dev/usb/usb_generic.c

109 static int	ugen_get_iface_driver(struct usb_fifo *f, struct usb_gen_descriptor *ugd);
666 ugen_get_cdesc(struct usb_fifo *f, struct usb_gen_descriptor *ugd)
676 	if (ugd->ugd_data == NULL) {
680 	if ((ugd->ugd_config_index == USB_UNCONFIG_INDEX) ||
681 	    (ugd->ugd_config_index == udev->curr_config_index)) {
690 		    NULL, &cdesc, ugd->ugd_config_index)) {
701 	if (len > ugd->ugd_maxlen) {
702 		len = ugd->ugd_maxlen;
706 	ugd->ugd_actlen = len;
707 	ugd->ugd_offset = 0;
709 	error = copyout(cdesc, ugd->ugd_data, len);
722 ugen_get_sdesc(struct usb_fifo *f, struct usb_gen_descriptor *ugd)
732 	    size, ugd->ugd_lang_id, ugd->ugd_string_index)) {
739 		if (size > ugd->ugd_maxlen) {
740 			size = ugd->ugd_maxlen;
742 		ugd->ugd_actlen = size;
743 		ugd->ugd_offset = 0;
745 		error = copyout(ptr, ugd->ugd_data, size);
760 ugen_get_iface_driver(struct usb_fifo *f, struct usb_gen_descriptor *ugd)
773 	if ((ugd->ugd_data == NULL) || (ugd->ugd_maxlen == 0)) {
778 	iface = usbd_get_iface(udev, ugd->ugd_iface_index);
794 		maxlen = ugd->ugd_maxlen - 1;
800 		ugd->ugd_actlen = len + 1;
803 		error = copyout(buf, ugd->ugd_data, ugd->ugd_actlen);
806 		error = copyout("", ugd->ugd_data, 1);