Merge commit 'e45b83411' into anoa/dinsic_release_1_21_x

* commit 'e45b83411':
  Add types to async_helpers (#8260)
  Fix mypy error on develop (#8282)
  Include method in thumbnail media name (#7124)
  Add types to StreamToken and RoomStreamToken (#8279)
  Add a config option for validating 'next_link' parameters against a domain whitelist (#8275)
  Clean up types for PaginationConfig (#8250)
  Use the right constructor for log records (#8278)
  Fix `MultiWriterIdGenerator.current_position`. (#8257)

1 files changed, 3 insertions, 2 deletions

diff --git a/synapse/notifier.py b/synapse/notifier.py

index b7f4041306..71f2370874 100644
--- a/synapse/notifier.py
+++ b/synapse/notifier.py
@@ -432,8 +432,9 @@ class Notifier:
         If explicit_room_id is set, that room will be polled for events only if
         it is world readable or the user has joined the room.
         """
-        from_token = pagination_config.from_token
-        if not from_token:
+        if pagination_config.from_token:
+            from_token = pagination_config.from_token
+        else:
             from_token = self.event_sources.get_current_token()
 
         limit = pagination_config.limit