diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index e09935acae80..bbd029f68faa 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -59,6 +59,22 @@ /* Mutual exclusion for removal, open, and release */ DEFINE_MUTEX(usbfs_mutex); +struct dev_state { + struct list_head list; /* state list */ + struct usb_device *dev; + struct file *file; + spinlock_t lock; /* protects the async urb lists */ + struct list_head async_pending; + struct list_head async_completed; + wait_queue_head_t wait; /* wake up if a request completed */ + unsigned int discsignr; + struct pid *disc_pid; + uid_t disc_uid, disc_euid; + void __user *disccontext; + unsigned long ifclaimed; + u32 secid; +}; + struct async { struct list_head asynclist; struct dev_state *ps; @@ -1680,6 +1696,28 @@ const struct file_operations usbdev_file_operations = { .release = usbdev_release, }; +void usb_fs_classdev_common_remove(struct usb_device *udev) +{ + struct dev_state *ps; + struct siginfo sinfo; + + while (!list_empty(&udev->filelist)) { + ps = list_entry(udev->filelist.next, struct dev_state, list); + destroy_all_async(ps); + wake_up_all(&ps->wait); + list_del_init(&ps->list); + if (ps->discsignr) { + sinfo.si_signo = ps->discsignr; + sinfo.si_errno = EPIPE; + sinfo.si_code = SI_ASYNCIO; + sinfo.si_addr = ps->disccontext; + kill_pid_info_as_uid(ps->discsignr, &sinfo, + ps->disc_pid, ps->disc_uid, + ps->disc_euid, ps->secid); + } + } +} + #ifdef CONFIG_USB_DEVICE_CLASS static struct class *usb_classdev_class; @@ -1699,6 +1737,7 @@ static int usb_classdev_add(struct usb_device *dev) static void usb_classdev_remove(struct usb_device *dev) { device_unregister(dev->usb_classdev); + usb_fs_classdev_common_remove(dev); } static int usb_classdev_notify(struct notifier_block *self, diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c index 1d253dd4ea81..db410e92c80d 100644 --- a/drivers/usb/core/inode.c +++ b/drivers/usb/core/inode.c @@ -712,25 +712,11 @@ static void usbfs_add_device(struct usb_device *dev) static void usbfs_remove_device(struct usb_device *dev) { - struct dev_state *ds; - struct siginfo sinfo; - if (dev->usbfs_dentry) { fs_remove_file (dev->usbfs_dentry); dev->usbfs_dentry = NULL; } - while (!list_empty(&dev->filelist)) { - ds = list_entry(dev->filelist.next, struct dev_state, list); - wake_up_all(&ds->wait); - list_del_init(&ds->list); - if (ds->discsignr) { - sinfo.si_signo = ds->discsignr; - sinfo.si_errno = EPIPE; - sinfo.si_code = SI_ASYNCIO; - sinfo.si_addr = ds->disccontext; - kill_pid_info_as_uid(ds->discsignr, &sinfo, ds->disc_pid, ds->disc_uid, ds->disc_euid, ds->secid); - } - } + usb_fs_classdev_common_remove(dev); } static int usbfs_notify(struct notifier_block *self, unsigned long action, void *dev) diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h index d3eb0a29bca1..d9a6e16dbf84 100644 --- a/drivers/usb/core/usb.h +++ b/drivers/usb/core/usb.h @@ -142,26 +142,11 @@ extern struct usb_driver usbfs_driver; extern const struct file_operations usbfs_devices_fops; extern const struct file_operations usbdev_file_operations; extern void usbfs_conn_disc_event(void); +extern void usb_fs_classdev_common_remove(struct usb_device *udev); extern int usb_devio_init(void); extern void usb_devio_cleanup(void); -struct dev_state { - struct list_head list; /* state list */ - struct usb_device *dev; - struct file *file; - spinlock_t lock; /* protects the async urb lists */ - struct list_head async_pending; - struct list_head async_completed; - wait_queue_head_t wait; /* wake up if a request completed */ - unsigned int discsignr; - struct pid *disc_pid; - uid_t disc_uid, disc_euid; - void __user *disccontext; - unsigned long ifclaimed; - u32 secid; -}; - /* internal notify stuff */ extern void usb_notify_add_device(struct usb_device *udev); extern void usb_notify_remove_device(struct usb_device *udev);