From cc476b42a39d5a66d94f46cade972dcb8ee278df Mon Sep 17 00:00:00 2001 From: Robert Baldyga Date: Fri, 31 Jul 2015 16:00:13 +0200 Subject: usb: gadget: encapsulate endpoint claiming mechanism So far it was necessary for usb functions to set ep->driver_data in endpoint obtained from autoconfig to non-null value, to indicate that endpoint is claimed by function (in autoconfig it was checked if endpoint has set this field to non-null value, and if it has, it was assumed that it is claimed). It could cause bugs because if some function doesn't set this field autoconfig could return the same endpoint more than one time. To help to avoid such bugs this patch adds claimed flag to struct usb_ep, and encapsulates endpoint claiming mechanism inside usb_ep_autoconfig_ss() and usb_ep_autoconfig_reset(), so now usb functions don't need to perform any additional actions to mark endpoint obtained from autoconfig as claimed. Signed-off-by: Robert Baldyga Signed-off-by: Felipe Balbi --- include/linux/usb/gadget.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux/usb') diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index 353a72096dda..68fb5e8b18c3 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -173,6 +173,7 @@ struct usb_ep { const char *name; const struct usb_ep_ops *ops; struct list_head ep_list; + bool claimed; unsigned maxpacket:16; unsigned maxpacket_limit:16; unsigned max_streams:16; -- cgit v1.2.3