From: Michael Buesch <mb@bu3sch.de>
To: moreau francis <francis_moreau2000@yahoo.fr>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [HW_RNG] How to use generic rng in kernel space
Date: Tue, 8 Aug 2006 19:34:31 +0200 [thread overview]
Message-ID: <200608081934.31694.mb@bu3sch.de> (raw)
In-Reply-To: <20060808153947.39735.qmail@web25804.mail.ukl.yahoo.com>
On Tuesday 08 August 2006 17:39, moreau francis wrote:
> Michael Buesch wrote:
> > So, if you have a special hwrng on your embedded board and you
> > have some special driver in that board, why not interface
> > directly from the driver to the hwrng-driver?
>
> This is what I'm currently doing. I was just thinking to use the
> new HW-RNG layer and drop common code...
>
> > This is all pretty special case.
> > In the hwrng-driver you could still additionally do a
> > hrwng_register() to export the functionality to
> > userspace, though.
> >
>
> yes I would like to do that but there is a problem: I have no
> access to "rng_mutex" to synchronise hw accesses and I'm
> wondering if there's any issue to use a mutex in driver init
> code.
Use your own mutex or spinlock in the data_read callback
and use that to serialize accesses to the hardware.
--
Greetings Michael.
next prev parent reply other threads:[~2006-08-08 17:35 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-01 12:09 [HW_RNG] How to use generic rng in kernel space moreau francis
2006-08-01 13:29 ` Alan Cox
2006-08-01 13:28 ` Re : " moreau francis
2006-08-01 20:49 ` Michael Buesch
2006-08-04 13:00 ` Re : " moreau francis
2006-08-04 21:08 ` Michael Buesch
2006-08-05 1:44 ` Jeff Garzik
2006-08-08 15:39 ` Re : " moreau francis
2006-08-08 17:34 ` Michael Buesch [this message]
2006-08-09 10:02 ` moreau francis
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