From fdcc0072ddc6620061f5a3f4ece09f65ac77200d Mon Sep 17 00:00:00 2001
From: Sage Weil <sage@redhat.com>
Date: Tue, 2 Jun 2015 14:33:36 -0700
Subject: [PATCH] arm: fix build on older kernels

that don't define HWCAP_CRC32

Fixes: #11461
Signed-off-by: Sage Weil <sage@redhat.com>
---
 src/arch/arm.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/arch/arm.c b/src/arch/arm.c
index 5a47e33492351..3560eb7b6738f 100644
--- a/src/arch/arm.c
+++ b/src/arch/arm.c
@@ -48,7 +48,11 @@ int ceph_arch_arm_probe(void)
 	ceph_arch_neon = (get_hwcap() & HWCAP_NEON) == HWCAP_NEON;
 #elif __aarch64__ && __linux__
 	ceph_arch_neon = (get_hwcap() & HWCAP_ASIMD) == HWCAP_ASIMD;
+# ifdef HWCAP_CRC32
 	ceph_arch_aarch64_crc32 = (get_hwcap() & HWCAP_CRC32) == HWCAP_CRC32;
+# else
+	ceph_arch_aarch64_crc32 = false;  // sorry!
+# endif
 #else
 	if (0)
 		get_hwcap();  // make compiler shut up
-- 
2.39.5