120 	int err;  in xenbus_watch_path()  local
125 	err = register_xenbus_watch(watch);  in xenbus_watch_path()
127 	if (err) {  in xenbus_watch_path()
130 		xenbus_dev_fatal(dev, err, "adding watch on %s", path);  in xenbus_watch_path()
133 	return err;  in xenbus_watch_path()
159 	int err;  in xenbus_watch_pathfmt()  local
171 	err = xenbus_watch_path(dev, path, watch, callback);  in xenbus_watch_pathfmt()
173 	if (err)  in xenbus_watch_pathfmt()
175 	return err;  in xenbus_watch_pathfmt()
201 	int err, abort;  in __xenbus_switch_state()  local
209 	err = xenbus_transaction_start(&xbt);  in __xenbus_switch_state()
210 	if (err) {  in __xenbus_switch_state()
211 		xenbus_switch_fatal(dev, depth, err, "starting transaction");  in __xenbus_switch_state()
215 	err = xenbus_scanf(xbt, dev->nodename, "state", "%d", &current_state);  in __xenbus_switch_state()
216 	if (err != 1)  in __xenbus_switch_state()
219 	err = xenbus_printf(xbt, dev->nodename, "state", "%d", state);  in __xenbus_switch_state()
220 	if (err) {  in __xenbus_switch_state()
221 		xenbus_switch_fatal(dev, depth, err, "writing new state");  in __xenbus_switch_state()
227 	err = xenbus_transaction_end(xbt, abort);  in __xenbus_switch_state()
228 	if (err) {  in __xenbus_switch_state()
229 		if (err == -EAGAIN && !abort)  in __xenbus_switch_state()
231 		xenbus_switch_fatal(dev, depth, err, "ending transaction");  in __xenbus_switch_state()
272 static void xenbus_va_dev_error(struct xenbus_device *dev, int err,  in xenbus_va_dev_error()  argument
284 	len = sprintf(printf_buffer, "%i ", -err);  in xenbus_va_dev_error()
318 void xenbus_dev_error(struct xenbus_device *dev, int err, const char *fmt, ...)  in xenbus_dev_error()  argument
323 	xenbus_va_dev_error(dev, err, fmt, ap);  in xenbus_dev_error()
339 void xenbus_dev_fatal(struct xenbus_device *dev, int err, const char *fmt, ...)  in xenbus_dev_fatal()  argument
344 	xenbus_va_dev_error(dev, err, fmt, ap);  in xenbus_dev_fatal()
355 static void xenbus_switch_fatal(struct xenbus_device *dev, int depth, int err,  in xenbus_switch_fatal()  argument
361 	xenbus_va_dev_error(dev, err, fmt, ap);  in xenbus_switch_fatal()
383 	int err;  in xenbus_grant_ring()  local
387 		err = gnttab_grant_foreign_access(dev->otherend_id,  in xenbus_grant_ring()
389 		if (err < 0) {  in xenbus_grant_ring()
390 			xenbus_dev_fatal(dev, err,  in xenbus_grant_ring()
394 		grefs[i] = err;  in xenbus_grant_ring()
404 	return err;  in xenbus_grant_ring()
418 	int err;  in xenbus_alloc_evtchn()  local
423 	err = HYPERVISOR_event_channel_op(EVTCHNOP_alloc_unbound,  in xenbus_alloc_evtchn()
425 	if (err)  in xenbus_alloc_evtchn()
426 		xenbus_dev_fatal(dev, err, "allocating event channel");  in xenbus_alloc_evtchn()
430 	return err;  in xenbus_alloc_evtchn()
441 	int err;  in xenbus_free_evtchn()  local
445 	err = HYPERVISOR_event_channel_op(EVTCHNOP_close, &close);  in xenbus_free_evtchn()
446 	if (err)  in xenbus_free_evtchn()
447 		xenbus_dev_error(dev, err, "freeing event channel %d", port);  in xenbus_free_evtchn()
449 	return err;  in xenbus_free_evtchn()
490 	int err = GNTST_okay;  in __xenbus_map_ring()  local
506 			err = map[i].status;  in __xenbus_map_ring()
538 	return err;  in __xenbus_map_ring()
550 	int err = GNTST_okay;  in xenbus_map_ring_valloc_pv()  local
572 	err = __xenbus_map_ring(dev, gnt_refs, nr_grefs, node->handles,  in xenbus_map_ring_valloc_pv()
576 	if (err)  in xenbus_map_ring_valloc_pv()
596 	return err;  in xenbus_map_ring_valloc_pv()
628 	int err;  in xenbus_map_ring_valloc_hvm()  local
645 	err = alloc_xenballooned_pages(nr_pages, node->hvm.pages);  in xenbus_map_ring_valloc_hvm()
646 	if (err)  in xenbus_map_ring_valloc_hvm()
653 	err = __xenbus_map_ring(dev, gnt_ref, nr_grefs, node->handles,  in xenbus_map_ring_valloc_hvm()
657 	if (err)  in xenbus_map_ring_valloc_hvm()
663 		err = -ENOMEM;  in xenbus_map_ring_valloc_hvm()
687 	return err;  in xenbus_map_ring_valloc_hvm()
754 	int err;  in xenbus_unmap_ring_vfree_pv()  local
787 	err = GNTST_okay;  in xenbus_unmap_ring_vfree_pv()
795 			err = unmap[i].status;  in xenbus_unmap_ring_vfree_pv()
807 	return err;  in xenbus_unmap_ring_vfree_pv()
892 	int err;  in xenbus_unmap_ring()  local
904 	err = GNTST_okay;  in xenbus_unmap_ring()
910 			err = unmap[i].status;  in xenbus_unmap_ring()
915 	return err;  in xenbus_unmap_ring()
930 	int err = xenbus_gather(XBT_NIL, path, "state", "%d", &result, NULL);  in xenbus_read_driver_state()  local
931 	if (err)  in xenbus_read_driver_state()