2 files changed, 13 insertions, 0 deletions

diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index 4aa0e4652228..366facccf4f6 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -215,6 +215,18 @@ done:
 }
 EXPORT_SYMBOL_GPL(usb_add_function);
 
+void usb_remove_function(struct usb_configuration *c, struct usb_function *f)
+{
+        if (f->disable)
+                f->disable(f);
+
+        bitmap_zero(f->endpoints, 32);
+        list_del(&f->list);
+        if (f->unbind)
+                f->unbind(c, f);
+}
+EXPORT_SYMBOL_GPL(usb_remove_function);
+
 /**
  * usb_function_deactivate - prevent function and gadget enumeration
  * @function: the function that isn't yet ready to respond
diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h
index 3834e3330b23..8c7a6295ae78 100644
--- a/include/linux/usb/composite.h
+++ b/include/linux/usb/composite.h
@@ -461,6 +461,7 @@ struct usb_configuration *usb_get_config(struct usb_composite_dev *cdev,
                 int val);
 int usb_add_config_only(struct usb_composite_dev *cdev,
                 struct usb_configuration *config);
+void usb_remove_function(struct usb_configuration *c, struct usb_function *f);
 
 #define DECLARE_USB_FUNCTION(_name, _inst_alloc, _func_alloc)           \
         static struct usb_function_driver _name ## usb_func = {         \