From 5651f2f1d3201a3b5bec9ecd16f418d98a015485 Mon Sep 17 00:00:00 2001
From: Ilnur Valiev <judjingm@gmail.com>
Date: Thu, 30 Jul 2026 12:17:23 +0300
Subject: [PATCH] Fix SPI.end() before initialization

---
 libraries/SPI/SPI.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libraries/SPI/SPI.cpp b/libraries/SPI/SPI.cpp
index 239b77c49..2d1fa0651 100644
--- a/libraries/SPI/SPI.cpp
+++ b/libraries/SPI/SPI.cpp
@@ -166,6 +166,9 @@ void ArduinoSPI::begin()
 
 void ArduinoSPI::end()
 {
+  if (!_is_initialized) {
+    return;
+  }
   if (_is_sci) {
     _close(&_spi_sci_ctrl);
   } else {