195 	int rv;  in setup_ring()  local
204 	rv = xenbus_grant_ring(dev, &priv->shr, 1, &gref);  in setup_ring()
205 	if (rv < 0)  in setup_ring()
206 		return rv;  in setup_ring()
210 	rv = xenbus_alloc_evtchn(dev, &priv->evtchn);  in setup_ring()
211 	if (rv)  in setup_ring()
212 		return rv;  in setup_ring()
214 	rv = bind_evtchn_to_irqhandler(priv->evtchn, tpmif_interrupt, 0,  in setup_ring()
216 	if (rv <= 0) {  in setup_ring()
217 		xenbus_dev_fatal(dev, rv, "allocating TPM irq");  in setup_ring()
218 		return rv;  in setup_ring()
220 	priv->chip->vendor.irq = rv;  in setup_ring()
223 	rv = xenbus_transaction_start(&xbt);  in setup_ring()
224 	if (rv) {  in setup_ring()
225 		xenbus_dev_fatal(dev, rv, "starting transaction");  in setup_ring()
226 		return rv;  in setup_ring()
229 	rv = xenbus_printf(xbt, dev->nodename,  in setup_ring()
231 	if (rv) {  in setup_ring()
236 	rv = xenbus_printf(xbt, dev->nodename, "event-channel", "%u",  in setup_ring()
238 	if (rv) {  in setup_ring()
243 	rv = xenbus_printf(xbt, dev->nodename, "feature-protocol-v2", "1");  in setup_ring()
244 	if (rv) {  in setup_ring()
249 	rv = xenbus_transaction_end(xbt, 0);  in setup_ring()
250 	if (rv == -EAGAIN)  in setup_ring()
252 	if (rv) {  in setup_ring()
253 		xenbus_dev_fatal(dev, rv, "completing transaction");  in setup_ring()
254 		return rv;  in setup_ring()
264 		xenbus_dev_error(dev, rv, "%s", message);  in setup_ring()
266 	return rv;  in setup_ring()
291 	int rv;  in tpmfront_probe()  local
299 	rv = setup_chip(&dev->dev, priv);  in tpmfront_probe()
300 	if (rv) {  in tpmfront_probe()
302 		return rv;  in tpmfront_probe()
305 	rv = setup_ring(dev, priv);  in tpmfront_probe()
306 	if (rv) {  in tpmfront_probe()
310 		return rv;  in tpmfront_probe()