[PATCH] crypto: fix FTBFS with ARM SHA1-asm and THUMB2_KERNEL

On Mon, 21 Jan 2013, Matt Sealey wrote:

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 <redacted>

A .arm directive at the top of the assembly code would be a better 
"fix", as that wouldn't reduce functionality.

Yet, I'd invite you to have a look at commit 638591cd7b in linux-next.


Nicolas