fix 820-usb_add_usb_find_device_by_name.patch

SVN-Revision: 34254

target/linux/generic/patches-3.7/820-usb_add_usb_find_device_by_name.patch

@@ -8,6 +8,7 @@
 +					    const char *name)
 +{
 +	struct usb_device *ret_dev = NULL;
++	struct usb_device *childdev = NULL;
 +	int child;
 +
 +	dev_dbg(&dev->dev, "check for name %s ...\n", name);
@@ -18,13 +19,12 @@
 +		ret_dev = usb_get_dev(dev);
 +		goto exit;
 +	}
-+
 +	/* look through all of the children of this device */
-+	for (child = 0; child < dev->maxchild; ++child) {
-+		if (dev->children[child]) {
-+			usb_lock_device(dev->children[child]);
-+			ret_dev = match_device_name(dev->children[child], name);
-+			usb_unlock_device(dev->children[child]);
++	usb_hub_for_each_child(dev, child, childdev) {
++		if (childdev) {
++			usb_lock_device(childdev);
++			ret_dev = match_device_name(childdev, name);
++			usb_unlock_device(childdev);
 +			if (ret_dev)
 +				goto exit;
 +		}