261 	struct fsg_dev		*fsg, *new_fsg;  member
343 	if (common->fsg)  in __fsg_is_set()
380 static int fsg_set_halt(struct fsg_dev *fsg, struct usb_ep *ep)  in fsg_set_halt()  argument
384 	if (ep == fsg->bulk_in)  in fsg_set_halt()
386 	else if (ep == fsg->bulk_out)  in fsg_set_halt()
390 	DBG(fsg, "%s set halt\n", name);  in fsg_set_halt()
505 	struct fsg_dev		*fsg = fsg_from_func(f);  in fsg_setup()  local
506 	struct usb_request	*req = fsg->common->ep0req;  in fsg_setup()
511 	if (!fsg_is_set(fsg->common))  in fsg_setup()
514 	++fsg->common->ep0_req_tag;	/* Record arrival of a new request */  in fsg_setup()
517 	dump_msg(fsg, "ep0-setup", (u8 *) ctrl, sizeof(*ctrl));  in fsg_setup()
525 		if (w_index != fsg->interface_number || w_value != 0 ||  in fsg_setup()
533 		DBG(fsg, "bulk reset request\n");  in fsg_setup()
534 		raise_exception(fsg->common, FSG_STATE_RESET);  in fsg_setup()
541 		if (w_index != fsg->interface_number || w_value != 0 ||  in fsg_setup()
544 		VDBG(fsg, "get max LUN\n");  in fsg_setup()
545 		*(u8 *)req->buf = _fsg_common_get_max_lun(fsg->common);  in fsg_setup()
549 		return ep0_queue(fsg->common);  in fsg_setup()
552 	VDBG(fsg,  in fsg_setup()
565 static void start_transfer(struct fsg_dev *fsg, struct usb_ep *ep,  in start_transfer()  argument
571 	if (ep == fsg->bulk_in)  in start_transfer()
572 		dump_msg(fsg, "bulk-in", req->buf, req->length);  in start_transfer()
574 	spin_lock_irq(&fsg->common->lock);  in start_transfer()
577 	spin_unlock_irq(&fsg->common->lock);  in start_transfer()
593 		WARNING(fsg, "error in submission: %s --> %d\n", ep->name, rc);  in start_transfer()
600 	start_transfer(common->fsg, common->fsg->bulk_in,  in start_in_transfer()
609 	start_transfer(common->fsg, common->fsg->bulk_out,  in start_out_transfer()
1425 static int halt_bulk_in_endpoint(struct fsg_dev *fsg)  in halt_bulk_in_endpoint()  argument
1429 	rc = fsg_set_halt(fsg, fsg->bulk_in);  in halt_bulk_in_endpoint()
1431 		VDBG(fsg, "delayed bulk-in endpoint halt\n");  in halt_bulk_in_endpoint()
1434 			WARNING(fsg, "usb_ep_set_halt -> %d\n", rc);  in halt_bulk_in_endpoint()
1442 		rc = usb_ep_set_halt(fsg->bulk_in);  in halt_bulk_in_endpoint()
1447 static int wedge_bulk_in_endpoint(struct fsg_dev *fsg)  in wedge_bulk_in_endpoint()  argument
1451 	DBG(fsg, "bulk-in set wedge\n");  in wedge_bulk_in_endpoint()
1452 	rc = usb_ep_set_wedge(fsg->bulk_in);  in wedge_bulk_in_endpoint()
1454 		VDBG(fsg, "delayed bulk-in endpoint wedge\n");  in wedge_bulk_in_endpoint()
1457 			WARNING(fsg, "usb_ep_set_wedge -> %d\n", rc);  in wedge_bulk_in_endpoint()
1465 		rc = usb_ep_set_wedge(fsg->bulk_in);  in wedge_bulk_in_endpoint()
1543 			fsg_set_halt(common->fsg, common->fsg->bulk_out);  in finish_reply()
1544 			rc = halt_bulk_in_endpoint(common->fsg);  in finish_reply()
1580 				rc = halt_bulk_in_endpoint(common->fsg);  in finish_reply()
1608 				fsg_set_halt(common->fsg,  in finish_reply()
1609 					     common->fsg->bulk_out);  in finish_reply()
2108 static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh)  in received_cbw()  argument
2112 	struct fsg_common	*common = fsg->common;  in received_cbw()
2115 	if (req->status || test_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags))  in received_cbw()
2122 		DBG(fsg, "invalid CBW: len %u sig 0x%x\n",  in received_cbw()
2137 		wedge_bulk_in_endpoint(fsg);  in received_cbw()
2138 		set_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags);  in received_cbw()
2146 		DBG(fsg, "non-meaningful CBW: lun = %u, flags = 0x%x, "  in received_cbw()
2155 			fsg_set_halt(fsg, fsg->bulk_out);  in received_cbw()
2156 			halt_bulk_in_endpoint(fsg);  in received_cbw()
2212 	rc = fsg_is_set(common) ? received_cbw(common->fsg, bh) : -EIO;  in get_next_command()
2234 	struct fsg_dev *fsg;  in do_set_interface()  local
2242 	if (common->fsg) {  in do_set_interface()
2243 		fsg = common->fsg;  in do_set_interface()
2249 				usb_ep_free_request(fsg->bulk_in, bh->inreq);  in do_set_interface()
2253 				usb_ep_free_request(fsg->bulk_out, bh->outreq);  in do_set_interface()
2259 		if (fsg->bulk_in_enabled) {  in do_set_interface()
2260 			usb_ep_disable(fsg->bulk_in);  in do_set_interface()
2261 			fsg->bulk_in->driver_data = NULL;  in do_set_interface()
2262 			fsg->bulk_in_enabled = 0;  in do_set_interface()
2264 		if (fsg->bulk_out_enabled) {  in do_set_interface()
2265 			usb_ep_disable(fsg->bulk_out);  in do_set_interface()
2266 			fsg->bulk_out->driver_data = NULL;  in do_set_interface()
2267 			fsg->bulk_out_enabled = 0;  in do_set_interface()
2270 		common->fsg = NULL;  in do_set_interface()
2278 	common->fsg = new_fsg;  in do_set_interface()
2279 	fsg = common->fsg;  in do_set_interface()
2282 	rc = config_ep_by_speed(common->gadget, &(fsg->function), fsg->bulk_in);  in do_set_interface()
2285 	rc = usb_ep_enable(fsg->bulk_in);  in do_set_interface()
2288 	fsg->bulk_in->driver_data = common;  in do_set_interface()
2289 	fsg->bulk_in_enabled = 1;  in do_set_interface()
2291 	rc = config_ep_by_speed(common->gadget, &(fsg->function),  in do_set_interface()
2292 				fsg->bulk_out);  in do_set_interface()
2295 	rc = usb_ep_enable(fsg->bulk_out);  in do_set_interface()
2298 	fsg->bulk_out->driver_data = common;  in do_set_interface()
2299 	fsg->bulk_out_enabled = 1;  in do_set_interface()
2300 	common->bulk_out_maxpacket = usb_endpoint_maxp(fsg->bulk_out->desc);  in do_set_interface()
2301 	clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags);  in do_set_interface()
2307 		rc = alloc_request(common, fsg->bulk_in, &bh->inreq);  in do_set_interface()
2310 		rc = alloc_request(common, fsg->bulk_out, &bh->outreq);  in do_set_interface()
2332 	struct fsg_dev *fsg = fsg_from_func(f);  in fsg_set_alt()  local
2333 	fsg->common->new_fsg = fsg;  in fsg_set_alt()
2334 	raise_exception(fsg->common, FSG_STATE_CONFIG_CHANGE);  in fsg_set_alt()
2340 	struct fsg_dev *fsg = fsg_from_func(f);  in fsg_disable()  local
2341 	fsg->common->new_fsg = NULL;  in fsg_disable()
2342 	raise_exception(fsg->common, FSG_STATE_CONFIG_CHANGE);  in fsg_disable()
2374 	if (likely(common->fsg)) {  in handle_exception()
2378 				usb_ep_dequeue(common->fsg->bulk_in, bh->inreq);  in handle_exception()
2380 				usb_ep_dequeue(common->fsg->bulk_out,  in handle_exception()
2398 		if (common->fsg->bulk_in_enabled)  in handle_exception()
2399 			usb_ep_fifo_flush(common->fsg->bulk_in);  in handle_exception()
2400 		if (common->fsg->bulk_out_enabled)  in handle_exception()
2401 			usb_ep_fifo_flush(common->fsg->bulk_out);  in handle_exception()
2455 				       &common->fsg->atomic_bitflags))  in handle_exception()
2456 			usb_ep_clear_halt(common->fsg->bulk_in);  in handle_exception()
3013 	struct fsg_dev		*fsg = fsg_from_func(f);  in fsg_bind()  local
3014 	struct fsg_common	*common = fsg->common;  in fsg_bind()
3031 		ret = fsg_common_set_cdev(fsg->common, c->cdev,  in fsg_bind()
3032 					  fsg->common->can_stall);  in fsg_bind()
3035 		fsg_common_set_inquiry_string(fsg->common, NULL, NULL);  in fsg_bind()
3053 	fsg->gadget = gadget;  in fsg_bind()
3060 	fsg->interface_number = i;  in fsg_bind()
3066 	ep->driver_data = fsg->common;	/* claim the endpoint */  in fsg_bind()
3067 	fsg->bulk_in = ep;  in fsg_bind()
3072 	ep->driver_data = fsg->common;	/* claim the endpoint */  in fsg_bind()
3073 	fsg->bulk_out = ep;  in fsg_bind()
3100 	ERROR(fsg, "unable to autoconfigure all endpoints\n");  in fsg_bind()
3108 	struct fsg_dev		*fsg = fsg_from_func(f);  in fsg_unbind()  local
3109 	struct fsg_common	*common = fsg->common;  in fsg_unbind()
3111 	DBG(fsg, "unbind\n");  in fsg_unbind()
3112 	if (fsg->common->fsg == fsg) {  in fsg_unbind()
3113 		fsg->common->new_fsg = NULL;  in fsg_unbind()
3114 		raise_exception(fsg->common, FSG_STATE_CONFIG_CHANGE);  in fsg_unbind()
3116 		wait_event(common->fsg_wait, common->fsg != fsg);  in fsg_unbind()
3119 	usb_free_all_descriptors(&fsg->function);  in fsg_unbind()
3521 	struct fsg_dev *fsg;  in fsg_free()  local
3524 	fsg = container_of(f, struct fsg_dev, function);  in fsg_free()
3531 	kfree(fsg);  in fsg_free()
3538 	struct fsg_dev *fsg;  in fsg_alloc()  local
3540 	fsg = kzalloc(sizeof(*fsg), GFP_KERNEL);  in fsg_alloc()
3541 	if (unlikely(!fsg))  in fsg_alloc()
3548 	fsg->function.name	= FSG_DRIVER_DESC;  in fsg_alloc()
3549 	fsg->function.bind	= fsg_bind;  in fsg_alloc()
3550 	fsg->function.unbind	= fsg_unbind;  in fsg_alloc()
3551 	fsg->function.setup	= fsg_setup;  in fsg_alloc()
3552 	fsg->function.set_alt	= fsg_set_alt;  in fsg_alloc()
3553 	fsg->function.disable	= fsg_disable;  in fsg_alloc()
3554 	fsg->function.free_func	= fsg_free;  in fsg_alloc()
3556 	fsg->common               = common;  in fsg_alloc()
3558 	return &fsg->function;  in fsg_alloc()