linux-kernel - [PATCH] crypto: fix FTBFS with ARM SHA1-asm and THUMB2

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Message-Id: <1358787763-1226-1-git-send-email-matt@genesi-usa.com>
Date:	Mon, 21 Jan 2013 11:02:43 -0600
From:	Matt Sealey <matt@...esi-usa.com>
To:	linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org
Cc:	"David S. Miller" <davem@...emloft.net>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Russell King <linux@....linux.org.uk>,
	linux-arm-kernel@...ts.infradead.org,
	Matt Sealey <matt@...esi-usa.com>
Subject: [PATCH] crypto: fix FTBFS with ARM SHA1-asm and THUMB2_KERNEL

The optimized assembler SHA1 code for ARM does not conform to Thumb2
register usage requirements, so it cannot be built when the kernel is
configured with THUMB2_KERNEL.

Fix the FTBFS for now by preventing misconfigurations of the kernel.

Signed-off-by: Matt Sealey <matt@...esi-usa.com>
---
 crypto/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crypto/Kconfig b/crypto/Kconfig
index 4641d95..304d60b 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -472,7 +472,7 @@ config CRYPTO_SHA1_SPARC64
 
 config CRYPTO_SHA1_ARM
 	tristate "SHA1 digest algorithm (ARM-asm)"
-	depends on ARM
+	depends on ARM && !THUMB2_KERNEL
 	select CRYPTO_SHA1
 	select CRYPTO_HASH
 	help
-- 
1.7.10.4

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