--- local_tree.orig/drivers/usb/core/devio.c 2004-07-26 00:31:47.183662802 +0200
+++ local_tree/drivers/usb/core/devio.c 2004-07-26 00:34:29.602731436 +0200
@@ -1148,10 +1148,17 @@
static int proc_claiminterface(struct dev_state *ps, void __user *arg)
{
unsigned int ifnum;
+ int ret;
if (get_user(ifnum, (unsigned int __user *)arg))
return -EFAULT;
- return claimintf(ps, ifnum);
+ down(&ps->dev->serialize);
+ if (!connected(ps->dev))
+ ret = -ENODEV;
+ else
+ ret = claimintf(ps, ifnum);
+ up(&ps->dev->serialize);
+ return ret;
}
static int proc_releaseinterface(struct dev_state *ps, void __user *arg)
@@ -1362,14 +1369,8 @@
break;
case USBDEVFS_CLAIMINTERFACE:
- down(&dev->serialize);
- if (!connected(dev)) {
- up(&dev->serialize);
- return -ENODEV;
- }
snoop(&dev->dev, "%s: CLAIMINTERFACE\n", __FUNCTION__);
ret = proc_claiminterface(ps, p);
- up(&dev->serialize);
break;
case USBDEVFS_RELEASEINTERFACE:
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