X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fusb%2Fcore%2Fmessage.c;h=8e641b5893edb7a6195c34e43248540fbff39aa6;hb=e09b41010ba33a20a87472ee821fa407a5b8da36;hp=f368d2053da534ca975804dfad2bd8ddc77d5fba;hpb=f93b97fd65072de626c074dbe099a1fff05ce060;p=kvmfornfv.git

diff --git a/kernel/drivers/usb/core/message.c b/kernel/drivers/usb/core/message.c
index f368d2053..8e641b589 100644
--- a/kernel/drivers/usb/core/message.c
+++ b/kernel/drivers/usb/core/message.c
@@ -1387,8 +1387,6 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate)
 	 * new altsetting.
 	 */
 	if (manual) {
-		int i;
-
 		for (i = 0; i < alt->desc.bNumEndpoints; i++) {
 			epaddr = alt->endpoint[i].desc.bEndpointAddress;
 			pipe = __create_pipe(dev,
@@ -1555,6 +1553,44 @@ static void usb_release_interface(struct device *dev)
 	kfree(intf);
 }
 
+/*
+ * usb_deauthorize_interface - deauthorize an USB interface
+ *
+ * @intf: USB interface structure
+ */
+void usb_deauthorize_interface(struct usb_interface *intf)
+{
+	struct device *dev = &intf->dev;
+
+	device_lock(dev->parent);
+
+	if (intf->authorized) {
+		device_lock(dev);
+		intf->authorized = 0;
+		device_unlock(dev);
+
+		usb_forced_unbind_intf(intf);
+	}
+
+	device_unlock(dev->parent);
+}
+
+/*
+ * usb_authorize_interface - authorize an USB interface
+ *
+ * @intf: USB interface structure
+ */
+void usb_authorize_interface(struct usb_interface *intf)
+{
+	struct device *dev = &intf->dev;
+
+	if (!intf->authorized) {
+		device_lock(dev);
+		intf->authorized = 1; /* authorize interface */
+		device_unlock(dev);
+	}
+}
+
 static int usb_if_uevent(struct device *dev, struct kobj_uevent_env *env)
 {
 	struct usb_device *usb_dev;
@@ -1807,6 +1843,7 @@ free_interfaces:
 		intfc = cp->intf_cache[i];
 		intf->altsetting = intfc->altsetting;
 		intf->num_altsetting = intfc->num_altsetting;
+		intf->authorized = !!HCD_INTF_AUTHORIZED(hcd);
 		kref_get(&intfc->ref);
 
 		alt = usb_altnum_to_altsetting(intf, 0);