linux-kernel - Re: [patch 1/2] hw_random: allow rng_dev

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Date:	Mon, 31 Mar 2008 22:19:43 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Martin Schwidefsky <schwidefsky@...ibm.com>
Cc:	linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-s390@...r.kernel.org, Ralph Wuerthner <rwuerthn@...ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [patch 1/2] hw_random: allow rng_dev_read() to return hardware errors.

On Fri, Mar 14, 2008 at 09:25:24AM +0000, Martin Schwidefsky wrote:
> From: Ralph Wuerthner <rwuerthn@...ibm.com>
> 
> The api for hardware random number generators is currently limited to
> devices that never fail. If the hardware is registered as a source for
> random numbers it has to work. This prevents the use of i/o based
> random number devices where the i/o might fail.
> 
> Add a check for errors after the read from a hardware random number device.
> 
> This patch is required to support large random numbers retrieved
> from the CEX2C cards on System z.
> 
> Signed-off-by: Ralph Wuerthner <rwuerthn@...ibm.com>
> Signed-off-by: Martin Schwidefsky <schwidefsky@...ibm.com>

Thanks for the patch.  I'll pick this up in cryptodev-2.6.

Cheers,
-- 
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Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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