openwrt/target/linux/generic/hack-4.14/260-crypto_test_dependencies.patch

From fd1799b0bf5efa46dd3e6dfbbf3955564807e508 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@nbd.name>
Date: Fri, 7 Jul 2017 17:12:51 +0200
Subject: kernel: prevent cryptomgr from pulling in useless extra dependencies for tests that are not run

Reduces kernel size after LZMA by about 5k on MIPS

lede-commit: 044c316167e076479a344c59905e5b435b84a77f
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
 crypto/Kconfig   | 13 ++++++-------
 crypto/algboss.c |  4 ++++
 2 files changed, 10 insertions(+), 7 deletions(-)

--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -143,13 +143,13 @@ config CRYPTO_MANAGER
 	  cbc(aes).
 
 config CRYPTO_MANAGER2
-	def_tristate CRYPTO_MANAGER || (CRYPTO_MANAGER!=n && CRYPTO_ALGAPI=y)
-	select CRYPTO_AEAD2
-	select CRYPTO_HASH2
-	select CRYPTO_BLKCIPHER2
-	select CRYPTO_AKCIPHER2
-	select CRYPTO_KPP2
-	select CRYPTO_ACOMP2
+	def_tristate CRYPTO_MANAGER || (CRYPTO_MANAGER!=n && CRYPTO_ALGAPI=y && !CRYPTO_MANAGER_DISABLE_TESTS)
+	select CRYPTO_AEAD2 if !CRYPTO_MANAGER_DISABLE_TESTS
+	select CRYPTO_HASH2 if !CRYPTO_MANAGER_DISABLE_TESTS
+	select CRYPTO_BLKCIPHER2 if !CRYPTO_MANAGER_DISABLE_TESTS
+	select CRYPTO_AKCIPHER2 if !CRYPTO_MANAGER_DISABLE_TESTS
+	select CRYPTO_KPP2 if !CRYPTO_MANAGER_DISABLE_TESTS
+	select CRYPTO_ACOMP2 if !CRYPTO_MANAGER_DISABLE_TESTS
 
 config CRYPTO_USER
 	tristate "Userspace cryptographic algorithm configuration"
@@ -162,7 +162,6 @@ config CRYPTO_USER
 config CRYPTO_MANAGER_DISABLE_TESTS
 	bool "Disable run-time self tests"
 	default y
-	depends on CRYPTO_MANAGER2
 	help
 	  Disable run-time self tests that normally take place at
 	  algorithm registration.
--- a/crypto/algboss.c
+++ b/crypto/algboss.c
@@ -246,8 +246,12 @@ static int cryptomgr_schedule_test(struc
 	type = alg->cra_flags;
 
 	/* Do not test internal algorithms. */
+#ifdef CONFIG_CRYPTO_MANAGER_DISABLE_TESTS
+	type |= CRYPTO_ALG_TESTED;
+#else
 	if (type & CRYPTO_ALG_INTERNAL)
 		type |= CRYPTO_ALG_TESTED;
+#endif
 
 	param->type = type;