From f96370700ea3c4360edab0a1b50eb944d4d1be72 Mon Sep 17 00:00:00 2001
From: Stuart Ianna <stuart.ianna@motec.com.au>
Date: Tue, 10 Sep 2024 00:56:35 +0000
Subject: [PATCH] arch/risc-v/src/litex/litex_serial: Fix build warning after
 inline spinlock change.

Resolves regression introduced in a4fece3450be99fbca5815558dec9374d4ee04e3.
---
 arch/risc-v/src/litex/litex_serial.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/risc-v/src/litex/litex_serial.c b/arch/risc-v/src/litex/litex_serial.c
index 919ed9faa9..0c8f4024c8 100644
--- a/arch/risc-v/src/litex/litex_serial.c
+++ b/arch/risc-v/src/litex/litex_serial.c
@@ -36,6 +36,7 @@
 #include <nuttx/irq.h>
 #include <nuttx/arch.h>
 #include <nuttx/serial/serial.h>
+#include <nuttx/spinlock.h>
 
 #include <arch/board/board.h>