usb/gadget/composite.c

304  * method to allocate resources such as interface and string identifiers
453  * usb_interface_id() - allocate an unused interface ID
454  * @config: configuration associated with the interface
455  * @function: function handling the interface
459  * allocate new interface IDs.  The function driver will then store that
460  * ID in interface, association, CDC union, and other descriptors.  It
461  * will also handle any control requests targeted at that interface,
465  * All interface identifier should be allocated using this routine, to
467  * different meanings to the same identifier.  Note that since interface
472  * Returns the interface ID which was allocated; or -ENODEV if no
473  * more interface IDs can be allocated.
481 		config->interface[id] = function;
517 		if (func->config->interface[id] == func)
991 		struct usb_function	*f = c->interface[tmp];
1020 			DBG(cdev, "interface %d (%s/%p) alt 0 --> %d\n",
1029 			 "%s: interface %d (%s) requested delayed status\n",
1083 	memset(config->interface, 0, sizeof(config->interface));
1102  * resources such as interface IDs and endpoints.
1157 			struct usb_function	*f = config->interface[i];
1161 			DBG(cdev, "  interface %d = %s/%p\n",
1628 		f = c->interface[i];
1653 		f = c->interface[i];
1679 static int count_ext_prop(struct usb_configuration *c, int interface)
1684 	f = c->interface[interface];
1688 		if (interface != f->os_desc_table[j].if_id)
1697 static int len_ext_prop(struct usb_configuration *c, int interface)
1704 	f = c->interface[interface];
1706 		if (interface != f->os_desc_table[j].if_id)
1715 static int fill_ext_prop(struct usb_configuration *c, int interface, u8 *buf)
1722 	f = c->interface[interface];
1726 		if (interface != f->os_desc_table[j].if_id)
1942 		f = cdev->config->interface[intf];
1958 			 "%s: interface %d (%s) requested delayed status\n",
1971 		f = cdev->config->interface[intf];
1997 		 * first interface of the function
2007 		f = cdev->config->interface[intf];
2029 	 * only for the first interface of the function
2041 			f = cdev->config->interface[intf];
2102 			int				interface;
2133 				interface = w_value >> 8;
2134 				if (interface >= MAX_CONFIG_INTERFACES ||
2135 				    !os_desc_cfg->interface[interface])
2139 					interface);
2142 					interface);
2147 							      interface, buf);
2231 			f = cdev->config->interface[intf];
2451 	/* interface and string IDs start at zero via kzalloc.