From 88f23b3ba6e94f230eda78adb31e62da131e025c Mon Sep 17 00:00:00 2001
From: Michal Suchanek <msuchanek@suse.de>
Date: Mon, 26 Jul 2021 16:55:21 +0200
Subject: [PATCH] powerpc/stacktrace: Include linux/delay.h

References: bsc#1156395 stable-5.14.6
Patch-mainline: v5.15-rc1
Git-commit: a6cae77f1bc89368a4e2822afcddc45c3062d499

commit 7c6986ade69e ("powerpc/stacktrace: Fix spurious "stale" traces in raise_backtrace_ipi()")
introduces udelay() call without including the linux/delay.h header.
This may happen to work on master but the header that declares the
functionshould be included nonetheless.

Fixes: 7c6986ade69e ("powerpc/stacktrace: Fix spurious "stale" traces in raise_backtrace_ipi()")
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
---
 arch/powerpc/kernel/stacktrace.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/kernel/stacktrace.c b/arch/powerpc/kernel/stacktrace.c
index 2b0d04a1b7d2..a17ac10f86b1 100644
--- a/arch/powerpc/kernel/stacktrace.c
+++ b/arch/powerpc/kernel/stacktrace.c
@@ -12,6 +12,7 @@
 #include <linux/kallsyms.h>
 #include <linux/module.h>
 #include <linux/nmi.h>
+#include <linux/delay.h>
 #include <linux/sched.h>
 #include <linux/sched/debug.h>
 #include <linux/sched/task_stack.h>
-- 
2.26.2