255 	int rv;  in setup_ring()  local
264 	rv = xenbus_grant_ring(dev, priv->shr, 1, &gref);  in setup_ring()
265 	if (rv < 0)  in setup_ring()
266 		return rv;  in setup_ring()
270 	rv = xenbus_alloc_evtchn(dev, &priv->evtchn);  in setup_ring()
271 	if (rv)  in setup_ring()
272 		return rv;  in setup_ring()
274 	rv = bind_evtchn_to_irqhandler(priv->evtchn, tpmif_interrupt, 0,  in setup_ring()
276 	if (rv <= 0) {  in setup_ring()
277 		xenbus_dev_fatal(dev, rv, "allocating TPM irq");  in setup_ring()
278 		return rv;  in setup_ring()
280 	priv->irq = rv;  in setup_ring()
283 	rv = xenbus_transaction_start(&xbt);  in setup_ring()
284 	if (rv) {  in setup_ring()
285 		xenbus_dev_fatal(dev, rv, "starting transaction");  in setup_ring()
286 		return rv;  in setup_ring()
289 	rv = xenbus_printf(xbt, dev->nodename,  in setup_ring()
291 	if (rv) {  in setup_ring()
296 	rv = xenbus_printf(xbt, dev->nodename, "event-channel", "%u",  in setup_ring()
298 	if (rv) {  in setup_ring()
303 	rv = xenbus_printf(xbt, dev->nodename, "feature-protocol-v2", "1");  in setup_ring()
304 	if (rv) {  in setup_ring()
309 	rv = xenbus_transaction_end(xbt, 0);  in setup_ring()
310 	if (rv == -EAGAIN)  in setup_ring()
312 	if (rv) {  in setup_ring()
313 		xenbus_dev_fatal(dev, rv, "completing transaction");  in setup_ring()
314 		return rv;  in setup_ring()
324 		xenbus_dev_error(dev, rv, "%s", message);  in setup_ring()
326 	return rv;  in setup_ring()
350 	int rv;  in tpmfront_probe()  local
358 	rv = setup_chip(&dev->dev, priv);  in tpmfront_probe()
359 	if (rv) {  in tpmfront_probe()
361 		return rv;  in tpmfront_probe()
364 	rv = setup_ring(dev, priv);  in tpmfront_probe()
365 	if (rv) {  in tpmfront_probe()
367 		return rv;  in tpmfront_probe()