From f41c421482002ee4f395918b88f77d4b50305aee Mon Sep 17 00:00:00 2001
From: Szymon Janc <szymon.janc@codecoup.pl>
Date: Thu, 21 May 2026 14:02:36 +0200
Subject: [PATCH] kernel/os: Check if CONTAINER_OF is already defined

Check if CONTAINER_OF is already defined before defining in the OS.
This is quite common macro name and may cause macro redefine error
otherwise.
---
 kernel/os/include/os/util.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/os/include/os/util.h b/kernel/os/include/os/util.h
index 3e59670c4e..f272a0a342 100644
--- a/kernel/os/include/os/util.h
+++ b/kernel/os/include/os/util.h
@@ -27,8 +27,10 @@
 #define INT_TO_POINTER(u) ((void *) ((intptr_t) (u)))
 
 /* Helper to retrieve pointer to "parent" object in structure */
+#ifndef CONTAINER_OF
 #define CONTAINER_OF(ptr, type, field) \
         ((type *)(((char *)(ptr)) - offsetof(type, field)))
+#endif
 
 /* Helper to calculate number of elements in array */
 #ifndef ARRAY_SIZE