Remove confusing warning for TTS without entity_id (#21927)

homeassistant/components/tts/__init__.py

@@ -22,7 +22,7 @@ from homeassistant.components.media_player.const import (
     ATTR_MEDIA_CONTENT_ID, ATTR_MEDIA_CONTENT_TYPE, MEDIA_TYPE_MUSIC,
     SERVICE_PLAY_MEDIA)
 from homeassistant.components.media_player.const import DOMAIN as DOMAIN_MP
-from homeassistant.const import ATTR_ENTITY_ID
+from homeassistant.const import ATTR_ENTITY_ID, ENTITY_MATCH_ALL
 from homeassistant.core import callback
 from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers import config_per_platform
@@ -126,7 +126,7 @@ async def async_setup(hass, config):
 
         async def async_say_handle(service):
             """Service handle for say."""
-            entity_ids = service.data.get(ATTR_ENTITY_ID)
+            entity_ids = service.data.get(ATTR_ENTITY_ID, ENTITY_MATCH_ALL)
             message = service.data.get(ATTR_MESSAGE)
             cache = service.data.get(ATTR_CACHE)
             language = service.data.get(ATTR_LANGUAGE)
@@ -144,11 +144,9 @@ async def async_setup(hass, config):
             data = {
                 ATTR_MEDIA_CONTENT_ID: url,
                 ATTR_MEDIA_CONTENT_TYPE: MEDIA_TYPE_MUSIC,
+                ATTR_ENTITY_ID: entity_ids,
             }
 
-            if entity_ids:
-                data[ATTR_ENTITY_ID] = entity_ids
-
             await hass.services.async_call(
                 DOMAIN_MP, SERVICE_PLAY_MEDIA, data, blocking=True)