linux-kernel - Re: [PATCHv5] dmaengine: Add support for BCM2835

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Date:	Fri, 15 Nov 2013 17:43:37 +0000
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Joe Perches <joe@...ches.com>
Cc:	Florian Meier <florian.meier@...lo.de>,
	Stephen Warren <swarren@...dotorg.org>,
	Vinod Koul <vinod.koul@...el.com>,
	Dan Williams <dan.j.williams@...el.com>,
	devicetree <devicetree@...r.kernel.org>,
	alsa-devel@...a-project.org, Liam Girdwood <lgirdwood@...il.com>,
	linux-kernel@...r.kernel.org, Mark Brown <broonie@...nel.org>,
	linux-rpi-kernel <linux-rpi-kernel@...ts.infradead.org>,
	dmaengine <dmaengine@...r.kernel.org>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCHv5] dmaengine: Add support for BCM2835

On Fri, Nov 15, 2013 at 09:03:36AM -0800, Joe Perches wrote:
> On Fri, 2013-11-15 at 17:28 +0100, Florian Meier wrote:
> > +static size_t bcm2835_dma_desc_size_pos(struct bcm2835_desc *d, dma_addr_t addr)
> > +{
> > +	unsigned i;
> > +	size_t size;
> 
> Please set size to 0 here and not in the for loop
> > +
> > +	for (size = i = 0; i < d->frames; i++) {

I disagree with that comment; I think the above is not only cleaner, but
also more obvious that _this_ loop is calculating _this_ size.
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