197 	int rv;  in setup_ring()  local
206 	rv = xenbus_grant_ring(dev, &priv->shr, 1, &gref);  in setup_ring()
207 	if (rv < 0)  in setup_ring()
208 		return rv;  in setup_ring()
212 	rv = xenbus_alloc_evtchn(dev, &priv->evtchn);  in setup_ring()
213 	if (rv)  in setup_ring()
214 		return rv;  in setup_ring()
216 	rv = bind_evtchn_to_irqhandler(priv->evtchn, tpmif_interrupt, 0,  in setup_ring()
218 	if (rv <= 0) {  in setup_ring()
219 		xenbus_dev_fatal(dev, rv, "allocating TPM irq");  in setup_ring()
220 		return rv;  in setup_ring()
222 	priv->irq = rv;  in setup_ring()
225 	rv = xenbus_transaction_start(&xbt);  in setup_ring()
226 	if (rv) {  in setup_ring()
227 		xenbus_dev_fatal(dev, rv, "starting transaction");  in setup_ring()
228 		return rv;  in setup_ring()
231 	rv = xenbus_printf(xbt, dev->nodename,  in setup_ring()
233 	if (rv) {  in setup_ring()
238 	rv = xenbus_printf(xbt, dev->nodename, "event-channel", "%u",  in setup_ring()
240 	if (rv) {  in setup_ring()
245 	rv = xenbus_printf(xbt, dev->nodename, "feature-protocol-v2", "1");  in setup_ring()
246 	if (rv) {  in setup_ring()
251 	rv = xenbus_transaction_end(xbt, 0);  in setup_ring()
252 	if (rv == -EAGAIN)  in setup_ring()
254 	if (rv) {  in setup_ring()
255 		xenbus_dev_fatal(dev, rv, "completing transaction");  in setup_ring()
256 		return rv;  in setup_ring()
266 		xenbus_dev_error(dev, rv, "%s", message);  in setup_ring()
268 	return rv;  in setup_ring()
293 	int rv;  in tpmfront_probe()  local
301 	rv = setup_chip(&dev->dev, priv);  in tpmfront_probe()
302 	if (rv) {  in tpmfront_probe()
304 		return rv;  in tpmfront_probe()
307 	rv = setup_ring(dev, priv);  in tpmfront_probe()
308 	if (rv) {  in tpmfront_probe()
311 		return rv;  in tpmfront_probe()