linux-kernel - Re: Intel RNG: firmware hub changes in 2.6.19 break 82802 detection on Core2 Duo MacBook Pro

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Date:	Mon, 13 Nov 2006 14:12:05 -0500
From:	jhf@...umbus.rr.com (Joseph Fannin)
To:	Julien BLACHE <jb@...ache.org>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>, jgarzik@...ox.com
Subject: Re: Intel RNG: firmware hub changes in 2.6.19 break 82802 detection on Core2 Duo MacBook Pro

On Sun, Nov 12, 2006 at 11:33:52AM +0100, Julien BLACHE wrote:
> Hi,
>
> On a new Core2 Duo MacBook Pro, 2.6.19-rc5 fails to detect the 82802
> RNG with this message:
>
>  intel_rng: FWH not detected
>
> Though it worked in 2.6.18:
>
>  Intel 82802 RNG detected
>
>
> This is an x86_64 kernel booted via good old lilo, so using the
> BootCamp BIOS emulation provided by Apple.

    The intel_rng driver recently changed the way it detected the RNG,
because it got a lot of false positives.

    I have the older Core Duo MacBook, and there is no RNG here,
though it used to be detected.  rngd would disable it immediately when
I tried to use it.

--
Joseph Fannin
jfannin@...il.com || jhf@...umbus.rr.com


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