From eccf114abd8669f872b08efc1226cd747d02dd0c Mon Sep 17 00:00:00 2001
From: Randy Dunlap <rdunlap@infradead.org>
Date: Tue, 19 Sep 2023 22:21:30 -0700
Subject: [PATCH] xtensa: stacktrace: include <asm/ftrace.h> for prototype

[ Upstream commit 1b6ceeb99ee05eb2c62a9e5512623e63cf8490ba ]

Use <asm/ftrace.h> to prevent a build warning:

arch/xtensa/kernel/stacktrace.c:263:15: warning: no previous prototype for 'return_address' [-Wmissing-prototypes]
  263 | unsigned long return_address(unsigned level)

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Message-Id: <20230920052139.10570-8-rdunlap@infradead.org>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Stable-dep-of: 0e60f0b75884 ("xtensa: fix MAKE_PC_FROM_RA second argument")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/xtensa/kernel/stacktrace.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/xtensa/kernel/stacktrace.c b/arch/xtensa/kernel/stacktrace.c
index 7f7755cd28f0..dcba743305ef 100644
--- a/arch/xtensa/kernel/stacktrace.c
+++ b/arch/xtensa/kernel/stacktrace.c
@@ -12,6 +12,7 @@
 #include <linux/sched.h>
 #include <linux/stacktrace.h>
 
+#include <asm/ftrace.h>
 #include <asm/stacktrace.h>
 #include <asm/traps.h>
 #include <linux/uaccess.h>