linux-kernel - Re: [PATCH 2/2] crypto: salsa20 use endian access helpers

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Message-ID: <20081217055646.GC14432@gondor.apana.org.au>
Date:	Wed, 17 Dec 2008 16:56:46 +1100
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Harvey Harrison <harvey.harrison@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] crypto: salsa20 use endian access helpers

On Mon, Dec 08, 2008 at 05:26:36PM -0800, Harvey Harrison wrote:
>
> @@ -98,40 +91,51 @@ static void salsa20_wordtobyte(u8 output[64], const u32 input[16])
>  	for (i = 0; i < 16; ++i)
>  		x[i] += input[i];
>  	for (i = 0; i < 16; ++i)
> -		U32TO8_LITTLE(output + 4 * i,x[i]);
> +		store_le32((__le32 *)(output + 4 * i), x[i]);
>  }

We need to mark output (i.e., buf) as aligned in the caller.

Otherwise the patch looks good to me.

Thanks,
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