netdev - Re: [PATCH][NET] several cleanups and bugfixes for fec.c: don't munge MAC address from platform data

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Message-ID: <20111207091441.GF5550@S2100-06.ap.freescale.net>
Date:	Wed, 7 Dec 2011 17:14:42 +0800
From:	Shawn Guo <shawn.guo@...escale.com>
To:	Lothar Waßmann <LW@...O-electronics.de>
CC:	<netdev@...r.kernel.org>, Shawn Guo <shawn.guo@...aro.org>,
	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH][NET] several cleanups and bugfixes for fec.c: don't
 munge MAC address from platform data

On Wed, Dec 07, 2011 at 09:47:37AM +0100, Lothar Waßmann wrote:
> Hi,
> 
> Shawn Guo writes:
> > On Tue, Dec 06, 2011 at 11:27:13AM +0100, Lothar Waßmann wrote:
> > > When the MAC address is supplied via platform_data it should be OK as
> > > it is and should not be modified in case of a dual FEC setup.
> > > Also copying the MAC from platform_data to the single 'macaddr'
> > > variable will overwrite the MAC for the first interface in case of a
> > > dual FEC setup.
> > 
> > Hmm, I do not follow that.  If 'macaddr' holds a valid mac address,
> > the code path has no chance to be hit at all.  Otherwise, 'macaddr'
> > is just a place holder for copying mac address from pdata, in which
> > case the mac address will be fixed up at the end of the function for
> > dual FEC setup.
> > 
> In case of dual FEC and MAC address provided by platform_data the
> first mac address will be copied to the 'macaddr' variable with no
> chance for the second interface to get its mac address assigned from
> platform_data too.
> 
Indeed.  So again other than subject,

Acked-by: Shawn Guo <shawn.guo@...aro.org>

-- 
Regards,
Shawn

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