From cad53556a5ea1205927108ddcf9e1f0a5ed971d2 Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@koston.org>
Date: Sun, 12 Nov 2023 18:17:17 -0600
Subject: [PATCH] dashboard: Run get_serial_ports in the executor

get_serial_ports does blocking I/O and should not be running
in tornado event loop
---
 esphome/dashboard/dashboard.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/esphome/dashboard/dashboard.py b/esphome/dashboard/dashboard.py
index 5967c95aba..fc7d772aac 100644
--- a/esphome/dashboard/dashboard.py
+++ b/esphome/dashboard/dashboard.py
@@ -509,8 +509,8 @@ class EsphomeUpdateAllHandler(EsphomeCommandWebSocket):
 
 class SerialPortRequestHandler(BaseHandler):
     @authenticated
-    def get(self):
-        ports = get_serial_ports()
+    async def get(self):
+        ports = await tornado.ioloop.IOLoop.run_in_executor(None, get_serial_ports)
         data = []
         for port in ports:
             desc = port.description