceiver_agilent(mcs);
-			break;
-
-		default:
-			ret = 1;
-			net_warn_ratelimited("Unknown transceiver type: %d\n",
-					     mcs->transceiver_type);
-		}
-	if (unlikely(ret))
-		goto error;
-
-	mcs_get_reg(mcs, MCS_MODE_REG, &rval);
-	rval &= ~MCS_RESET;
-	ret = mcs_set_reg(mcs, MCS_MODE_REG, rval);
-
-	mcs->speed = mcs->new_speed;
-error:
-	mcs->new_speed = 0;
-	return ret;
-}
-
-/* Ioctl calls not supported at this time.  Can be an area of future work. */
-static int mcs_net_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
-{
-	/* struct if_irda_req *irq = (struct if_irda_req *)rq; */
-	/* struct mcs_cb *mcs = netdev_priv(netdev); */
-	int ret = 0;
-
-	switch (cmd) {
-	default:
-		ret = -EOPNOTSUPP;
-	}
-
-	return ret;
-}
-
-/* Network device is taken down, done by "ifconfig irda0 down" */
-static int mcs_net_close(struct net_device *netdev)
-{
-	int ret = 0;
-	struct mcs_cb *mcs = netdev_priv(netdev);
-
-	/* Stop transmit processing */
-	netif_stop_queue(netdev);
-
-	kfree_skb(mcs->rx_buff.skb);
-
-	/* kill and free the receive and transmit URBs */
-	usb_kill_urb(mcs->rx_urb);
-	usb_free_urb(mcs->rx_urb);
-	usb_kill_urb(mcs->tx_urb);
-	usb_free_urb(mcs->tx_urb);
-
-	/* Stop and remove instance of IrLAP */
-	if (mcs->irlap)
-		irlap_close(mcs->irlap);
-
-	mcs->irlap = NULL;
-	return ret;
-}
-
-/* Network device is taken up, done by "ifconfig irda0 up" */
-static int mcs_net_open(struct net_device *netdev)
-{
-	struct mcs_cb *mcs = netdev_priv(netdev);
-	char hwname[16];
-	int ret = 0;
-
-	ret = usb_clear_halt(mcs->usbdev,
-			     usb_sndbulkpipe(mcs->usbdev, mcs->ep_in));
-	if (ret)
-		goto error1;
-	ret = usb_clear_halt(mcs->usbdev,
-			     usb_rcvbulkpipe(mcs->usbdev, mcs->ep_out));
-	if (ret)
-		goto error1;
-
-	ret = mcs_setup_transceiver(mcs);
-	if (ret)
-		goto error1;
-
-	ret = -ENOMEM;
-
-	/* Initialize for SIR/FIR to copy data directly into skb.  */
-	mcs->receiving = 0;
-	mcs->rx_buff.truesize = IRDA_SKB_MAX_MTU;
-	mcs->rx_buff.skb = dev_alloc_skb(IRDA_SKB_MAX_MTU);
-	if (!mcs->rx_buff.skb)
-		goto error1;
-
-	skb_reserve(mcs->rx_buff.skb, 1);
-	mcs->rx_buff.head = mcs->rx_buff.skb->data;
-
-	/*
-	 * Now that everything should be initialized properly,
-	 * Open new IrLAP layer instance to take care of us...
-	 * Note : will send immediately a speed change...
-	 */
-	sprintf(hwname, "usb#%d", mcs->usbdev->devnum);
-	mcs->irlap = irlap_open(netdev, &mcs->qos, hwname);
-	if (!mcs->irlap) {
-		net_err_ratelimited("mcs7780: irlap_open failed\n");
-		goto error2;
-	}
-
-	if (!mcs_setup_urbs(mcs))
-		goto error3;
-
-	ret = mcs_receive_start(mcs);
-	if (ret)
-		goto error4;
-
-	netif_start_queue(netdev);
-	return 0;
-
-error4:
-	usb_free_urb(mcs->rx_urb);
-	usb_free_urb(mcs->tx_urb);
-error3:
-	irlap_close(mcs->irlap);
-error2:
-	kfree_skb(mcs->rx_buff.skb);
-error1:
-	return ret;
-}
-
-/* Receive callback function.  */
-static void mcs_receive_irq(struct urb *urb)
-{
-	__u8 *bytes;
-	struct mcs_cb *mcs = urb->context;
-	int i;
-	int ret;
-
-	if (!netif_running(mcs->netdev))
-		return;
-
-	if (urb->status)
-		return;
-
-	if (urb->actual_length > 0) {
-		bytes = urb->transfer_buffer;
-
-		/* MCS returns frames without BOF and EOF
-		 * I assume it returns whole frames.
-		 */
-		/* SIR speed */
-		if(mcs->speed < 576000) {
-			async_unwrap_char(mcs->netdev, &mcs->netdev->stats,
-				  &mcs->rx_buff, 0xc0);
-
-			for (i = 0; i < urb->actual_length; i++)
-				async_unwrap_char(mcs->netdev, &mcs->netdev->stats,
-					  &mcs->rx_buff, bytes[i]);
-
-			async_unwrap_char(mcs->netdev, &mcs->netdev->stats,
-				  &mcs->rx_buff, 0xc1);
-		}
-		/* MIR speed */
-		else if(mcs->speed == 576000 || mcs->speed == 1152000) {
-			mcs_unwrap_mir(mcs, urb->transfer_buffer,
-				urb->actual_length);
-		}
-		/* FIR speed */
-		else {
-			mcs_unwrap_fir(mcs, urb->transfer_buffer,
-				urb->actual_length);
-		}
-	}
-
-	ret = usb_submit_urb(urb, GFP_ATOMIC);
-}
-
-/* Transmit callback function.  */
-static void mcs_send_irq(struct urb *urb)
-{
-	struct mcs_cb *mcs = urb->context;
-	struct net_device *ndev = mcs->netdev;
-
-	if (unlikely(mcs->new_speed))
-		schedule_work(&mcs->work);
-	else
-		netif_wake_queue(ndev);
-}
-
-/* Transmit callback function.  */
-static netdev_tx_t mcs_hard_xmit(struct sk_buff *skb,
-				       struct net_device *ndev)
-{
-	unsigned long flags;
-	struct mcs_cb *mcs;
-	int wraplen;
-	int ret = 0;
-
-	netif_stop_queue(ndev);
-	mcs = netdev_priv(ndev);
-
-	spin_lock_irqsave(&mcs->lock, flags);
-
-	mcs->new_speed = irda_get_next_speed(skb);
-	if (likely(mcs->new_speed == mcs->speed))
-		mcs->new_speed = 0;
-
-	/* SIR speed */
-	if(mcs->speed < 576000) {
-		wraplen = mcs_wrap_sir_skb(skb, mcs->out_buf);
-	}
-	/* MIR speed */
-	else if(mcs->speed == 576000 || mcs->speed == 1152000) {
-		wraplen = mcs_wrap_mir_skb(skb, mcs->out_buf);
-	}
-	/* FIR speed */
-	else {
-		wraplen = mcs_wrap_fir_skb(skb, mcs->out_buf);
-	}
-	usb_fill_bulk_urb(mcs->tx_urb, mcs->usbdev,
-			  usb_sndbulkpipe(mcs->usbdev, mcs->ep_out),
-			  mcs->out_buf, wraplen, mcs_send_irq, mcs);
-
-	if ((ret = usb_submit_urb(mcs->tx_urb, GFP_ATOMIC))) {
-		net_err_ratelimited("failed tx_urb: %d\n", ret);
-		switch (ret) {
-		case -ENODEV:
-		case -EPIPE:
-			break;
-		default:
-			mcs->netdev->stats.tx_errors++;
-			netif_start_queue(ndev);
-		}
-	} else {
-		mcs->netdev->stats.tx_packets++;
-		mcs->netdev->stats.tx_bytes += skb->len;
-	}
-
-	dev_kfree_skb(skb);
-	spin_unlock_irqrestore(&mcs->lock, flags);
-	return NETDEV_TX_OK;
-}
-
-static const struct net_device_ops mcs_netdev_ops = {
-	.ndo_open = mcs_net_open,
-	.ndo_stop = mcs_net_close,
-	.ndo_start_xmit = mcs_hard_xmit,
-	.ndo_do_ioctl = mcs_net_ioctl,
-};
-
-/*
- * This function is called by the USB subsystem for each new device in the
- * system.  Need to verify the device and if it is, then start handling it.
- */
-static int mcs_probe(struct usb_interface *intf,
-		     const struct usb_device_id *id)
-{
-	struct usb_device *udev = interface_to_usbdev(intf);
-	struct net_device *ndev = NULL;
-	struct mcs_cb *mcs;
-	int ret = -ENOMEM;
-
-	ndev = alloc_irdadev(sizeof(*mcs));
-	if (!ndev)
-		goto error1;
-
-	pr_debug("MCS7780 USB-IrDA bridge found at %d.\n", udev->devnum);
-
-	SET_NETDEV_DEV(ndev, &intf->dev);
-
-	ret = usb_reset_configuration(udev);
-	if (ret != 0) {
-		net_err_ratelimited("mcs7780: usb reset configuration failed\n");
-		goto error2;
-	}
-
-	mcs = netdev_priv(ndev);
-	mcs->usbdev = udev;
-	mcs->netdev = ndev;
-	spin_lock_init(&mcs->lock);
-
-	/* Initialize QoS for this device */
-	irda_init_max_qos_capabilies(&mcs->qos);
-
-	/* That's the Rx capability. */
-	mcs->qos.baud_rate.bits &=
-	    IR_2400 | IR_9600 | IR_19200 | IR_38400 | IR_57600 | IR_115200
-		| IR_576000 | IR_1152000 | (IR_4000000 << 8);
-
-
-	mcs->qos.min_turn_time.bits &= qos_mtt_bits;
-	irda_qos_bits_to_value(&mcs->qos);
-
-	/* Speed change work initialisation*/
-	INIT_WORK(&mcs->work, mcs_speed_work);
-
-	ndev->netdev_ops = &mcs_netdev_ops;
-
-	if (!intf->cur_altsetting) {
-		ret = -ENOMEM;
-		goto error2;
-	}
-
-	ret = mcs_find_endpoints(mcs, intf->cur_altsetting->endpoint,
-				 intf->cur_altsetting->desc.bNumEndpoints);
-	if (!ret) {
-		ret = -ENODEV;
-		goto error2;
-	}
-
-	ret = register_netdev(ndev);
-	if (ret != 0)
-		goto error2;
-
-	pr_debug("IrDA: Registered MosChip MCS7780 device as %s\n",
-		 ndev->name);
-
-	mcs->transceiver_type = transceiver_type;
-	mcs->sir_tweak = sir_tweak;
-	mcs->receive_mode = receive_mode;
-
-	usb_set_intfdata(intf, mcs);
-	return 0;
-
-error2:
-	free_netdev(ndev);
-
-error1:
-	return ret;
-}
-
-/* The current device is removed, the USB layer tells us to shut down. */
-static void mcs_disconnect(struct usb_interface *intf)
-{
-	struct mcs_cb *mcs = usb_get_intfdata(intf);
-
-	if (!mcs)
-		return;
-
-	cancel_work_sync(&mcs->work);
-
-	unregister_netdev(mcs->netdev);
-	free_netdev(mcs->netdev);
-
-	usb_set_intfdata(intf, NULL);
-	pr_debug("MCS7780 now disconnected.\n");
-}
-
-module_usb_driver(mcs_driver);