From 4f45d62a52297b10ded963412a158685647ecdec Mon Sep 17 00:00:00 2001
From: "George G. Davis" <george_davis@mentor.com>
Date: Mon, 3 Jun 2019 10:30:39 -0400
Subject: [PATCH] scripts/checkstack.pl: Fix arm64 wrong or unknown architecture
Git-commit: 4f45d62a52297b10ded963412a158685647ecdec
Patch-mainline: v5.2-rc4
References: bsc#1051510

The following error occurs for the `make ARCH=arm64 checkstack` case:

aarch64-linux-gnu-objdump -d vmlinux $(find . -name '*.ko') | \
perl ./scripts/checkstack.pl arm64
wrong or unknown architecture "arm64"

As suggested by Masahiro Yamada, fix the above error using regular
expressions in the same way it was fixed for the `ARCH=x86` case via
commit fda9f9903be6 ("scripts/checkstack.pl: automatically handle
32-bit and 64-bit mode for ARCH=x86").

Suggested-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: George G. Davis <george_davis@mentor.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 scripts/checkstack.pl |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/scripts/checkstack.pl
+++ b/scripts/checkstack.pl
@@ -44,7 +44,7 @@ my (@stack, $re, $dre, $x, $xs, $funcre)
 	$x	= "[0-9a-f]";	# hex character
 	$xs	= "[0-9a-f ]";	# hex character or space
 	$funcre = qr/^$x* <(.*)>:$/;
-	if ($arch eq 'aarch64') {
+	if ($arch =~ '^(aarch|arm)64$') {
 		#ffffffc0006325cc:       a9bb7bfd        stp     x29, x30, [sp, #-80]!
 		$re = qr/^.*stp.*sp, \#-([0-9]{1,8})\]\!/o;
 	} elsif ($arch eq 'arm') {