delayed_gcode: make UPDATE_DELAYED_GCODE safe for klippy:ready handlers

When another klippy:ready handler executes UPDATE_DELAYED_GCODE before DelayedGcode's ready handler runs, then self.timer_handler is None, causing update_timer() to fail. Signed-off-by: Rolf Schäuble <[email protected]>
Klipper3d · Jul 2, 2024 · 59ab129 · 59ab129
1 parent 4d21ffc
commit 59ab129
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/klippy/extras/delayed_gcode.py b/klippy/extras/delayed_gcode.py
@@ -44,7 +44,9 @@ def cmd_UPDATE_DELAYED_GCODE(self, gcmd):
         self.duration = gcmd.get_float('DURATION', minval=0.)
         if self.inside_timer:
             self.repeat = (self.duration != 0.)
-        else:
+        elif self.timer_handler is not None:
+            # Update the timer if it has already been created. A klippy:ready
+            # handler might call this method before that happened.
             waketime = self.reactor.NEVER
             if self.duration:
                 waketime = self.reactor.monotonic() + self.duration