Staging: ccg: delete it from the tree

Now that it isn't in the build, just delete the ccg driver from the tree
entirely.

Cc: John Stultz <john.stultz@linaro.org>
Cc: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

23 files changed, 0 insertions, 16541 deletions

diff --git a/drivers/staging/ccg/Kconfig b/drivers/staging/ccg/Kconfig
deleted file mode 100644
index 7ed5bc6caadb..000000000000
--- a/drivers/staging/ccg/Kconfig
+++ /dev/null
@@ -1,25 +0,0 @@
-if USB_GADGET
-
-config USB_G_CCG
-	tristate "Configurable Composite Gadget (STAGING)"
-	depends on STAGING && BLOCK && NET && !USB_ZERO && !USB_ZERO_HNPTEST && !USB_AUDIO && !GADGET_UAC1 && !USB_ETH && !USB_ETH_RNDIS && !USB_ETH_EEM && !USB_G_NCM && !USB_GADGETFS && !USB_FUNCTIONFS && !USB_FUNCTIONFS_ETH && !USB_FUNCTIONFS_RNDIS && !USB_FUNCTIONFS_GENERIC && !USB_FILE_STORAGE && !USB_FILE_STORAGE_TEST && !USB_MASS_STORAGE && !USB_G_SERIAL && !USB_MIDI_GADGET && !USB_G_PRINTER && !USB_CDC_COMPOSITE && !USB_G_NOKIA && !USB_G_ACM_MS && !USB_G_MULTI && !USB_G_MULTI_RNDIS && !USB_G_MULTI_CDC && !USB_G_HID && !USB_G_DBGP && !USB_G_WEBCAM && TTY
-	help
-	  The Configurable Composite Gadget supports multiple USB
-	  functions: acm, mass storage, rndis and FunctionFS.
-	  Each function can be configured and enabled/disabled
-	  dynamically from userspace through a sysfs interface.
-
-	  In order to compile this (either as a module or built-in),
-	  "USB Gadget Drivers" and anything under it must not be
-	  selected compiled-in in
-	  Device Drivers->USB Support->USB Gadget Support.
-	  However, you can say "M" there, if you do, the
-	  Configurable Composite Gadget can be compiled "M" only
-	  or not at all.
-
-	  BIG FAT NOTE: DON'T RELY ON THIS USERINTERFACE HERE! AS PART
-	  OF THE REWORK DONE HERE WILL BE A NEW USER INTERFACE WITHOUT ANY
-	  COMPATIBILITY TO THIS SYSFS INTERFACE HERE. BE AWARE OF THIS
-	  BEFORE SELECTING THIS.
-
-endif # USB_GADGET
diff --git a/drivers/staging/ccg/Makefile b/drivers/staging/ccg/Makefile
deleted file mode 100644
index 814fa9de5f57..000000000000
--- a/drivers/staging/ccg/Makefile
+++ /dev/null
@@ -1,2 +0,0 @@
-g_ccg-y				:= ccg.o
-obj-$(CONFIG_USB_G_CCG)		+= g_ccg.o
diff --git a/drivers/staging/ccg/TODO b/drivers/staging/ccg/TODO
deleted file mode 100644
index 18612fe70171..000000000000
--- a/drivers/staging/ccg/TODO
+++ /dev/null
@@ -1,6 +0,0 @@
-TODO:
-	- change configuration interface from sysfs to configfs
-
-Please send patches to Greg Kroah-Hartmann <gregkh@linuxfoundation.org>,
-Andrzej Pietrasiewicz <andrzej.p@samsung.com>, and
-Cc: Mike Lockwood <lockwood@android.com>
diff --git a/drivers/staging/ccg/ccg.c b/drivers/staging/ccg/ccg.c
deleted file mode 100644
index ffc5f73a5b5b..000000000000
--- a/drivers/staging/ccg/ccg.c
+++ /dev/null
@@ -1,1292 +0,0 @@
-/*
- * Configurable Composite Gadget
- *
- * Initially contributed as "Android Composite Gdaget" by:
- *
- * Copyright (C) 2008 Google, Inc.
- * Author: Mike Lockwood <lockwood@android.com>
- *         Benoit Goby <benoit@android.com>
- *
- * Tailoring it to become a generic Configurable Composite Gadget is
- *
- * Copyright (C) 2012 Samsung Electronics
- * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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.
- *
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/delay.h>
-#include <linux/kernel.h>
-#include <linux/utsname.h>
-#include <linux/platform_device.h>
-
-#include <linux/usb/ch9.h>
-#include "composite.h"
-#include <linux/usb/gadget.h>
-
-#include "gadget_chips.h"
-
-/*
- * Kbuild is not very cooperative with respect to linking separately
- * compiled library objects into one module.  So for now we won't use
- * separate compilation ... ensuring init/exit sections work to shrink
- * the runtime footprint, and giving us at least some parts of what
- * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
- */
-#include "usbstring.c"
-#include "config.c"
-#include "epautoconf.c"
-#include "composite.c"
-
-#include "f_mass_storage.c"
-#include "u_serial.c"
-#include "f_acm.c"
-#define USB_ETH_RNDIS y
-#include "f_rndis.c"
-#include "rndis.c"
-#include "u_ether.c"
-#include "f_fs.c"
-
-MODULE_AUTHOR("Mike Lockwood, Andrzej Pietrasiewicz");
-MODULE_DESCRIPTION("Configurable Composite USB Gadget");
-MODULE_LICENSE("GPL");
-MODULE_VERSION("1.0");
-
-static const char longname[] = "Configurable Composite Gadget";
-
-/* Default vendor and product IDs, overridden by userspace */
-#define VENDOR_ID		0x1d6b /* Linux Foundation */
-#define PRODUCT_ID		0x0107
-#define GFS_MAX_DEVS		10
-
-struct ccg_usb_function {
-	char *name;
-	void *config;
-
-	struct device *dev;
-	char *dev_name;
-	struct device_attribute **attributes;
-
-	/* for ccg_dev.enabled_functions */
-	struct list_head enabled_list;
-
-	/* Optional: initialization during gadget bind */
-	int (*init)(struct ccg_usb_function *, struct usb_composite_dev *);
-	/* Optional: cleanup during gadget unbind */
-	void (*cleanup)(struct ccg_usb_function *);
-
-	int (*bind_config)(struct ccg_usb_function *,
-			   struct usb_configuration *);
-
-	/* Optional: called when the configuration is removed */
-	void (*unbind_config)(struct ccg_usb_function *,
-			      struct usb_configuration *);
-	/* Optional: handle ctrl requests before the device is configured */
-	int (*ctrlrequest)(struct ccg_usb_function *,
-			   struct usb_composite_dev *,
-			   const struct usb_ctrlrequest *);
-};
-
-struct ffs_obj {
-	const char *name;
-	bool mounted;
-	bool desc_ready;
-	bool used;
-	struct ffs_data *ffs_data;
-};
-
-struct ccg_dev {
-	struct ccg_usb_function **functions;
-	struct list_head enabled_functions;
-	struct usb_composite_dev *cdev;
-	struct device *dev;
-
-	bool enabled;
-	struct mutex mutex;
-	bool connected;
-	bool sw_connected;
-	struct work_struct work;
-
-	unsigned int max_func_num;
-	unsigned int func_num;
-	struct ffs_obj ffs_tab[GFS_MAX_DEVS];
-};
-
-static struct class *ccg_class;
-static struct ccg_dev *_ccg_dev;
-static int ccg_bind_config(struct usb_configuration *c);
-static void ccg_unbind_config(struct usb_configuration *c);
-
-static char func_names_buf[256];
-
-static struct usb_device_descriptor device_desc = {
-	.bLength              = sizeof(device_desc),
-	.bDescriptorType      = USB_DT_DEVICE,
-	.bcdUSB               = __constant_cpu_to_le16(0x0200),
-	.bDeviceClass         = USB_CLASS_PER_INTERFACE,
-	.idVendor             = __constant_cpu_to_le16(VENDOR_ID),
-	.idProduct            = __constant_cpu_to_le16(PRODUCT_ID),
-	.bcdDevice            = __constant_cpu_to_le16(0xffff),
-	.bNumConfigurations   = 1,
-};
-
-static struct usb_configuration ccg_config_driver = {
-	.label		= "ccg",
-	.unbind		= ccg_unbind_config,
-	.bConfigurationValue = 1,
-	.bmAttributes	= USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER,
-	.bMaxPower	= 0xFA, /* 500ma */
-};
-
-static void ccg_work(struct work_struct *data)
-{
-	struct ccg_dev *dev = container_of(data, struct ccg_dev, work);
-	struct usb_composite_dev *cdev = dev->cdev;
-	static char *disconnected[2] = { "USB_STATE=DISCONNECTED", NULL };
-	static char *connected[2]    = { "USB_STATE=CONNECTED", NULL };
-	static char *configured[2]   = { "USB_STATE=CONFIGURED", NULL };
-	char **uevent_envp = NULL;
-	unsigned long flags;
-
-	spin_lock_irqsave(&cdev->lock, flags);
-	if (cdev->config)
-		uevent_envp = configured;
-	else if (dev->connected != dev->sw_connected)
-		uevent_envp = dev->connected ? connected : disconnected;
-	dev->sw_connected = dev->connected;
-	spin_unlock_irqrestore(&cdev->lock, flags);
-
-	if (uevent_envp) {
-		kobject_uevent_env(&dev->dev->kobj, KOBJ_CHANGE, uevent_envp);
-		pr_info("%s: sent uevent %s\n", __func__, uevent_envp[0]);
-	} else {
-		pr_info("%s: did not send uevent (%d %d %p)\n", __func__,
-			 dev->connected, dev->sw_connected, cdev->config);
-	}
-}
-
-
-/*-------------------------------------------------------------------------*/
-/* Supported functions initialization */
-
-static struct ffs_obj *functionfs_find_dev(struct ccg_dev *dev,
-					   const char *dev_name)
-{
-	int i;
-
-	for (i = 0; i < dev->max_func_num; i++)
-		if (strcmp(dev->ffs_tab[i].name, dev_name) == 0)
-			return &dev->ffs_tab[i];
-
-	return NULL;
-}
-
-static bool functionfs_all_ready(struct ccg_dev *dev)
-{
-	int i;
-
-	for (i = 0; i < dev->max_func_num; i++)
-		if (dev->ffs_tab[i].used && !dev->ffs_tab[i].desc_ready)
-			return false;
-
-	return true;
-}
-
-static int functionfs_ready_callback(struct ffs_data *ffs)
-{
-	struct ffs_obj *ffs_obj;
-	int ret;
-
-	mutex_lock(&_ccg_dev->mutex);
-
-	ffs_obj = ffs->private_data;
-	if (!ffs_obj) {
-		ret = -EINVAL;
-		goto done;
-	}
-	if (WARN_ON(ffs_obj->desc_ready)) {
-		ret = -EBUSY;
-		goto done;
-	}
-	ffs_obj->ffs_data = ffs;
-
-	if (functionfs_all_ready(_ccg_dev)) {
-		ret = -EBUSY;
-		goto done;
-	}
-	ffs_obj->desc_ready = true;
-
-done:
-	mutex_unlock(&_ccg_dev->mutex);
-	return ret;
-}
-
-static void reset_usb(struct ccg_dev *dev)
-{
-	/* Cancel pending control requests */
-	usb_ep_dequeue(dev->cdev->gadget->ep0, dev->cdev->req);
-	usb_remove_config(dev->cdev, &ccg_config_driver);
-	dev->enabled = false;
-	usb_gadget_disconnect(dev->cdev->gadget);
-}
-
-static void functionfs_closed_callback(struct ffs_data *ffs)
-{
-	struct ffs_obj *ffs_obj;
-
-	mutex_lock(&_ccg_dev->mutex);
-
-	ffs_obj = ffs->private_data;
-	if (!ffs_obj)
-		goto done;
-
-	ffs_obj->desc_ready = false;
-
-	if (_ccg_dev->enabled)
-		reset_usb(_ccg_dev);
-
-done:
-	mutex_unlock(&_ccg_dev->mutex);
-}
-
-static void *functionfs_acquire_dev_callback(const char *dev_name)
-{
-	struct ffs_obj *ffs_dev;
-
-	mutex_lock(&_ccg_dev->mutex);
-
-	ffs_dev = functionfs_find_dev(_ccg_dev, dev_name);
-	if (!ffs_dev) {
-		ffs_dev = ERR_PTR(-ENODEV);
-		goto done;
-	}
-
-	if (ffs_dev->mounted) {
-		ffs_dev = ERR_PTR(-EBUSY);
-		goto done;
-	}
-	ffs_dev->mounted = true;
-
-done:
-	mutex_unlock(&_ccg_dev->mutex);
-	return ffs_dev;
-}
-
-static void functionfs_release_dev_callback(struct ffs_data *ffs_data)
-{
-	struct ffs_obj *ffs_dev;
-
-	mutex_lock(&_ccg_dev->mutex);
-
-	ffs_dev = ffs_data->private_data;
-	if (ffs_dev)
-		ffs_dev->mounted = false;
-
-	mutex_unlock(&_ccg_dev->mutex);
-}
-
-static int functionfs_function_init(struct ccg_usb_function *f,
-				struct usb_composite_dev *cdev)
-{
-	return functionfs_init();
-}
-
-static void functionfs_function_cleanup(struct ccg_usb_function *f)
-{
-	functionfs_cleanup();
-}
-
-static int functionfs_function_bind_config(struct ccg_usb_function *f,
-					   struct usb_configuration *c)
-{
-	struct ccg_dev *dev = _ccg_dev;
-	int i, ret;
-
-	for (i = dev->max_func_num; i--; ) {
-		if (!dev->ffs_tab[i].used)
-			continue;
-		ret = functionfs_bind(dev->ffs_tab[i].ffs_data, c->cdev);
-		if (unlikely(ret < 0)) {
-			while (++i < dev->max_func_num)
-				functionfs_unbind(dev->ffs_tab[i].ffs_data);
-			return ret;
-		}
-	}
-
-	for (i = dev->max_func_num; i--; ) {
-		if (!dev->ffs_tab[i].used)
-			continue;
-		ret = functionfs_bind_config(c->cdev, c,
-					     dev->ffs_tab[i].ffs_data);
-		if (unlikely(ret < 0))
-			return ret;
-	}
-
-	return 0;
-}
-
-static void functionfs_function_unbind_config(struct ccg_usb_function *f,
-					      struct usb_configuration *c)
-{
-	struct ccg_dev *dev = _ccg_dev;
-	int i;
-
-	for (i = dev->max_func_num; i--; )
-		if (dev->ffs_tab[i].ffs_data)
-			functionfs_unbind(dev->ffs_tab[i].ffs_data);
-}
-
-static ssize_t functionfs_user_functions_show(struct device *_dev,
-					      struct device_attribute *attr,
-					      char *buf)
-{
-	struct ccg_dev *dev = _ccg_dev;
-	char *buff = buf;
-	int i;
-
-	mutex_lock(&dev->mutex);
-
-	for (i = 0; i < dev->max_func_num; i++)
-		buff += snprintf(buff, PAGE_SIZE + buf - buff, "%s,",
-				 dev->ffs_tab[i].name);
-
-	mutex_unlock(&dev->mutex);
-
-	if (buff != buf)
-		*(buff - 1) = '\n';
-	return buff - buf;
-}
-
-static ssize_t functionfs_user_functions_store(struct device *_dev,
-					       struct device_attribute *attr,
-					       const char *buff, size_t size)
-{
-	struct ccg_dev *dev = _ccg_dev;
-	char *name, *b;
-	ssize_t ret = size;
-	int i;
-
-	buff = skip_spaces(buff);
-	if (!*buff)
-		return -EINVAL;
-
-	mutex_lock(&dev->mutex);
-
-	if (dev->enabled) {
-		ret = -EBUSY;
-		goto end;
-	}
-
-	for (i = 0; i < dev->max_func_num; i++)
-		if (dev->ffs_tab[i].mounted) {
-			ret = -EBUSY;
-			goto end;
-		}
-
-	strlcpy(func_names_buf, buff, sizeof(func_names_buf));
-	b = strim(func_names_buf);
-
-	/* replace the list of functions */
-	dev->max_func_num = 0;
-	while (b) {
-		name = strsep(&b, ",");
-		if (dev->max_func_num == GFS_MAX_DEVS) {
-			ret = -ENOSPC;
-			goto end;
-		}
-		if (functionfs_find_dev(dev, name)) {
-			ret = -EEXIST;
-			continue;
-		}
-		dev->ffs_tab[dev->max_func_num++].name = name;
-	}
-
-end:
-	mutex_unlock(&dev->mutex);
-	return ret;
-}
-
-static DEVICE_ATTR(user_functions, S_IRUGO | S_IWUSR,
-		   functionfs_user_functions_show,
-		   functionfs_user_functions_store);
-
-static ssize_t functionfs_max_user_functions_show(struct device *_dev,
-						  struct device_attribute *attr,
-						  char *buf)
-{
-	return sprintf(buf, "%d", GFS_MAX_DEVS);
-}
-
-static DEVICE_ATTR(max_user_functions, S_IRUGO,
-		   functionfs_max_user_functions_show, NULL);
-
-static struct device_attribute *functionfs_function_attributes[] = {
-	&dev_attr_user_functions,
-	&dev_attr_max_user_functions,
-	NULL
-};
-
-static struct ccg_usb_function functionfs_function = {
-	.name		= "fs",
-	.init		= functionfs_function_init,
-	.cleanup	= functionfs_function_cleanup,
-	.bind_config	= functionfs_function_bind_config,
-	.unbind_config  = functionfs_function_unbind_config,
-	.attributes	= functionfs_function_attributes,
-};
-
-#define MAX_ACM_INSTANCES 4
-struct acm_function_config {
-	int instances;
-};
-
-static int
-acm_function_init(struct ccg_usb_function *f, struct usb_composite_dev *cdev)
-{
-	f->config = kzalloc(sizeof(struct acm_function_config), GFP_KERNEL);
-	if (!f->config)
-		return -ENOMEM;
-
-	return gserial_setup(cdev->gadget, MAX_ACM_INSTANCES);
-}
-
-static void acm_function_cleanup(struct ccg_usb_function *f)
-{
-	gserial_cleanup();
-	kfree(f->config);
-	f->config = NULL;
-}
-
-static int
-acm_function_bind_config(struct ccg_usb_function *f,
-		struct usb_configuration *c)
-{
-	int i;
-	int ret = 0;
-	struct acm_function_config *config = f->config;
-
-	for (i = 0; i < config->instances; i++) {
-		ret = acm_bind_config(c, i);
-		if (ret) {
-			pr_err("Could not bind acm%u config\n", i);
-			break;
-		}
-	}
-
-	return ret;
-}
-
-static ssize_t acm_instances_show(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct ccg_usb_function *f = dev_get_drvdata(dev);
-	struct acm_function_config *config = f->config;
-	return sprintf(buf, "%d\n", config->instances);
-}
-
-static ssize_t acm_instances_store(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t size)
-{
-	struct ccg_usb_function *f = dev_get_drvdata(dev);
-	struct acm_function_config *config = f->config;
-	int value;
-	int ret = 0;
-
-	ret = kstrtoint(buf, 10, &value);
-	if (ret)
-		return ret;
-
-	if (value > MAX_ACM_INSTANCES)
-		return -EINVAL;
-
-	config->instances = value;
-
-	return size;
-}
-
-static DEVICE_ATTR(instances, S_IRUGO | S_IWUSR, acm_instances_show,
-						 acm_instances_store);
-static struct device_attribute *acm_function_attributes[] = {
-	&dev_attr_instances,
-	NULL
-};
-
-static struct ccg_usb_function acm_function = {
-	.name		= "acm",
-	.init		= acm_function_init,
-	.cleanup	= acm_function_cleanup,
-	.bind_config	= acm_function_bind_config,
-	.attributes	= acm_function_attributes,
-};
-
-struct rndis_function_config {
-	u8      ethaddr[ETH_ALEN];
-	u32     vendorID;
-	char	manufacturer[256];
-	/* "Wireless" RNDIS; auto-detected by Windows */
-	bool	wceis;
-};
-
-static int rndis_function_init(struct ccg_usb_function *f,
-			       struct usb_composite_dev *cdev)
-{
-	f->config = kzalloc(sizeof(struct rndis_function_config), GFP_KERNEL);
-	if (!f->config)
-		return -ENOMEM;
-	return 0;
-}
-
-static void rndis_function_cleanup(struct ccg_usb_function *f)
-{
-	kfree(f->config);
-	f->config = NULL;
-}
-
-static int rndis_function_bind_config(struct ccg_usb_function *f,
-				      struct usb_configuration *c)
-{
-	int ret;
-	struct rndis_function_config *rndis = f->config;
-
-	if (!rndis) {
-		pr_err("%s: rndis_pdata\n", __func__);
-		return -1;
-	}
-
-	pr_info("%s MAC: %pM\n", __func__, rndis->ethaddr);
-
-	ret = gether_setup_name(c->cdev->gadget, rndis->ethaddr, "rndis");
-	if (ret) {
-		pr_err("%s: gether_setup failed\n", __func__);
-		return ret;
-	}
-
-	if (rndis->wceis) {
-		/* "Wireless" RNDIS; auto-detected by Windows */
-		rndis_iad_descriptor.bFunctionClass =
-						USB_CLASS_WIRELESS_CONTROLLER;
-		rndis_iad_descriptor.bFunctionSubClass = 0x01;
-		rndis_iad_descriptor.bFunctionProtocol = 0x03;
-		rndis_control_intf.bInterfaceClass =
-						USB_CLASS_WIRELESS_CONTROLLER;
-		rndis_control_intf.bInterfaceSubClass =	 0x01;
-		rndis_control_intf.bInterfaceProtocol =	 0x03;
-	}
-
-	return rndis_bind_config_vendor(c, rndis->ethaddr, rndis->vendorID,
-					   rndis->manufacturer);
-}
-
-static void rndis_function_unbind_config(struct ccg_usb_function *f,
-						struct usb_configuration *c)
-{
-	gether_cleanup();
-}
-
-static ssize_t rndis_manufacturer_show(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct ccg_usb_function *f = dev_get_drvdata(dev);
-	struct rndis_function_config *config = f->config;
-	return sprintf(buf, "%s\n", config->manufacturer);
-}
-
-static ssize_t rndis_manufacturer_store(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t size)
-{
-	struct ccg_usb_function *f = dev_get_drvdata(dev);
-	struct rndis_function_config *config = f->config;
-
-	if (size >= sizeof(config->manufacturer))
-		return -EINVAL;
-	memcpy(config->manufacturer, buf, size);
-	config->manufacturer[size] = 0;
-
-	return size;
-}
-
-static DEVICE_ATTR(manufacturer, S_IRUGO | S_IWUSR, rndis_manufacturer_show,
-						    rndis_manufacturer_store);
-
-static ssize_t rndis_wceis_show(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct ccg_usb_function *f = dev_get_drvdata(dev);
-	struct rndis_function_config *config = f->config;
-	return sprintf(buf, "%d\n", config->wceis);
-}
-
-static ssize_t rndis_wceis_store(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t size)
-{
-	struct ccg_usb_function *f = dev_get_drvdata(dev);
-	struct rndis_function_config *config = f->config;
-	int value;
-	int ret;
-
-	ret = kstrtoint(buf, 10, &value);
-	if (ret)
-		return ret;
-
-	config->wceis = value;
-
-	return size;
-}
-
-static DEVICE_ATTR(wceis, S_IRUGO | S_IWUSR, rndis_wceis_show,
-					     rndis_wceis_store);
-
-static ssize_t rndis_ethaddr_show(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct ccg_usb_function *f = dev_get_drvdata(dev);
-	struct rndis_function_config *rndis = f->config;
-	return sprintf(buf, "%pM\n", rndis->ethaddr);
-}
-
-static ssize_t rndis_ethaddr_store(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t size)
-{
-	struct ccg_usb_function *f = dev_get_drvdata(dev);
-	struct rndis_function_config *rndis = f->config;
-	unsigned char tmp[6];
-
-	if (sscanf(buf, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
-		   tmp + 0, tmp + 1, tmp + 2, tmp + 3, tmp + 4, tmp + 5) !=
-	    ETH_ALEN)
-		return -EINVAL;
-
-	memcpy(rndis->ethaddr, tmp, ETH_ALEN);
-
-	return ETH_ALEN;
-
-}
-
-static DEVICE_ATTR(ethaddr, S_IRUGO | S_IWUSR, rndis_ethaddr_show,
-					       rndis_ethaddr_store);
-
-static ssize_t rndis_vendorID_show(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct ccg_usb_function *f = dev_get_drvdata(dev);
-	struct rndis_function_config *config = f->config;
-	return sprintf(buf, "%04x\n", config->vendorID);
-}
-
-static ssize_t rndis_vendorID_store(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t size)
-{
-	struct ccg_usb_function *f = dev_get_drvdata(dev);
-	struct rndis_function_config *config = f->config;
-	int value;
-	int ret;
-
-	ret = kstrtou32(buf, 16, &value);
-	if (ret)
-		return ret;
-
-	config->vendorID = value;
-
-	return size;
-}
-
-static DEVICE_ATTR(vendorID, S_IRUGO | S_IWUSR, rndis_vendorID_show,
-						rndis_vendorID_store);
-
-static struct device_attribute *rndis_function_attributes[] = {
-	&dev_attr_manufacturer,
-	&dev_attr_wceis,
-	&dev_attr_ethaddr,
-	&dev_attr_vendorID,
-	NULL
-};
-
-static struct ccg_usb_function rndis_function = {
-	.name		= "rndis",
-	.init		= rndis_function_init,
-	.cleanup	= rndis_function_cleanup,
-	.bind_config	= rndis_function_bind_config,
-	.unbind_config	= rndis_function_unbind_config,
-	.attributes	= rndis_function_attributes,
-};
-
-static int mass_storage_function_init(struct ccg_usb_function *f,
-					struct usb_composite_dev *cdev)
-{
-	struct fsg_config fsg;
-	struct fsg_common *common;
-	int err;
-
-	memset(&fsg, 0, sizeof(fsg));
-	fsg.nluns = 1;
-	fsg.luns[0].removable = 1;
-	fsg.vendor_name = iManufacturer;
-	fsg.product_name = iProduct;
-
-	common = fsg_common_init(NULL, cdev, &fsg);
-	if (IS_ERR(common))
-		return PTR_ERR(common);
-
-	err = sysfs_create_link(&f->dev->kobj,
-				&common->luns[0].dev.kobj,
-				"lun");
-	if (err) {
-		fsg_common_put(common);
-		return err;
-	}
-
-	f->config = common;
-	return 0;
-}
-
-static void mass_storage_function_cleanup(struct ccg_usb_function *f)
-{
-	fsg_common_put(f->config);
-	f->config = NULL;
-}
-
-static int mass_storage_function_bind_config(struct ccg_usb_function *f,
-					     struct usb_configuration *c)
-{
-	struct fsg_common *common = f->config;
-	return fsg_bind_config(c->cdev, c, common);
-}
-
-static struct ccg_usb_function mass_storage_function = {
-	.name		= "mass_storage",
-	.init		= mass_storage_function_init,
-	.cleanup	= mass_storage_function_cleanup,
-	.bind_config	= mass_storage_function_bind_config,
-};
-
-static struct ccg_usb_function *supported_functions[] = {
-	&functionfs_function,
-	&acm_function,
-	&rndis_function,
-	&mass_storage_function,
-	NULL
-};
-
-
-static int ccg_init_functions(struct ccg_usb_function **functions,
-				  struct usb_composite_dev *cdev)
-{
-	struct ccg_dev *dev = _ccg_dev;
-	struct ccg_usb_function *f;
-	struct device_attribute **attrs;
-	struct device_attribute *attr;
-	int err;
-	int index = 0;
-
-	for (; (f = *functions++); index++) {
-		f->dev_name = kasprintf(GFP_KERNEL, "f_%s", f->name);
-		if (!f->dev_name) {
-			pr_err("%s: Failed to alloc name %s", __func__,
-			       f->name);
-			err = -ENOMEM;
-			goto err_alloc;
-		}
-		f->dev = device_create(ccg_class, dev->dev,
-				MKDEV(0, index), f, f->dev_name);
-		if (IS_ERR(f->dev)) {
-			pr_err("%s: Failed to create dev %s", __func__,
-							f->dev_name);
-			err = PTR_ERR(f->dev);
-			f->dev = NULL;
-			goto err_create;
-		}
-
-		if (f->init) {
-			err = f->init(f, cdev);
-			if (err) {
-				pr_err("%s: Failed to init %s", __func__,
-								f->name);
-				goto err_out;
-			}
-		}
-
-		attrs = f->attributes;
-		if (attrs) {
-			while ((attr = *attrs++) && !err)
-				err = device_create_file(f->dev, attr);
-		}
-		if (err) {
-			pr_err("%s: Failed to create function %s attributes",
-					__func__, f->name);
-			goto err_uninit;
-		}
-	}
-	return 0;
-
-err_uninit:
-	if (f->cleanup)
-		f->cleanup(f);
-err_out:
-	device_destroy(ccg_class, f->dev->devt);
-	f->dev = NULL;
-err_create:
-	kfree(f->dev_name);
-err_alloc:
-	return err;
-}
-
-static void ccg_cleanup_functions(struct ccg_usb_function **functions)
-{
-	struct ccg_usb_function *f;
-
-	while (*functions) {
-		f = *functions++;
-
-		if (f->dev) {
-			if (f->cleanup)
-				f->cleanup(f);
-			device_destroy(ccg_class, f->dev->devt);
-			kfree(f->dev_name);
-		}
-	}
-}
-
-static int ccg_bind_enabled_functions(struct ccg_dev *dev,
-				      struct usb_configuration *c)
-{
-	struct ccg_usb_function *f;
-	int ret;
-
-	list_for_each_entry(f, &dev->enabled_functions, enabled_list) {
-		ret = f->bind_config(f, c);
-		if (ret) {
-			pr_err("%s: %s failed", __func__, f->name);
-			return ret;
-		}
-	}
-	return 0;
-}
-
-static void ccg_unbind_enabled_functions(struct ccg_dev *dev,
-					 struct usb_configuration *c)
-{
-	struct ccg_usb_function *f;
-
-	list_for_each_entry(f, &dev->enabled_functions, enabled_list)
-		if (f->unbind_config)
-			f->unbind_config(f, c);
-}
-
-static int ccg_enable_function(struct ccg_dev *dev, char *name)
-{
-	struct ccg_usb_function **functions = dev->functions;
-	struct ccg_usb_function *f;
-	while ((f = *functions++)) {
-		if (!strcmp(name, f->name)) {
-			list_add_tail(&f->enabled_list,
-						&dev->enabled_functions);
-			return 0;
-		}
-	}
-	return -EINVAL;
-}
-
-/*-------------------------------------------------------------------------*/
-/* /sys/class/ccg_usb/ccg%d/ interface */
-
-static ssize_t
-functions_show(struct device *pdev, struct device_attribute *attr, char *buf)
-{
-	struct ccg_dev *dev = dev_get_drvdata(pdev);
-	struct ccg_usb_function *f;
-	char *buff = buf;
-	int i;
-
-	mutex_lock(&dev->mutex);
-
-	list_for_each_entry(f, &dev->enabled_functions, enabled_list)
-		buff += sprintf(buff, "%s,", f->name);
-	for (i = 0; i < dev->max_func_num; i++)
-		if (dev->ffs_tab[i].used)
-			buff += sprintf(buff, "%s", dev->ffs_tab[i].name);
-
-	mutex_unlock(&dev->mutex);
-
-	if (buff != buf)
-		*(buff-1) = '\n';
-	return buff - buf;
-}
-
-static ss