2 files changed, 9 insertions, 3 deletions
diff --git a/synapse/push/__init__.py b/synapse/push/__init__.py
index ac99d35a7e..a0c760239d 100644
--- a/synapse/push/__init__.py
+++ b/synapse/push/__init__.py
@@ -117,6 +117,7 @@ class PusherConfig:
     last_success: Optional[int]
     failing_since: Optional[int]
     enabled: bool
+    device_id: Optional[str]
 
     def as_dict(self) -> Dict[str, Any]:
         """Information that can be retrieved about a pusher after creation."""
@@ -130,6 +131,7 @@ class PusherConfig:
             "profile_tag": self.profile_tag,
             "pushkey": self.pushkey,
             "enabled": self.enabled,
+            "device_id": self.device_id,
         }
 
 
diff --git a/synapse/push/pusherpool.py b/synapse/push/pusherpool.py
index 2597898cf4..e2648cbc93 100644
--- a/synapse/push/pusherpool.py
+++ b/synapse/push/pusherpool.py
@@ -107,6 +107,7 @@ class PusherPool:
         data: JsonDict,
         profile_tag: str = "",
         enabled: bool = True,
+        device_id: Optional[str] = None,
     ) -> Optional[Pusher]:
         """Creates a new pusher and adds it to the pool
 
@@ -149,18 +150,20 @@ class PusherPool:
                 last_success=None,
                 failing_since=None,
                 enabled=enabled,
+                device_id=device_id,
             )
         )
 
         # Before we actually persist the pusher, we check if the user already has one
-        # for this app ID and pushkey. If so, we want to keep the access token in place,
-        # since this could be one device modifying (e.g. enabling/disabling) another
-        # device's pusher.
+        # this app ID and pushkey. If so, we want to keep the access token and device ID
+        # in place, since this could be one device modifying (e.g. enabling/disabling)
+        # another device's pusher.
         existing_config = await self._get_pusher_config_for_user_by_app_id_and_pushkey(
             user_id, app_id, pushkey
         )
         if existing_config:
             access_token = existing_config.access_token
+            device_id = existing_config.device_id
 
         await self.store.add_pusher(
             user_id=user_id,
@@ -176,6 +179,7 @@ class PusherPool:
             last_stream_ordering=last_stream_ordering,
             profile_tag=profile_tag,
             enabled=enabled,
+            device_id=device_id,
         )
         pusher = await self.process_pusher_change_by_id(app_id, pushkey, user_id)