usb: gadget: composite: add usb_remove_function()

This will be used to remove a single function from a given config. Right
now "ignore" that an error at ->bind() time and cleanup later during
composite_unbind() / remove_config().

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 1 insertions, 0 deletions

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 = {         \