netdev - Re: [net-2.6 PATCH 5/5] e1000e: allow for swflag to be held over consecutive PHY accesses

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Message-Id: <20091026.161727.75083296.davem@davemloft.net>
Date:	Mon, 26 Oct 2009 16:17:27 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jeffrey.t.kirsher@...el.com
Cc:	netdev@...r.kernel.org, gospo@...hat.com, bruce.w.allan@...el.com
Subject: Re: [net-2.6 PATCH 5/5] e1000e: allow for swflag to be held over
 consecutive PHY accesses

From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Date: Mon, 26 Oct 2009 14:24:02 -0700

> From: Bruce Allan <bruce.w.allan@...el.com>
> 
> PCH-based parts (82577/82578) and some ICH8-based parts (82566) need to
> hold the swflag (sw/fw/hw hardware semaphore) over consecutive PHY accesses
> in order to perform sw-driven PHY configuration during initialization to
> workaround known hardware issues (see follow-on patch).  This patch
> provides new PHY read/write functions (and function pointers) that will
> allow accessing the PHY registers assuming the swflag has already been
> acquired.  The actual PHY register access code has moved into helper
> functions that are called with a flag indicating whether or not the swflag
> has already been acquired and acquires/releases it if not.
> 
> The functions called from within the updated PHY access functions had to be
> updated to assume the swflag was already acquired, and other functions that
> called those functions were also updated to acquire/release the swflag.
> 
> Signed-off-by: Bruce Allan <bruce.w.allan@...el.com>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>

Applied.
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