From b473577854fea63055ff9ab84f0f52a3e8aed15e Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:05 +0100 Subject: 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 Signed-off-by: Felipe Balbi --- drivers/usb/gadget/composite.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 4aa0e46..366facc 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 -- cgit v1.1