linux-kernel - Re: b43 wireless driver inhibits access to /dev/hwrng

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Message-ID: <20100731061536.GA4945@ucw.cz>
Date:	Sat, 31 Jul 2010 08:15:36 +0200
From:	Pavel Machek <pavel@....cz>
To:	"John W. Linville" <linville@...driver.com>
Cc:	Mario 'BitKoenig' Holbe <Mario.Holbe@...Ilmenau.DE>,
	linux-kernel@...r.kernel.org
Subject: Re: b43 wireless driver inhibits access to /dev/hwrng

On Fri 2010-07-23 10:32:19, John W. Linville wrote:
> On Fri, Jul 23, 2010 at 12:52:12AM +0200, Mario 'BitKoenig' Holbe wrote:
> > Hello,
> > 
> > the b43 wireless driver inhibits access to /dev/hwrng while the wireless
> > network interface is down. When the interface is up, /dev/hwrng is
> > accessible:
> 
> <snip>
> 
> > I have no idea whether this issue belongs to the b43 driver or to the
> > rng core.
> 
> The hwrng driver is provided by the b43 hardware, which is shutdown
> when the network interface is down.  I'm not sure how one could expect
> this to work.

Well... either don't provide hwrng interface, or power up enough of
b43 hardware when user opens /dev/hwrng...?
								Pavel

-- 
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