xtensa: stacktrace: include <asm/ftrace.h> for prototype

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>

diff --git a/arch/xtensa/kernel/stacktrace.c b/arch/xtensa/kernel/stacktrace.c
index f643ea5e36dab50fd21fad55706118785247837a..831ffb648bda7e160408fd97530eddee760c27fc 100644 (file)
--- 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>