From 2fa09a9ad7cc4d1dc47c45e12189968d42d69998 Mon Sep 17 00:00:00 2001
From: Adeeb Shihadeh <adeebshihadeh@gmail.com>
Date: Thu, 17 Aug 2023 16:32:23 -0700
Subject: [PATCH] common/gpio: fix warning on re-export (#29457)

---
 common/gpio.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/common/gpio.py b/common/gpio.py
index 5ec23bf7b1..88a9479a60 100644
--- a/common/gpio.py
+++ b/common/gpio.py
@@ -1,3 +1,4 @@
+import os
 from functools import lru_cache
 from typing import Optional, List
 
@@ -26,6 +27,9 @@ def gpio_read(pin: int) -> Optional[bool]:
   return val
 
 def gpio_export(pin: int) -> None:
+  if os.path.isdir(f"/sys/class/gpio/gpio{pin}"):
+    return
+
   try:
     with open("/sys/class/gpio/export", 'w') as f:
       f.write(str(pin))