--- local_tree.orig/drivers/usb/core/devio.c 2004-07-26 00:34:29.602731436 +0200
+++ local_tree/drivers/usb/core/devio.c 2004-07-26 00:39:13.980826658 +0200
@@ -1168,10 +1168,17 @@
if (get_user(ifnum, (unsigned int __user *)arg))
return -EFAULT;
- if ((ret = releaseintf(ps, ifnum)) < 0)
- return ret;
+ down(&ps->dev->serialize);
+ if (!connected(ps->dev)) {
+ ret = -ENODEV;
+ goto out;
+ }
+ if ((ret = releaseintf(ps, ifnum)))
+ goto out;
destroy_async_on_interface (ps, ifnum);
- return 0;
+out:
+ up(&ps->dev->serialize);
+ return ret;
}
static int proc_ioctl (struct dev_state *ps, void __user *arg)
@@ -1374,14 +1381,8 @@
break;
case USBDEVFS_RELEASEINTERFACE:
- down(&dev->serialize);
- if (!connected(dev)) {
- up(&dev->serialize);
- return -ENODEV;
- }
snoop(&dev->dev, "%s: RELEASEINTERFACE\n", __FUNCTION__);
ret = proc_releaseinterface(ps, p);
- up(&dev->serialize);
break;
case USBDEVFS_IOCTL:
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