1 files changed, 470 insertions, 200 deletions

diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index 8df4b76465a..257876ea03a 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -40,6 +40,7 @@
 #include <linux/signal.h>
 #include <linux/poll.h>
 #include <linux/module.h>
+#include <linux/string.h>
 #include <linux/usb.h>
 #include <linux/usbdevice_fs.h>
 #include <linux/usb/hcd.h>	/* for usbcore internals */
@@ -47,19 +48,21 @@
 #include <linux/notifier.h>
 #include <linux/security.h>
 #include <linux/user_namespace.h>
-#include <asm/uaccess.h>
+#include <linux/scatterlist.h>
+#include <linux/uaccess.h>
 #include <asm/byteorder.h>
 #include <linux/moduleparam.h>
 
 #include "usb.h"
 
 #define USB_MAXBUS			64
-#define USB_DEVICE_MAX			USB_MAXBUS * 128
+#define USB_DEVICE_MAX			(USB_MAXBUS * 128)
+#define USB_SG_SIZE			16384 /* split-size for large txs */
 
 /* Mutual exclusion for removal, open, and release */
 DEFINE_MUTEX(usbfs_mutex);
 
-struct dev_state {
+struct usb_dev_state {
 	struct list_head list;      /* state list */
 	struct usb_device *dev;
 	struct file *file;
@@ -78,7 +81,7 @@ struct dev_state {
 
 struct async {
 	struct list_head asynclist;
-	struct dev_state *ps;
+	struct usb_dev_state *ps;
 	struct pid *pid;
 	const struct cred *cred;
 	unsigned int signr;
@@ -115,7 +118,7 @@ module_param(usbfs_memory_mb, uint, 0644);
 MODULE_PARM_DESC(usbfs_memory_mb,
 		"maximum MB allowed for usbfs buffers (0 = no limit)");
 
-/* Hard limit, necessary to avoid aithmetic overflow */
+/* Hard limit, necessary to avoid arithmetic overflow */
 #define USBFS_XFER_MAX		(UINT_MAX / 2 - 1000000)
 
 static atomic_t usbfs_memory_usage;	/* Total memory currently allocated */
@@ -148,7 +151,7 @@ static void usbfs_decrease_memory_usage(unsigned amount)
 	atomic_sub(amount, &usbfs_memory_usage);
 }
 
-static int connected(struct dev_state *ps)
+static int connected(struct usb_dev_state *ps)
 {
 	return (!list_empty(&ps->list) &&
 			ps->dev->state != USB_STATE_NOTATTACHED);
@@ -158,7 +161,7 @@ static loff_t usbdev_lseek(struct file *file, loff_t offset, int orig)
 {
 	loff_t ret;
 
-	mutex_lock(&file->f_dentry->d_inode->i_mutex);
+	mutex_lock(&file_inode(file)->i_mutex);
 
 	switch (orig) {
 	case 0:
@@ -174,14 +177,14 @@ static loff_t usbdev_lseek(struct file *file, loff_t offset, int orig)
 		ret = -EINVAL;
 	}
 
-	mutex_unlock(&file->f_dentry->d_inode->i_mutex);
+	mutex_unlock(&file_inode(file)->i_mutex);
 	return ret;
 }
 
 static ssize_t usbdev_read(struct file *file, char __user *buf, size_t nbytes,
 			   loff_t *ppos)
 {
-	struct dev_state *ps = file->private_data;
+	struct usb_dev_state *ps = file->private_data;
 	struct usb_device *dev = ps->dev;
 	ssize_t ret = 0;
 	unsigned len;
@@ -285,9 +288,16 @@ static struct async *alloc_async(unsigned int numisoframes)
 
 static void free_async(struct async *as)
 {
+	int i;
+
 	put_pid(as->pid);
 	if (as->cred)
 		put_cred(as->cred);
+	for (i = 0; i < as->urb->num_sgs; i++) {
+		if (sg_page(&as->urb->sg[i]))
+			kfree(sg_virt(&as->urb->sg[i]));
+	}
+	kfree(as->urb->sg);
 	kfree(as->urb->transfer_buffer);
 	kfree(as->urb->setup_packet);
 	usb_free_urb(as->urb);
@@ -297,7 +307,7 @@ static void free_async(struct async *as)
 
 static void async_newpending(struct async *as)
 {
-	struct dev_state *ps = as->ps;
+	struct usb_dev_state *ps = as->ps;
 	unsigned long flags;
 
 	spin_lock_irqsave(&ps->lock, flags);
@@ -307,7 +317,7 @@ static void async_newpending(struct async *as)
 
 static void async_removepending(struct async *as)
 {
-	struct dev_state *ps = as->ps;
+	struct usb_dev_state *ps = as->ps;
 	unsigned long flags;
 
 	spin_lock_irqsave(&ps->lock, flags);
@@ -315,7 +325,7 @@ static void async_removepending(struct async *as)
 	spin_unlock_irqrestore(&ps->lock, flags);
 }
 
-static struct async *async_getcompleted(struct dev_state *ps)
+static struct async *async_getcompleted(struct usb_dev_state *ps)
 {
 	unsigned long flags;
 	struct async *as = NULL;
@@ -330,20 +340,17 @@ static struct async *async_getcompleted(struct dev_state *ps)
 	return as;
 }
 
-static struct async *async_getpending(struct dev_state *ps,
+static struct async *async_getpending(struct usb_dev_state *ps,
 					     void __user *userurb)
 {
-	unsigned long flags;
 	struct async *as;
 
-	spin_lock_irqsave(&ps->lock, flags);
 	list_for_each_entry(as, &ps->async_pending, asynclist)
 		if (as->userurb == userurb) {
 			list_del_init(&as->asynclist);
-			spin_unlock_irqrestore(&ps->lock, flags);
 			return as;
 		}
-	spin_unlock_irqrestore(&ps->lock, flags);
+
 	return NULL;
 }
 
@@ -391,13 +398,61 @@ static void snoop_urb(struct usb_device *udev,
 	}
 }
 
+static void snoop_urb_data(struct urb *urb, unsigned len)
+{
+	int i, size;
+
+	if (!usbfs_snoop)
+		return;
+
+	if (urb->num_sgs == 0) {
+		print_hex_dump(KERN_DEBUG, "data: ", DUMP_PREFIX_NONE, 32, 1,
+			urb->transfer_buffer, len, 1);
+		return;
+	}
+
+	for (i = 0; i < urb->num_sgs && len; i++) {
+		size = (len > USB_SG_SIZE) ? USB_SG_SIZE : len;
+		print_hex_dump(KERN_DEBUG, "data: ", DUMP_PREFIX_NONE, 32, 1,
+			sg_virt(&urb->sg[i]), size, 1);
+		len -= size;
+	}
+}
+
+static int copy_urb_data_to_user(u8 __user *userbuffer, struct urb *urb)
+{
+	unsigned i, len, size;
+
+	if (urb->number_of_packets > 0)		/* Isochronous */
+		len = urb->transfer_buffer_length;
+	else					/* Non-Isoc */
+		len = urb->actual_length;
+
+	if (urb->num_sgs == 0) {
+		if (copy_to_user(userbuffer, urb->transfer_buffer, len))
+			return -EFAULT;
+		return 0;
+	}
+
+	for (i = 0; i < urb->num_sgs && len; i++) {
+		size = (len > USB_SG_SIZE) ? USB_SG_SIZE : len;
+		if (copy_to_user(userbuffer, sg_virt(&urb->sg[i]), size))
+			return -EFAULT;
+		userbuffer += size;
+		len -= size;
+	}
+
+	return 0;
+}
+
 #define AS_CONTINUATION	1
 #define AS_UNLINK	2
 
-static void cancel_bulk_urbs(struct dev_state *ps, unsigned bulk_addr)
+static void cancel_bulk_urbs(struct usb_dev_state *ps, unsigned bulk_addr)
 __releases(ps->lock)
 __acquires(ps->lock)
 {
+	struct urb *urb;
 	struct async *as;
 
 	/* Mark all the pending URBs that match bulk_addr, up to but not
@@ -420,8 +475,11 @@ __acquires(ps->lock)
 	list_for_each_entry(as, &ps->async_pending, asynclist) {
 		if (as->bulk_status == AS_UNLINK) {
 			as->bulk_status = 0;		/* Only once */
+			urb = as->urb;
+			usb_get_urb(urb);
 			spin_unlock(&ps->lock);		/* Allow completions */
-			usb_unlink_urb(as->urb);
+			usb_unlink_urb(urb);
+			usb_put_urb(urb);
 			spin_lock(&ps->lock);
 			goto rescan;
 		}
@@ -431,7 +489,7 @@ __acquires(ps->lock)
 static void async_completed(struct urb *urb)
 {
 	struct async *as = urb->context;
-	struct dev_state *ps = as->ps;
+	struct usb_dev_state *ps = as->ps;
 	struct siginfo sinfo;
 	struct pid *pid = NULL;
 	u32 secid = 0;
@@ -453,9 +511,10 @@ static void async_completed(struct urb *urb)
 	}
 	snoop(&urb->dev->dev, "urb complete\n");
 	snoop_urb(urb->dev, as->userurb, urb->pipe, urb->actual_length,
-			as->status, COMPLETE,
-			((urb->transfer_flags & URB_DIR_MASK) == USB_DIR_OUT) ?
-				NULL : urb->transfer_buffer, urb->actual_length);
+			as->status, COMPLETE, NULL, 0);
+	if ((urb->transfer_flags & URB_DIR_MASK) == USB_DIR_IN)
+		snoop_urb_data(urb, urb->actual_length);
+
 	if (as->status < 0 && as->bulk_addr && as->status != -ECONNRESET &&
 			as->status != -ENOENT)
 		cancel_bulk_urbs(ps, as->bulk_addr);
@@ -470,8 +529,9 @@ static void async_completed(struct urb *urb)
 	wake_up(&ps->wait);
 }
 
-static void destroy_async(struct dev_state *ps, struct list_head *list)
+static void destroy_async(struct usb_dev_state *ps, struct list_head *list)
 {
+	struct urb *urb;
 	struct async *as;
 	unsigned long flags;
 
@@ -479,16 +539,19 @@ static void destroy_async(struct dev_state *ps, struct list_head *list)
 	while (!list_empty(list)) {
 		as = list_entry(list->next, struct async, asynclist);
 		list_del_init(&as->asynclist);
+		urb = as->urb;
+		usb_get_urb(urb);
 
 		/* drop the spinlock so the completion handler can run */
 		spin_unlock_irqrestore(&ps->lock, flags);
-		usb_kill_urb(as->urb);
+		usb_kill_urb(urb);
+		usb_put_urb(urb);
 		spin_lock_irqsave(&ps->lock, flags);
 	}
 	spin_unlock_irqrestore(&ps->lock, flags);
 }
 
-static void destroy_async_on_interface(struct dev_state *ps,
+static void destroy_async_on_interface(struct usb_dev_state *ps,
 				       unsigned int ifnum)
 {
 	struct list_head *p, *q, hitlist;
@@ -503,7 +566,7 @@ static void destroy_async_on_interface(struct dev_state *ps,
 	destroy_async(ps, &hitlist);
 }
 
-static void destroy_all_async(struct dev_state *ps)
+static void destroy_all_async(struct usb_dev_state *ps)
 {
 	destroy_async(ps, &ps->async_pending);
 }
@@ -522,7 +585,7 @@ static int driver_probe(struct usb_interface *intf,
 
 static void driver_disconnect(struct usb_interface *intf)
 {
-	struct dev_state *ps = usb_get_intfdata(intf);
+	struct usb_dev_state *ps = usb_get_intfdata(intf);
 	unsigned int ifnum = intf->altsetting->desc.bInterfaceNumber;
 
 	if (!ps)
@@ -565,7 +628,7 @@ struct usb_driver usbfs_driver = {
 	.resume =	driver_resume,
 };
 
-static int claimintf(struct dev_state *ps, unsigned int ifnum)
+static int claimintf(struct usb_dev_state *ps, unsigned int ifnum)
 {
 	struct usb_device *dev = ps->dev;
 	struct usb_interface *intf;
@@ -587,7 +650,7 @@ static int claimintf(struct dev_state *ps, unsigned int ifnum)
 	return err;
 }
 
-static int releaseintf(struct dev_state *ps, unsigned int ifnum)
+static int releaseintf(struct usb_dev_state *ps, unsigned int ifnum)
 {
 	struct usb_device *dev;
 	struct usb_interface *intf;
@@ -607,7 +670,7 @@ static int releaseintf(struct dev_state *ps, unsigned int ifnum)
 	return err;
 }
 
-static int checkintf(struct dev_state *ps, unsigned int ifnum)
+static int checkintf(struct usb_dev_state *ps, unsigned int ifnum)
 {
 	if (ps->dev->state != USB_STATE_CONFIGURED)
 		return -EHOSTUNREACH;
@@ -647,7 +710,7 @@ static int findintfep(struct usb_device *dev, unsigned int ep)
 	return -ENOENT;
 }
 
-static int check_ctrlrecip(struct dev_state *ps, unsigned int requesttype,
+static int check_ctrlrecip(struct usb_dev_state *ps, unsigned int requesttype,
 			   unsigned int request, unsigned int index)
 {
 	int ret = 0;
@@ -662,21 +725,39 @@ static int check_ctrlrecip(struct dev_state *ps, unsigned int requesttype,
 
 	/*
 	 * check for the special corner case 'get_device_id' in the printer
-	 * class specification, where wIndex is (interface << 8 | altsetting)
-	 * instead of just interface
+	 * class specification, which we always want to allow as it is used
+	 * to query things like ink level, etc.
 	 */
 	if (requesttype == 0xa1 && request == 0) {
 		alt_setting = usb_find_alt_setting(ps->dev->actconfig,
 						   index >> 8, index & 0xff);
 		if (alt_setting
 		 && alt_setting->desc.bInterfaceClass == USB_CLASS_PRINTER)
-			index >>= 8;
+			return 0;
 	}
 
 	index &= 0xff;
 	switch (requesttype & USB_RECIP_MASK) {
 	case USB_RECIP_ENDPOINT:
+		if ((index & ~USB_DIR_IN) == 0)
+			return 0;
 		ret = findintfep(ps->dev, index);
+		if (ret < 0) {
+			/*
+			 * Some not fully compliant Win apps seem to get
+			 * index wrong and have the endpoint number here
+			 * rather than the endpoint address (with the
+			 * correct direction). Win does let this through,
+			 * so we'll not reject it here but leave it to
+			 * the device to not break KVM. But we warn.
+			 */
+			ret = findintfep(ps->dev, index ^ 0x80);
+			if (ret >= 0)
+				dev_info(&ps->dev->dev,
+					"%s: process %i (%s) requesting ep %02x but needs %02x\n",
+					__func__, task_pid_nr(current),
+					current->comm, index, index ^ 0x80);
+		}
 		if (ret >= 0)
 			ret = checkintf(ps, ret);
 		break;
@@ -688,6 +769,88 @@ static int check_ctrlrecip(struct dev_state *ps, unsigned int requesttype,
 	return ret;
 }
 
+static struct usb_host_endpoint *ep_to_host_endpoint(struct usb_device *dev,
+						     unsigned char ep)
+{
+	if (ep & USB_ENDPOINT_DIR_MASK)
+		return dev->ep_in[ep & USB_ENDPOINT_NUMBER_MASK];
+	else
+		return dev->ep_out[ep & USB_ENDPOINT_NUMBER_MASK];
+}
+
+static int parse_usbdevfs_streams(struct usb_dev_state *ps,
+				  struct usbdevfs_streams __user *streams,
+				  unsigned int *num_streams_ret,
+				  unsigned int *num_eps_ret,
+				  struct usb_host_endpoint ***eps_ret,
+				  struct usb_interface **intf_ret)
+{
+	unsigned int i, num_streams, num_eps;
+	struct usb_host_endpoint **eps;
+	struct usb_interface *intf = NULL;
+	unsigned char ep;
+	int ifnum, ret;
+
+	if (get_user(num_streams, &streams->num_streams) ||
+	    get_user(num_eps, &streams->num_eps))
+		return -EFAULT;
+
+	if (num_eps < 1 || num_eps > USB_MAXENDPOINTS)
+		return -EINVAL;
+
+	/* The XHCI controller allows max 2 ^ 16 streams */
+	if (num_streams_ret && (num_streams < 2 || num_streams > 65536))
+		return -EINVAL;
+
+	eps = kmalloc(num_eps * sizeof(*eps), GFP_KERNEL);
+	if (!eps)
+		return -ENOMEM;
+
+	for (i = 0; i < num_eps; i++) {
+		if (get_user(ep, &streams->eps[i])) {
+			ret = -EFAULT;
+			goto error;
+		}
+		eps[i] = ep_to_host_endpoint(ps->dev, ep);
+		if (!eps[i]) {
+			ret = -EINVAL;
+			goto error;
+		}
+
+		/* usb_alloc/free_streams operate on an usb_interface */
+		ifnum = findintfep(ps->dev, ep);
+		if (ifnum < 0) {
+			ret = ifnum;
+			goto error;
+		}
+
+		if (i == 0) {
+			ret = checkintf(ps, ifnum);
+			if (ret < 0)
+				goto error;
+			intf = usb_ifnum_to_if(ps->dev, ifnum);
+		} else {
+			/* Verify all eps belong to the same interface */
+			if (ifnum != intf->altsetting->desc.bInterfaceNumber) {
+				ret = -EINVAL;
+				goto error;
+			}
+		}
+	}
+
+	if (num_streams_ret)
+		*num_streams_ret = num_streams;
+	*num_eps_ret = num_eps;
+	*eps_ret = eps;
+	*intf_ret = intf;
+
+	return 0;
+
+error:
+	kfree(eps);
+	return ret;
+}
+
 static int match_devt(struct device *dev, void *data)
 {
 	return dev->devt == (dev_t) (unsigned long) data;
@@ -710,11 +873,11 @@ static struct usb_device *usbdev_lookup_by_devt(dev_t devt)
 static int usbdev_open(struct inode *inode, struct file *file)
 {
 	struct usb_device *dev = NULL;
-	struct dev_state *ps;
+	struct usb_dev_state *ps;
 	int ret;
 
 	ret = -ENOMEM;
-	ps = kmalloc(sizeof(struct dev_state), GFP_KERNEL);
+	ps = kmalloc(sizeof(struct usb_dev_state), GFP_KERNEL);
 	if (!ps)
 		goto out_free_ps;
 
@@ -727,17 +890,6 @@ static int usbdev_open(struct inode *inode, struct file *file)
 	if (imajor(inode) == USB_DEVICE_MAJOR)
 		dev = usbdev_lookup_by_devt(inode->i_rdev);
 
-#ifdef CONFIG_USB_DEVICEFS
-	/* procfs file */
-	if (!dev) {
-		dev = inode->i_private;
-		if (dev && dev->usbfs_dentry &&
-					dev->usbfs_dentry->d_inode == inode)
-			usb_get_dev(dev);
-		else
-			dev = NULL;
-	}
-#endif
 	mutex_unlock(&usbfs_mutex);
 
 	if (!dev)
@@ -782,7 +934,7 @@ static int usbdev_open(struct inode *inode, struct file *file)
 
 static int usbdev_release(struct inode *inode, struct file *file)
 {
-	struct dev_state *ps = file->private_data;
+	struct usb_dev_state *ps = file->private_data;
 	struct usb_device *dev = ps->dev;
 	unsigned int ifnum;
 	struct async *as;
@@ -813,7 +965,7 @@ static int usbdev_release(struct inode *inode, struct file *file)
 	return 0;
 }
 
-static int proc_control(struct dev_state *ps, void __user *arg)
+static int proc_control(struct usb_dev_state *ps, void __user *arg)
 {
 	struct usb_device *dev = ps->dev;
 	struct usbdevfs_ctrltransfer ctrl;
@@ -844,10 +996,8 @@ static int proc_control(struct dev_state *ps, void __user *arg)
 	snoop(&dev->dev, "control urb: bRequestType=%02x "
 		"bRequest=%02x wValue=%04x "
 		"wIndex=%04x wLength=%04x\n",
-		ctrl.bRequestType, ctrl.bRequest,
-		__le16_to_cpup(&ctrl.wValue),
-		__le16_to_cpup(&ctrl.wIndex),
-		__le16_to_cpup(&ctrl.wLength));
+		ctrl.bRequestType, ctrl.bRequest, ctrl.wValue,
+		ctrl.wIndex, ctrl.wLength);
 	if (ctrl.bRequestType & 0x80) {
 		if (ctrl.wLength && !access_ok(VERIFY_WRITE, ctrl.data,
 					       ctrl.wLength)) {
@@ -902,7 +1052,7 @@ static int proc_control(struct dev_state *ps, void __user *arg)
 	return ret;
 }
 
-static int proc_bulk(struct dev_state *ps, void __user *arg)
+static int proc_bulk(struct usb_dev_state *ps, void __user *arg)
 {
 	struct usb_device *dev = ps->dev;
 	struct usbdevfs_bulktransfer bulk;
@@ -975,7 +1125,21 @@ static int proc_bulk(struct dev_state *ps, void __user *arg)
 	return ret;
 }
 
-static int proc_resetep(struct dev_state *ps, void __user *arg)
+static void check_reset_of_active_ep(struct usb_device *udev,
+		unsigned int epnum, char *ioctl_name)
+{
+	struct usb_host_endpoint **eps;
+	struct usb_host_endpoint *ep;
+
+	eps = (epnum & USB_DIR_IN) ? udev->ep_in : udev->ep_out;
+	ep = eps[epnum & 0x0f];
+	if (ep && !list_empty(&ep->urb_list))
+		dev_warn(&udev->dev, "Process %d (%s) called USBDEVFS_%s for active endpoint 0x%02x\n",
+				task_pid_nr(current), current->comm,
+				ioctl_name, epnum);
+}
+
+static int proc_resetep(struct usb_dev_state *ps, void __user *arg)
 {
 	unsigned int ep;
 	int ret;
@@ -988,11 +1152,12 @@ static int proc_resetep(struct dev_state *ps, void __user *arg)
 	ret = checkintf(ps, ret);
 	if (ret)
 		return ret;
+	check_reset_of_active_ep(ps->dev, ep, "RESETEP");
 	usb_reset_endpoint(ps->dev, ep);
 	return 0;
 }
 
-static int proc_clearhalt(struct dev_state *ps, void __user *arg)
+static int proc_clearhalt(struct usb_dev_state *ps, void __user *arg)
 {
 	unsigned int ep;
 	int pipe;
@@ -1006,6 +1171,7 @@ static int proc_clearhalt(struct dev_state *ps, void __user *arg)
 	ret = checkintf(ps, ret);
 	if (ret)
 		return ret;
+	check_reset_of_active_ep(ps->dev, ep, "CLEAR_HALT");
 	if (ep & USB_DIR_IN)
 		pipe = usb_rcvbulkpipe(ps->dev, ep & 0x7f);
 	else
@@ -1014,7 +1180,7 @@ static int proc_clearhalt(struct dev_state *ps, void __user *arg)
 	return usb_clear_halt(ps->dev, pipe);
 }
 
-static int proc_getdriver(struct dev_state *ps, void __user *arg)
+static int proc_getdriver(struct usb_dev_state *ps, void __user *arg)
 {
 	struct usbdevfs_getdriver gd;
 	struct usb_interface *intf;
@@ -1026,14 +1192,14 @@ static int proc_getdriver(struct dev_state *ps, void __user *arg)
 	if (!intf || !intf->dev.driver)
 		ret = -ENODATA;
 	else {
-		strncpy(gd.driver, intf->dev.driver->name,
+		strlcpy(gd.driver, intf->dev.driver->name,
 				sizeof(gd.driver));
 		ret = (copy_to_user(arg, &gd, sizeof(gd)) ? -EFAULT : 0);
 	}
 	return ret;
 }
 
-static int proc_connectinfo(struct dev_state *ps, void __user *arg)
+static int proc_connectinfo(struct usb_dev_state *ps, void __user *arg)
 {
 	struct usbdevfs_connectinfo ci = {
 		.devnum = ps->dev->devnum,
@@ -1045,12 +1211,12 @@ static int proc_connectinfo(struct dev_state *ps, void __user *arg)
 	return 0;
 }
 
-static int proc_resetdevice(struct dev_state *ps)
+static int proc_resetdevice(struct usb_dev_state *ps)
 {
 	return usb_reset_device(ps->dev);
 }
 
-static int proc_setintf(struct dev_state *ps, void __user *arg)
+static int proc_setintf(struct usb_dev_state *ps, void __user *arg)
 {
 	struct usbdevfs_setinterface setintf;
 	int ret;
@@ -1059,11 +1225,14 @@ static int proc_setintf(struct dev_state *ps, void __user *arg)
 		return -EFAULT;
 	if ((ret = checkintf(ps, setintf.interface)))
 		return ret;
+
+	destroy_async_on_interface(ps, setintf.interface);
+
 	return usb_set_interface(ps->dev, setintf.interface,
 			setintf.altsetting);
 }
 
-static int proc_setconfig(struct dev_state *ps, void __user *arg)
+static int proc_setconfig(struct usb_dev_state *ps, void __user *arg)
 {
 	int u;
 	int status = 0;
@@ -1111,7 +1280,7 @@ static int proc_setconfig(struct dev_state *ps, void __user *arg)
 	return status;
 }
 
-static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
+static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb,
 			struct usbdevfs_iso_packet_desc __user *iso_frame_desc,
 			void __user *arg)
 {
@@ -1120,8 +1289,10 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
 	struct async *as = NULL;
 	struct usb_ctrlrequest *dr = NULL;
 	unsigned int u, totlen, isofrmlen;
-	int ret, ifnum = -1;
-	int is_in;
+	int i, ret, is_in, num_sgs = 0, ifnum = -1;
+	int number_of_packets = 0;
+	unsigned int stream_id = 0;
+	void *buf;
 
 	if (uurb->flags & ~(USBDEVFS_URB_ISO_ASAP |
 				USBDEVFS_URB_SHORT_NOT_OK |
@@ -1141,15 +1312,10 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
 		if (ret)
 			return ret;
 	}
-	if ((uurb->endpoint & USB_ENDPOINT_DIR_MASK) != 0) {
-		is_in = 1;
-		ep = ps->dev->ep_in[uurb->endpoint & USB_ENDPOINT_NUMBER_MASK];
-	} else {
-		is_in = 0;
-		ep = ps->dev->ep_out[uurb->endpoint & USB_ENDPOINT_NUMBER_MASK];
-	}
+	ep = ep_to_host_endpoint(ps->dev, uurb->endpoint);
 	if (!ep)
 		return -ENOENT;
+	is_in = (uurb->endpoint & USB_ENDPOINT_DIR_MASK) != 0;
 
 	u = 0;
 	switch(uurb->type) {
@@ -1174,7 +1340,6 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
 				      le16_to_cpup(&dr->wIndex));
 		if (ret)
 			goto error;
-		uurb->number_of_packets = 0;
 		uurb->buffer_length = le16_to_cpup(&dr->wLength);
 		uurb->buffer += 8;
 		if ((dr->bRequestType & USB_DIR_IN) && uurb->buffer_length) {
@@ -1204,14 +1369,17 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
 			uurb->type = USBDEVFS_URB_TYPE_INTERRUPT;
 			goto interrupt_urb;
 		}
-		uurb->number_of_packets = 0;
+		num_sgs = DIV_ROUND_UP(uurb->buffer_length, USB_SG_SIZE);
+		if (num_sgs == 1 || num_sgs > ps->dev->bus->sg_tablesize)
+			num_sgs = 0;
+		if (ep->streams)
+			stream_id = uurb->stream_id;
 		break;
 
 	case USBDEVFS_URB_TYPE_INTERRUPT:
 		if (!usb_endpoint_xfer_int(&ep->desc))
 			return -EINVAL;
  interrupt_urb:
-		uurb->number_of_packets = 0;
 		break;
 
 	case USBDEVFS_URB_TYPE_ISO:
@@ -1221,18 +1389,23 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
 			return -EINVAL;
 		if (!usb_endpoint_xfer_isoc(&ep->desc))
 			return -EINVAL;
+		number_of_packets = uurb->number_of_packets;
 		isofrmlen = sizeof(struct usbdevfs_iso_packet_desc) *
-				   uurb->number_of_packets;
+				   number_of_packets;
 		if (!(isopkt = kmalloc(isofrmlen, GFP_KERNEL)))
 			return -ENOMEM;
 		if (copy_from_user(isopkt, iso_frame_desc, isofrmlen)) {
 			ret = -EFAULT;
 			goto error;
 		}
-		for (totlen = u = 0; u < uurb->number_of_packets; u++) {
-			/* arbitrary limit,
-			 * sufficient for USB 2.0 high-bandwidth iso */
-			if (isopkt[u].length > 8192) {
+		for (totlen = u = 0; u < number_of_packets; u++) {
+			/*
+			 * arbitrary limit need for USB 3.0
+			 * bMaxBurst (0~15 allowed, 1~16 packets)
+			 * bmAttributes (bit 1:0, mult 0~2, 1~3 packets)
+			 * sizemax: 1024 * 16 * 3 = 49152
+			 */
+			if (isopkt[u].length > 49152) {
 				ret = -EINVAL;
 				goto error;
 			}
@@ -1256,31 +1429,73 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
 		ret = -EFAULT;
 		goto error;
 	}
-	as = alloc_async(uurb->number_of_packets);
+	as = alloc_async(number_of_packets);
 	if (!as) {
 		ret = -ENOMEM;
 		goto error;
 	}
-	u += sizeof(struct async) + sizeof(struct urb) + uurb->buffer_length;
+
+	u += sizeof(struct async) + sizeof(struct urb) + uurb->buffer_length +
+	     num_sgs * sizeof(struct scatterlist);
 	ret = usbfs_increase_memory_usage(u);
 	if (ret)
 		goto error;
 	as->mem_usage = u;
 
-	if (uurb->buffer_length > 0) {
+	if (num_sgs) {
+		as->urb->sg = kmalloc(num_sgs * sizeof(struct scatterlist),
+				      GFP_KERNEL);
+		if (!as->urb->sg) {
+			ret = -ENOMEM;
+			goto error;
+		}
+		as->urb->num_sgs = num_sgs;
+		sg_init_table(as->urb->sg, as->urb->num_sgs);
+
+		totlen = uurb->buffer_length;
+		for (i = 0; i < as->urb->num_sgs; i++) {
+			u = (totlen > USB_SG_SIZE) ? USB_SG_SIZE : totlen;
+			buf = kmalloc(u, GFP_KERNEL);
+			if (!buf) {
+				ret = -ENOMEM;
+				goto error;
+			}
+			sg_set_buf(&as->urb->sg[i], buf, u);
+
+			if (!is_in) {
+				if (copy_from_user(buf, uurb->buffer, u)) {
+					ret = -EFAULT;
+					goto error;
+				}
+				uurb->buffer += u;
+			}
+			totlen -= u;
+		}
+	} else if (uurb->buffer_length > 0) {
 		as->urb->transfer_buffer = kmalloc(uurb->buffer_length,
 				GFP_KERNEL);
 		if (!as->urb->transfer_buffer) {
 			ret = -ENOMEM;
 			goto error;
 		}
-		/* Isochronous input data may end up being discontiguous
-		 * if some of the packets are short.  Clear the buffer so
-		 * that the gaps don't leak kernel data to userspace.
-		 */
-		if (is_in && uurb->type == USBDEVFS_URB_TYPE_ISO)
+
+		if (!is_in) {
+			if (copy_from_user(as->urb->transfer_buffer,
+					   uurb->buffer,
+					   uurb->buffer_length)) {
+				ret = -EFAULT;
+				goto error;
+			}
+		} else if (uurb->type == USBDEVFS_URB_TYPE_ISO) {
+			/*
+			 * Isochronous input data may end up being
+			 * discontiguous if some of the packets are short.
+			 * Clear the buffer so that the gaps don't leak
+			 * kernel data to userspace.
+			 */
 			memset(as->urb->transfer_buffer, 0,
 					uurb->buffer_length);
+		}
 	}
 	as->urb->dev = ps->dev;
 	as->urb->pipe = (uurb->type << 30) |
@@ -1308,7 +1523,8 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
 	as->urb->setup_packet = (unsigned char *)dr;
 	dr = NULL;
 	as->urb->start_frame = uurb->start_frame;
-	as->urb->number_of_packets = uurb->number_of_packets;
+	as->urb->number_of_packets = number_of_packets;
+	as->urb->stream_id = stream_id;
 	if (uurb->type == USBDEVFS_URB_TYPE_ISO ||
 			ps->dev->speed == USB_SPEED_HIGH)
 		as->urb->interval = 1 << min(15, ep->desc.bInterval - 1);
@@ -1316,7 +1532,7 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
 		as->urb->interval = ep->desc.bInterval;
 	as->urb->context = as;
 	as->urb->complete = async_completed;
-	for (totlen = u = 0; u < uurb->number_of_packets; u++) {
+	for (totlen = u = 0; u < number_of_packets; u++) {
 		as->urb->iso_frame_desc[u].offset = totlen;
 		as->urb->iso_frame_desc[u].length = isopkt[u].length;
 		totlen += isopkt[u].length;
@@ -1334,17 +1550,12 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
 	as->pid = get_pid(task_pid(current));
 	as->cred = get_current_cred();
 	security_task_getsecid(current, &as->secid);
-	if (!is_in && uurb->buffer_length > 0) {
-		if (copy_from_user(as->urb->transfer_buffer, uurb->buffer,
-				uurb->buffer_length)) {
-			ret = -EFAULT;
-			goto error;
-		}
-	}
 	snoop_urb(ps->dev, as->userurb, as->urb->pipe,
 			as->urb->transfer_buffer_length, 0, SUBMIT,
-			is_in ? NULL : as->urb->transfer_buffer,
-				uurb->buffer_length);
+			NULL, 0);
+	if (!is_in)
+		snoop_urb_data(as->urb, as->urb->transfer_buffer_length);
+
 	async_newpending(as);
 
 	if (usb_endpoint_xfer_bulk(&ep->desc)) {
@@ -1396,7 +1607,7 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
 	return ret;
 }
 
-static int proc_submiturb(struct dev_state *ps, void __user *arg)
+static int proc_submiturb(struct usb_dev_state *ps, void __user *arg)
 {
 	struct usbdevfs_urb uurb;
 
@@ -1408,14 +1619,26 @@ static int proc_submiturb(struct dev_state *ps, void __user *arg)
 			arg);
 }
 
-static int proc_unlinkurb(struct dev_state *ps, void __user *arg)
+static int proc_unlinkurb(struct usb_dev_state *ps, void __user *arg)
 {
+	struct urb *urb;
 	struct async *as;
+	unsigned long flags;
 
+	spin_lock_irqsave(&ps->lock, flags);
 	as = async_getpending(ps, arg);
-	if (!as)
+	if (!as) {
+		spin_unlock_irqrestore(&ps->lock, flags);
 		return -EINVAL;
-	usb_kill_urb(as->urb);
+	}
+
+	urb = as->urb;
+	usb_get_urb(urb);
+	spin_unlock_irqrestore(&ps->lock, flags);
+
+	usb_kill_urb(urb);
+	usb_put_urb(urb);
+
 	return 0;
 }
 
@@ -1427,11 +1650,7 @@ static int processcompl(struct async *as, void __user * __user *arg)
 	unsigned int i;
 
 	if (as->userbuffer && urb->actual_length) {
-		if (urb->number_of_packets > 0)		/* Isochronous */
-			i = urb->transfer_buffer_length;
-		else					/* Non-Isoc */
-			i = urb->actual_length;
-		if (copy_to_user(as->userbuffer, urb->transfer_buffer, i))
+		if (copy_urb_data_to_user(as->userbuffer, urb))
 			goto err_out;
 	}
 	if (put_user(as->status, &userurb->status))
@@ -1460,7 +1679,7 @@ err_out:
 	return -EFAULT;
 }
 
-static struct async *reap_as(struct dev_state *ps)
+static struct async *reap_as(struct usb_dev_state *ps)
 {
 	DECLARE_WAITQUEUE(wait, current);
 	struct async *as = NULL;
@@ -1483,7 +1702,7 @@ static struct async *reap_as(struct dev_state *ps)
 	return as;
 }
 
-static int proc_reapurb(struct dev_state *ps, void __user *arg)
+static int proc_reapurb(struct usb_dev_state *ps, void __user *arg)
 {
 	struct async *as = reap_as(ps);
 	if (as) {
@@ -1496,7 +1715,7 @@ static int proc_reapurb(struct dev_state *ps, void __user *arg)
 	return -EIO;
 }
 
-static int proc_reapurbnonblock(struct dev_state *ps, void __user *arg)
+static int proc_reapurbnonblock(struct usb_dev_state *ps, void __user *arg)
 {
 	int retval;
 	struct async *as;
@@ -1511,37 +1730,37 @@ static int proc_reapurbnonblock(struct dev_state *ps, void __user *arg)
 }
 
 #ifdef CONFIG_COMPAT
-static int proc_control_compat(struct dev_state *ps,
+static int proc_control_compat(struct usb_dev_state *ps,
 				struct usbdevfs_ctrltransfer32 __user *p32)
 {
-        struct usbdevfs_ctrltransfer __user *p;
-        __u32 udata;
-        p = compat_alloc_user_space(sizeof(*p));
-        if (copy_in_user(p, p32, (sizeof(*p32) - sizeof(compat_caddr_t))) ||
-            get_user(udata, &p32->data) ||
+	struct usbdevfs_ctrltransfer __user *p;
+	__u32 udata;
+	p = compat_alloc_user_space(sizeof(*p));
+	if (copy_in_user(p, p32, (sizeof(*p32) - sizeof(compat_caddr_t))) ||
+	    get_user(udata, &p32->data) ||
 	    put_user(compat_ptr(udata), &p->data))
 		return -EFAULT;
-        return proc_control(ps, p);
+	return proc_control(ps, p);
 }
 
-static int proc_bulk_compat(struct dev_state *ps,
+static int proc_bulk_compat(struct usb_dev_state *ps,
 			struct usbdevfs_bulktransfer32 __user *p32)
 {
-        struct usbdevfs_bulktransfer __user *p;
-        compat_uint_t n;
-        compat_caddr_t addr;
+	struct usbdevfs_bulktransfer __user *p;
+	compat_uint_t n;
+	compat_caddr_t addr;
 
-        p = compat_alloc_user_space(sizeof(*p));
+	p = compat_alloc_user_space(sizeof(*p));
 
-        if (get_user(n, &p32->ep) || put_user(n, &p->ep) ||
-            get_user(n, &p32->len) || put_user(n, &p->len) ||
-            get_user(n, &p32->timeout) || put_user(n, &p->timeout) ||
-            get_user(addr, &p32->data) || put_user(compat_ptr(addr), &p->data))
-                return -EFAULT;
+	if (get_user(n, &p32->ep) || put_user(n, &p->ep) ||
+	    get_user(n, &p32->len) || put_user(n, &p->len) ||
+	    get_user(n, &p32->timeout) || put_user(n, &p->timeout) ||
+	    get_user(addr, &p32->data) || put_user(compat_ptr(addr), &p->data))
+		return -EFAULT;
 
-        return proc_bulk(ps, p);
+	return proc_bulk(ps, p);
 }
-static int proc_disconnectsignal_compat(struct dev_state *ps, void __user *arg)
+static int proc_disconnectsignal_compat(struct usb_dev_state *ps, void __user *arg)
 {
 	struct usbdevfs_disconnectsignal32 ds;
 
@@ -1579,7 +1798,7 @@ static int get_urb32(struct usbdevfs_urb *kurb,
 	return 0;
 }
 
-static int proc_submiturb_compat(struct dev_state *ps, void __user *arg)
+static int proc_submiturb_compat(struct usb_dev_state *ps, void __user *arg)
 {
 	struct usbdevfs_urb uurb;
 
@@ -1598,10 +1817,10 @@ static int processcompl_compat(struct async *as, void __user * __user *arg)
 	void __user *addr = as->userurb;
 	unsigned int i;
 
-	if (as->userbuffer && urb->actual_length)
-		if (copy_to_user(as->userbuffer, urb->transfer_buffer,
-				 urb->actual_length))
+	if (as->userbuffer && urb->actual_length) {
+		if (copy_urb_data_to_user(as->userbuffer, urb))
 			return -EFAULT;
+	}
 	if (put_user(as->status, &userurb->status))
 		return -EFAULT;
 	if (put_user(urb->actual_length, &userurb->actual_length))
@@ -1625,7 +1844,7 @@ static int processcompl_compat(struct async *as, void __user * __user *arg)
 	return 0;
 }
 
-static int proc_reapurb_compat(struct dev_state *ps, void __user *arg)
+static int proc_reapurb_compat(struct usb_dev_state *ps, void __user *arg)
 {
 	struct async *as = reap_as(ps);
 	if (as) {
@@ -1638,7 +1857,7 @@ static int proc_reapurb_compat(struct dev_state *ps, void __user *arg)
 	return -EIO;
 }
 
-static int proc_reapurbnonblock_compat(struct dev_state *ps, void __user *arg)
+static int proc_reapurbnonblock_compat(struct usb_dev_state *ps, void __user *arg)
 {
 	int retval;
 	struct async *as;
@@ -1655,7 +1874,7 @@ static int proc_reapurbnonblock_compat(struct dev_state *ps, void __user *arg)
 
 #endif
 
-static int proc_disconnectsignal(struct dev_state *ps, void __user *arg)
+static int proc_disconnectsignal(struct usb_dev_state *ps, void __user *arg)
 {
 	struct usbdevfs_disconnectsignal ds;
 
@@ -1666,7 +1885,7 @@ static int proc_disconnectsignal(struct dev_state *ps, void __user *arg)
 	return 0;
 }
 
-static int proc_claiminterface(struct dev_state *ps, void __user *arg)
+static int proc_claiminterface(struct usb_dev_state *ps, void __user *arg)
 {
 	unsigned int ifnum;
 
@@ -1675,7 +1894,7 @@ static int proc_claiminterface(struct dev_state *ps, void __user *arg)
 	return claimintf(ps, ifnum);
 }
 
-static int proc_releaseinterface(struct dev_state *ps, void __user *arg)
+static int proc_releaseinterface(struct usb_dev_state *ps, void __user *arg)
 {
 	unsigned int ifnum;
 	int ret;
@@ -1688,7 +1907,7 @@ static int proc_releaseinterface(struct dev_state *ps, void __user *arg)
 	return 0;
 }
 
-static int proc_ioctl(struct dev_state *ps, struct usbdevfs_ioctl *ctl)
+static int proc_ioctl(struct usb_dev_state *ps, struct usbdevfs_ioctl *ctl)
 {
 	int			size;
 	void			*buf = NULL;
@@ -1698,7 +1917,8 @@ static int proc_ioctl(struct dev_state *ps, struct usbdevfs_ioctl *ctl)
 
 	/* alloc buffer */
 	if ((size = _IOC_SIZE(ctl->ioctl_code)) > 0) {
-		if ((buf = kmalloc(size, GFP_KERNEL)) == NULL)
+		buf = kmalloc(size, GFP_KERNEL);
+		if (buf == NULL)
 			return -ENOMEM;
 		if ((_IOC_DIR(ctl->ioctl_code) & _IOC_WRITE)) {
 			if (copy_from_user(buf, ctl->data, size)) {
@@ -1763,7 +1983,7 @@ static int proc_ioctl(struct dev_state *ps, struct usbdevfs_ioctl *ctl)
 	return retval;
 }
 
-static int proc_ioctl_default(struct dev_state *ps, void __user *arg)
+static int proc_ioctl_default(struct usb_dev_state *ps, void __user *arg)
 {
 	struct usbdevfs_ioctl	ctrl;
 
@@ -1773,7 +1993,7 @@ static int proc_ioctl_default(struct dev_state *ps, void __user *arg)
 }
 
 #ifdef CONFIG_COMPAT
-static int proc_ioctl_compat(struct dev_state *ps, compat_uptr_t arg)
+static int proc_ioctl_compat(struct usb_dev_state *ps, compat_uptr_t arg)
 {
 	struct usbdevfs_ioctl32 __user *uioc;
 	struct usbdevfs_ioctl ctrl;
@@ -1791,7 +2011,7 @@ static int proc_ioctl_compat(struct dev_state *ps, compat_uptr_t arg)
 }
 #endif
 
-static int proc_claim_port(struct dev_state *ps, void __user *arg)
+static int proc_claim_port(struct usb_dev_state *ps, void __user *arg)
 {
 	unsigned portnum;
 	int rc;
@@ -1805,7 +2025,7 @@ static int proc_claim_port(struct dev_state *ps, void __user *arg)
 	return rc;
 }
 
-static int proc_release_port(struct dev_state *ps, void __user *arg)
+static int proc_release_port(struct usb_dev_state *ps, void __user *arg)
 {
 	unsigned portnum;
 
@@ -1814,6 +2034,93 @@ static int proc_release_port(struct dev_state *ps, void __user *arg)
 	return usb_hub_release_port(ps->dev, portnum, ps);
 }
 
+static int proc_get_capabilities(struct usb_dev_state *ps, void __user *arg)
+{
+	__u32 caps;
+
+	caps = USBDEVFS_CAP_ZERO_PACKET | USBDEVFS_CAP_NO_PACKET_SIZE_LIM;
+	if (!ps->dev->bus->no_stop_on_short)
+		caps |= USBDEVFS_CAP_BULK_CONTINUATION;
+	if (ps->dev->bus->sg_tablesize)
+		caps |= USBDEVFS_CAP_BULK_SCATTER_GATHER;
+
+	if (put_user(caps, (__u32 __user *)arg))
+		return -EFAULT;
+
+	return 0;
+}
+
+static int proc_disconnect_claim(struct usb_dev_state *ps, void __user *arg)
+{
+	struct usbdevfs_disconnect_claim dc;
+	struct usb_interface *intf;
+
+	if (copy_from_user(&dc, arg, sizeof(dc)))
+		return -EFAULT;
+
+	intf = usb_ifnum_to_if(ps->dev, dc.interface);
+	if (!intf)
+		return -EINVAL;
+
+	if (intf->dev.driver) {
+		struct usb_driver *driver = to_usb_driver(intf->dev.driver);
+
+		if ((dc.flags & USBDEVFS_DISCONNECT_CLAIM_IF_DRIVER) &&
+				strncmp(dc.driver, intf->dev.driver->name,
+					sizeof(dc.driver)) != 0)
+			return -EBUSY;
+
+		if ((dc.flags & USBDEVFS_DISCONNECT_CLAIM_EXCEPT_DRIVER) &&
+				strncmp(dc.driver, intf->dev.driver->name,
+					sizeof(dc.driver)) == 0)
+			return -EBUSY;
+
+		dev_dbg(&intf->dev, "disconnect by usbfs\n");
+		usb_driver_release_interface(driver, intf);
+	}
+
+	return claimintf(ps, dc.interface);
+}
+
+static int proc_alloc_streams(struct usb_dev_state *ps, void __user *arg)
+{
+	unsigned num_streams, num_eps;
+	struct usb_host_endpoint **eps;
+	struct usb_interface *intf;
+	int r;
+
+	r = parse_usbdevfs_streams(ps, arg, &num_streams, &num_eps,
+				   &eps, &intf);
+	if (r)
+		return r;
+
+	destroy_async_on_interface(ps,
+				   intf->altsetting[0].desc.bInterfaceNumber);
+
+	r = usb_alloc_streams(intf, eps, num_eps, num_streams, GFP_KERNEL);
+	kfree(eps);
+	return r;
+}
+
+static int proc_free_streams(struct usb_dev_state *ps, void __user *arg)
+{
+	unsigned num_eps;
+	struct usb_host_endpoint **eps;
+	struct usb_interface *intf;
+	int r;
+
+	r = parse_usbdevfs_streams(ps, arg, NULL, &num_eps, &eps, &intf);
+	if (r)
+		return r;
+
+	destroy_async_on_interface(ps,
+				   intf->altsetting[0].desc.bInterfaceNumber);
+
+	r = usb_free_streams(intf, eps, num_eps, GFP_KERNEL);
+	kfree(eps);
+	return r;
+}
+
 /*
  * NOTE:  All requests here that have interface numbers as parameters
  * are assuming that somehow the configuration has been prevented from
@@ -1822,8 +2129,8 @@ static int proc_release_port(struct dev_state *ps, void __user *arg)
 static long usbdev_do_ioctl(struct file *file, unsigned int cmd,
 				void __user *p)
 {
-	struct dev_state *ps = file->private_data;
-	struct inode *inode = file->f_path.dentry->d_inode;
+	struct usb_dev_state *ps = file->private_data;
+	struct inode *inode = file_inode(file);
 	struct usb_device *dev = ps->dev;
 	int ret = -ENOTTY;
 
@@ -1984,6 +2291,18 @@ static long usbdev_do_ioctl(struct file *file, unsigned int cmd,
 		snoop(&dev->dev, "%s: RELEASE_PORT\n", __func__);
 		ret = proc_release_port(ps, p);
 		break;
+	case USBDEVFS_GET_CAPABILITIES:
+		ret = proc_get_capabilities(ps, p);
+		break;
+	case USBDEVFS_DISCONNECT_CLAIM:
+		ret = proc_disconnect_claim(ps, p);
+		break;
+	case USBDEVFS_ALLOC_STREAMS:
+		ret = proc_alloc_streams(ps, p);
+		break;
+	case USBDEVFS_FREE_STREAMS:
+		ret = proc_free_streams(ps, p);
+		break;
 	}
 	usb_unlock_device(dev);
 	if (ret >= 0)
@@ -2017,7 +2336,7 @@ static long usbdev_compat_ioctl(struct file *file, unsigned int cmd,
 static unsigned int usbdev_poll(struct file *file,
 				struct poll_table_struct *wait)
 {
-	struct dev_state *ps = file->private_data;
+	struct usb_dev_state *ps = file->private_data;
 	unsigned int mask = 0;
 
 	poll_wait(file, &ps->wait, wait);
@@ -2043,11 +2362,11 @@ const struct file_operations usbdev_file_operations = {
 
 static void usbdev_remove(struct usb_device *udev)
 {
-	struct dev_state *ps;
+	struct usb_dev_state *ps;
 	struct siginfo sinfo;
 
 	while (!list_empty(&udev->filelist)) {
-		ps = list_entry(udev->filelist.next, struct dev_state, list);
+		ps = list_entry(udev->filelist.next, struct usb_dev_state, list);
 		destroy_all_async(ps);
 		wake_up_all(&ps->wait);
 		list_del_init(&ps->list);
@@ -2062,44 +2381,13 @@ static void usbdev_remove(struct usb_device *udev)
 	}
 }
 
-#ifdef CONFIG_USB_DEVICE_CLASS
-static struct class *usb_classdev_class;
-
-static int usb_classdev_add(struct usb_device *dev)
-{
-	struct device *cldev;
-
-	cldev = device_create(usb_classdev_class, &dev->dev, dev->dev.devt,
-			      NULL, "usbdev%d.%d", dev->bus->busnum,
-			      dev->devnum);
-	if (IS_ERR(cldev))
-		return PTR_ERR(cldev);
-	dev->usb_classdev = cldev;
-	return 0;
-}
-
-static void usb_classdev_remove(struct usb_device *dev)
-{
-	if (dev->usb_classdev)
-		device_unregister(dev->usb_classdev);
-}
-
-#else
-#define usb_classdev_add(dev)		0
-#define usb_classdev_remove(dev)	do {} while (0)
-
-#endif
-
 static int usbdev_notify(struct notifier_block *self,
 			       unsigned long action, void *dev)
 {
 	switch (action) {
 	case USB_DEVICE_ADD:
-		if (usb_classdev_add(dev))
-			return NOTIFY_BAD;
 		break;
 	case USB_DEVICE_REMOVE:
-		usb_classdev_remove(dev);
 		usbdev_remove(dev);
 		break;
 	}
@@ -2129,21 +2417,6 @@ int __init usb_devio_init(void)
 		       USB_DEVICE_MAJOR);
 		goto error_cdev;
 	}
-#ifdef CONFIG_USB_DEVICE_CLASS
-	usb_classdev_class = class_create(THIS_MODULE, "usb_device");
-	if (IS_ERR(usb_classdev_class)) {
-		printk(KERN_ERR "Unable to register usb_device class\n");
-		retval = PTR_ERR(usb_classdev_class);
-		cdev_del(&usb_device_cdev);
-		usb_classdev_class = NULL;
-		goto out;
-	}
-	/* devices of this class shadow the major:minor of their parent
-	 * device, so clear ->dev_kobj to prevent adding duplicate entries
-	 * to /sys/dev
-	 */
-	usb_classdev_class->dev_kobj = NULL;
-#endif
 	usb_register_notify(&usbdev_nb);
 out:
 	return retval;
@@ -2156,9 +2429,6 @@ error_cdev:
 void usb_devio_cleanup(void)
 {
 	usb_unregister_notify(&usbdev_nb);
-#ifdef CONFIG_USB_DEVICE_CLASS
-	class_destroy(usb_classdev_class);
-#endif
 	cdev_del(&usb_device_cdev);
 	unregister_chrdev_region(USB_DEVICE_DEV, USB_DEVICE_MAX);
 }