From: Neal Liu <neal.liu@mediatek.com>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Stephan Mueller <smueller@chronox.de>,
mpm@selenic.com, robh+dt@kernel.org, mark.rutland@arm.com,
matthias.bgg@gmail.com, wsd_upstream@mediatek.com,
linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org, linux-mediatek@lists.infradead.org,
Crystal.Guo@mediatek.com
Subject: Re: [PATCH 3/3] hwrng: add mt67xx-rng driver
Date: Thu, 9 May 2019 22:54:46 +0800 [thread overview]
Message-ID: <1557413686.23445.6.camel@mtkswgap22> (raw)
In-Reply-To: <20190509052649.xfkgb3qd7rhcgktj@gondor.apana.org.au>
On Thu, 2019-05-09 at 13:26 +0800, Herbert Xu wrote:
> On Wed, May 08, 2019 at 06:35:37PM +0800, Neal Liu wrote:
> > Hi Stephan,
> > We think the cast is fine, and it cannot guarantee the buf is
> > word-align.
> > I reference multiple rng driver's implementation and found it's common
> > usage for this. So it might be general usage for community. Is there any
> > suggestion that is more appropriate?
>
> If you don't know whether it's unaligned or not then you should
> do an unaligned operation.
Hi Stephan/Herbert,
My mistake. This buffer is allocated by kmalloc with larger than 32
bytes. So yes, it's word-align for sure.
reference:
https://elixir.bootlin.com/linux/latest/source/drivers/char/hw_random/core.c#L590
Thanks
Best Regards,
-Neal Liu
next prev parent reply other threads:[~2019-05-09 14:54 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-08 3:58 [PATCH 0/3] MT67XX random number generator support neal.liu
2019-05-08 3:58 ` [PATCH 1/3] soc: mediatek: add SMC fid table for SIP interface neal.liu
2019-05-08 3:58 ` [PATCH 2/3] dt-bindings: rng: update bindings for MT67xx SoCs neal.liu
2019-05-08 3:58 ` [PATCH 3/3] hwrng: add mt67xx-rng driver neal.liu
[not found] ` <1557287937-2410-4-git-send-email-neal.liu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2019-05-08 6:34 ` Stephan Mueller
2019-05-08 10:35 ` Neal Liu
2019-05-09 5:26 ` Herbert Xu
2019-05-09 14:54 ` Neal Liu [this message]
2019-05-10 6:39 ` Herbert Xu
2019-05-24 7:42 ` Neal Liu
2019-05-24 12:55 ` Herbert Xu
2019-05-24 19:00 ` Sean Wang
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