linux-kernel - Re: [PATCH v2 5/5] hwrng: amd: Rework of the amd768-hwrng driver

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Message-ID: <20160825145638.GD10637@io.lakedaemon.net>
Date:   Thu, 25 Aug 2016 14:56:38 +0000
From:   Jason Cooper <jason@...edaemon.net>
To:     LABBE Corentin <clabbe.montjoie@...il.com>
Cc:     mpm@...enic.com, herbert@...dor.apana.org.au,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 5/5] hwrng: amd: Rework of the amd768-hwrng driver

Hi Corentin,

On Thu, Aug 25, 2016 at 02:16:35PM +0200, LABBE Corentin wrote:
> This patch convert the hwrng interface used by amd768-rng to its new API
> by replacing data_read()/data_present() by read().
> 
> Furthermore, Instead of having two global variable, it's better to use a
> private struct. This will permit to remove amd_pdev variable.
> 
> Finally, Instead of accessing hw directly via pmbase, it's better to
> access after ioport_map() via ioread32/iowrite32.

I was going to recommend a better $subject line, but now I see why it's
vague. :(  I would recommend breaking this patch up into three:

  hwrng: amd - Access hardware via ioread32/iowrite32
  hwrng: amd - Replace global variable with private struct
  hwrng: amd - Convert to new hwrng read() API

thx,

Jason.