255 	int rv;  in setup_ring()  local
257 	rv = xenbus_setup_ring(dev, GFP_KERNEL, (void **)&priv->shr, 1,  in setup_ring()
259 	if (rv < 0)  in setup_ring()
260 		return rv;  in setup_ring()
262 	rv = xenbus_alloc_evtchn(dev, &priv->evtchn);  in setup_ring()
263 	if (rv)  in setup_ring()
264 		return rv;  in setup_ring()
266 	rv = bind_evtchn_to_irqhandler(priv->evtchn, tpmif_interrupt, 0,  in setup_ring()
268 	if (rv <= 0) {  in setup_ring()
269 		xenbus_dev_fatal(dev, rv, "allocating TPM irq");  in setup_ring()
270 		return rv;  in setup_ring()
272 	priv->irq = rv;  in setup_ring()
275 	rv = xenbus_transaction_start(&xbt);  in setup_ring()
276 	if (rv) {  in setup_ring()
277 		xenbus_dev_fatal(dev, rv, "starting transaction");  in setup_ring()
278 		return rv;  in setup_ring()
281 	rv = xenbus_printf(xbt, dev->nodename,  in setup_ring()
283 	if (rv) {  in setup_ring()
288 	rv = xenbus_printf(xbt, dev->nodename, "event-channel", "%u",  in setup_ring()
290 	if (rv) {  in setup_ring()
295 	rv = xenbus_printf(xbt, dev->nodename, "feature-protocol-v2", "1");  in setup_ring()
296 	if (rv) {  in setup_ring()
301 	rv = xenbus_transaction_end(xbt, 0);  in setup_ring()
302 	if (rv == -EAGAIN)  in setup_ring()
304 	if (rv) {  in setup_ring()
305 		xenbus_dev_fatal(dev, rv, "completing transaction");  in setup_ring()
306 		return rv;  in setup_ring()
316 		xenbus_dev_error(dev, rv, "%s", message);  in setup_ring()
318 	return rv;  in setup_ring()
338 	int rv;  in tpmfront_probe()  local
346 	rv = setup_chip(&dev->dev, priv);  in tpmfront_probe()
347 	if (rv) {  in tpmfront_probe()
349 		return rv;  in tpmfront_probe()
352 	rv = setup_ring(dev, priv);  in tpmfront_probe()
353 	if (rv) {  in tpmfront_probe()
355 		return rv;  in tpmfront_probe()