115 	int err;  in xenbus_watch_path()  local
120 	err = register_xenbus_watch(watch);  in xenbus_watch_path()
122 	if (err) {  in xenbus_watch_path()
125 		xenbus_dev_fatal(dev, err, "adding watch on %s", path);  in xenbus_watch_path()
128 	return err;  in xenbus_watch_path()
154 	int err;  in xenbus_watch_pathfmt()  local
166 	err = xenbus_watch_path(dev, path, watch, callback);  in xenbus_watch_pathfmt()
168 	if (err)  in xenbus_watch_pathfmt()
170 	return err;  in xenbus_watch_pathfmt()
196 	int err, abort;  in __xenbus_switch_state()  local
204 	err = xenbus_transaction_start(&xbt);  in __xenbus_switch_state()
205 	if (err) {  in __xenbus_switch_state()
206 		xenbus_switch_fatal(dev, depth, err, "starting transaction");  in __xenbus_switch_state()
210 	err = xenbus_scanf(xbt, dev->nodename, "state", "%d", &current_state);  in __xenbus_switch_state()
211 	if (err != 1)  in __xenbus_switch_state()
214 	err = xenbus_printf(xbt, dev->nodename, "state", "%d", state);  in __xenbus_switch_state()
215 	if (err) {  in __xenbus_switch_state()
216 		xenbus_switch_fatal(dev, depth, err, "writing new state");  in __xenbus_switch_state()
222 	err = xenbus_transaction_end(xbt, abort);  in __xenbus_switch_state()
223 	if (err) {  in __xenbus_switch_state()
224 		if (err == -EAGAIN && !abort)  in __xenbus_switch_state()
226 		xenbus_switch_fatal(dev, depth, err, "ending transaction");  in __xenbus_switch_state()
267 static void xenbus_va_dev_error(struct xenbus_device *dev, int err,  in xenbus_va_dev_error()  argument
279 	len = sprintf(printf_buffer, "%i ", -err);  in xenbus_va_dev_error()
313 void xenbus_dev_error(struct xenbus_device *dev, int err, const char *fmt, ...)  in xenbus_dev_error()  argument
318 	xenbus_va_dev_error(dev, err, fmt, ap);  in xenbus_dev_error()
334 void xenbus_dev_fatal(struct xenbus_device *dev, int err, const char *fmt, ...)  in xenbus_dev_fatal()  argument
339 	xenbus_va_dev_error(dev, err, fmt, ap);  in xenbus_dev_fatal()
350 static void xenbus_switch_fatal(struct xenbus_device *dev, int depth, int err,  in xenbus_switch_fatal()  argument
356 	xenbus_va_dev_error(dev, err, fmt, ap);  in xenbus_switch_fatal()
378 	int err;  in xenbus_grant_ring()  local
384 		err = gnttab_grant_foreign_access(dev->otherend_id,  in xenbus_grant_ring()
386 		if (err < 0) {  in xenbus_grant_ring()
387 			xenbus_dev_fatal(dev, err,  in xenbus_grant_ring()
391 		grefs[i] = err;  in xenbus_grant_ring()
399 	return err;  in xenbus_grant_ring()
413 	int err;  in xenbus_alloc_evtchn()  local
418 	err = HYPERVISOR_event_channel_op(EVTCHNOP_alloc_unbound,  in xenbus_alloc_evtchn()
420 	if (err)  in xenbus_alloc_evtchn()
421 		xenbus_dev_fatal(dev, err, "allocating event channel");  in xenbus_alloc_evtchn()
425 	return err;  in xenbus_alloc_evtchn()
436 	int err;  in xenbus_free_evtchn()  local
440 	err = HYPERVISOR_event_channel_op(EVTCHNOP_close, &close);  in xenbus_free_evtchn()
441 	if (err)  in xenbus_free_evtchn()
442 		xenbus_dev_error(dev, err, "freeing event channel %d", port);  in xenbus_free_evtchn()
444 	return err;  in xenbus_free_evtchn()
485 	int err = GNTST_okay;  in __xenbus_map_ring()  local
501 			err = map[i].status;  in __xenbus_map_ring()
533 	return err;  in __xenbus_map_ring()
545 	int err = GNTST_okay;  in xenbus_map_ring_valloc_pv()  local
567 	err = __xenbus_map_ring(dev, gnt_refs, nr_grefs, node->handles,  in xenbus_map_ring_valloc_pv()
571 	if (err)  in xenbus_map_ring_valloc_pv()
591 	return err;  in xenbus_map_ring_valloc_pv()
601 	int err;  in xenbus_map_ring_valloc_hvm()  local
617 	err = alloc_xenballooned_pages(nr_grefs, node->hvm.pages,  in xenbus_map_ring_valloc_hvm()
619 	if (err)  in xenbus_map_ring_valloc_hvm()
628 	err = __xenbus_map_ring(dev, gnt_ref, nr_grefs, node->handles,  in xenbus_map_ring_valloc_hvm()
632 	if (err)  in xenbus_map_ring_valloc_hvm()
638 		err = -ENOMEM;  in xenbus_map_ring_valloc_hvm()
663 	return err;  in xenbus_map_ring_valloc_hvm()
730 	int err;  in xenbus_unmap_ring_vfree_pv()  local
763 	err = GNTST_okay;  in xenbus_unmap_ring_vfree_pv()
771 			err = unmap[i].status;  in xenbus_unmap_ring_vfree_pv()
783 	return err;  in xenbus_unmap_ring_vfree_pv()
846 	int err;  in xenbus_unmap_ring()  local
858 	err = GNTST_okay;  in xenbus_unmap_ring()
864 			err = unmap[i].status;  in xenbus_unmap_ring()
869 	return err;  in xenbus_unmap_ring()
884 	int err = xenbus_gather(XBT_NIL, path, "state", "%d", &result, NULL);  in xenbus_read_driver_state()  local
885 	if (err)  in xenbus_read_driver_state()