Subject: [PATCH AUTOSEL 5.2 141/249] ipsec: select crypto ciphers for xfrm_algo

From: Sasha Levin <[email-masked]>
Date: Mon, 15 Jul 2019 09:45:06 -0400

From: Arnd Bergmann <[email-masked]>

[ Upstream commit 597179b0ba550bd83fab1a9d57c42a9343c58514 ]

kernelci.org reports failed builds on arc because of what looks
like an old missed 'select' statement:

net/xfrm/xfrm_algo.o: In function `xfrm_probe_algs':
xfrm_algo.c:(.text+0x1e8): undefined reference to `crypto_has_ahash'

I don't see this in randconfig builds on other architectures, but
it's fairly clear we want to select the hash code for it, like we
do for all its other users. As Herbert points out, CRYPTO_BLKCIPHER
is also required even though it has not popped up in build tests.

Fixes: 17bc19702221 ("ipsec: Use skcipher and ahash when probing algorithms")
Signed-off-by: Arnd Bergmann <[email-masked]>
Acked-by: Herbert Xu <[email-masked]>
Signed-off-by: Steffen Klassert <[email-masked]>
Signed-off-by: Sasha Levin <[email-masked]>
---
 net/xfrm/Kconfig | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/xfrm/Kconfig b/net/xfrm/Kconfig
index c967fc3c38c8..51bb6018f3bf 100644
--- a/net/xfrm/Kconfig
+++ b/net/xfrm/Kconfig
@@ -15,6 +15,8 @@ config XFRM_ALGO
 	tristate
 	select XFRM
 	select CRYPTO
+	select CRYPTO_HASH
+	select CRYPTO_BLKCIPHER
 
 if INET
 config XFRM_USER
-- 
2.20.1