netdev - Re: [PATCH 1/13] tg3: Fix 5761 PXEboot crash

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Message-Id: <20071112.210713.95371045.davem@davemloft.net>
Date:	Mon, 12 Nov 2007 21:07:13 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	mcarlson@...adcom.com
Cc:	netdev@...r.kernel.org, andy@...yhouse.net, mchan@...adcom.com
Subject: Re: [PATCH 1/13] tg3: Fix 5761 PXEboot crash

From: "Matt Carlson" <mcarlson@...adcom.com>
Date: Fri, 09 Nov 2007 16:38:37 -0800

> When 5761 devices boot the machine using PXEboot, PXE leaves the device
> active when it terminates.  The tg3 driver has code to detect this
> condition and resets the device during initialization.  On 5761 devices,
> device resets involve sending a driver state update message to the APE
> on the 5761.  However, during this initialization stage, communications
> to the APE registers have not yet been set up.  The driver then
> dereferences a NULL pointer and crashes the machine.  The fix is to move
> the APE register access setup earlier in the initialization code to
> cover this condition.
> 
> Signed-off-by: Matt Carlson <mcarlson@...adcom.com>
> Signed-off-by: Michael Chan <mchan@...adcom.com>

Patch applied.
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