* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
- * $Id: devio.c,v 1.7 2000/02/01 17:28:48 fliegl Exp $
- *
* This file implements the usbfs/x/y files, where
* x is the bus number and y the device number.
*
/* 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;
struct dev_state *ps;
int ret;
+ lock_kernel();
/* Protect against simultaneous removal or release */
mutex_lock(&usbfs_mutex);
if (ret)
kfree(ps);
mutex_unlock(&usbfs_mutex);
+ unlock_kernel();
return ret;
}
static int proc_resetdevice(struct dev_state *ps)
{
- return usb_reset_composite_device(ps->dev, NULL);
+ return usb_reset_device(ps->dev);
}
static int proc_setintf(struct dev_state *ps, void __user *arg)
.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;
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,