From aaeab02ddcc830e31c33cdb72a3c117b2d499ae2 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Fri, 23 Mar 2018 13:44:06 +1100 Subject: usb/gadget: Add an EP dispose() callback for EP lifetime tracking Some UDC may want to allocate endpoints dynamically, either because the HW supports an arbitrary large number or because (like the Aspeed BMC SoCs), the pool of HW endpoints is shared between multiple gadgets. The allocation side can be done rather easily using the existing match_ep() UDC hook. However we have no good place to "free" them. This implements a "simple" variant of this, which calls an EP dispose callback on all EPs associated with a gadget when the composite device gets unbound. This is required by my upcoming Aspeed vHub driver. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Felipe Balbi --- include/linux/usb/gadget.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux/usb/gadget.h') diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index 66a5cff7ee14..e3424234b23a 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -129,6 +129,7 @@ struct usb_ep_ops { int (*enable) (struct usb_ep *ep, const struct usb_endpoint_descriptor *desc); int (*disable) (struct usb_ep *ep); + void (*dispose) (struct usb_ep *ep); struct usb_request *(*alloc_request) (struct usb_ep *ep, gfp_t gfp_flags); -- cgit v1.2.3