From 611dbb6d22ae33be3075623ed18da57729f7d108 Mon Sep 17 00:00:00 2001
From: Masayuki Ishikawa <masayuki.ishikawa@gmail.com>
Date: Tue, 9 Feb 2021 13:07:03 +0900
Subject: [PATCH] include: nuttx: Introduce spinlock_t for #ifndef
 CONFIG_SPINLOCK

Summary:
- This commit introduces spinlock_t for #ifndef CONFIG_SPINLOCK
  which is useful for the non-SMP case because it does not consume
  memory

Impact:
- None:

Testing:
- N/A

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
---
 include/nuttx/spinlock.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/nuttx/spinlock.h b/include/nuttx/spinlock.h
index aadf26b50e3..74e1714fbe4 100644
--- a/include/nuttx/spinlock.h
+++ b/include/nuttx/spinlock.h
@@ -30,7 +30,11 @@
 #include <sys/types.h>
 #include <stdint.h>
 
-#ifdef CONFIG_SPINLOCK
+#ifndef CONFIG_SPINLOCK
+typedef struct
+{
+} spinlock_t;
+#else
 
 /* The architecture specific spinlock.h header file must also provide the
  * following: