netdev - Re: [PATCH 2/2] net: fec: reduce spin lock time in fec_ptp

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Message-ID: <20121107083307.GB2267@netboy.at.omicron.at>
Date:	Wed, 7 Nov 2012 09:33:07 +0100
From:	Richard Cochran <richardcochran@...il.com>
To:	Frank Li <Frank.Li@...escale.com>
Cc:	lznuaa@...il.com, shawn.guo@...aro.org,
	linux-arm-kernel@...ts.infradead.or, netdev@...r.kernel.org,
	davem@...emloft.net, bhutchings@...arflare.com
Subject: Re: [PATCH 2/2] net: fec: reduce spin lock time in fec_ptp_adjfreq

On Wed, Nov 07, 2012 at 02:14:49PM +0800, Frank Li wrote:
> move below calculate out of spin lock section
> 	diff = fep->cc.mult;
> 	diff *= ppb;
> 	diff = div_u64(diff, 1000000000ULL);
> 
> diff is local variable and not neccesary in spin lock
> 
> Signed-off-by: Frank Li <Frank.Li@...escale.com>

Acked-by: Richard Cochran <richardcochran@...il.com>
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