linux-kernel - Re: [PATCH 2/3] dma: edma: Add support for Cyclic DMA

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Message-ID: <20131024163829.GA21230@intel.com>
Date:	Thu, 24 Oct 2013 22:08:29 +0530
From:	Vinod Koul <vinod.koul@...el.com>
To:	Joel Fernandes <joelf@...com>, dmaengine@...r.kernel.org
Cc:	Matt Porter <matt@...orter.com>, Mark Brown <broonie@...aro.org>,
	Russell King <linux@....linux.org.uk>,
	Dan Williams <djbw@...com>, Jyri Sarha <jsarha@...com>,
	Lars Peter-Clausen <lars@...afoo.de>,
	Linux OMAP List <linux-omap@...r.kernel.org>,
	Linux ARM Kernel List <linux-arm-kernel@...ts.infradead.org>,
	Linux DaVinci Kernel List 
	<davinci-linux-open-source@...ux.davincidsp.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	alsa-devel@...a-project.org
Subject: Re: [PATCH 2/3] dma: edma: Add support for Cyclic DMA

On Tue, Oct 22, 2013 at 10:30:43AM -0500, Joel Fernandes wrote:
> On 10/21/2013 01:53 AM, Vinod Koul wrote:
> > On Mon, Sep 23, 2013 at 06:05:14PM -0500, Joel Fernandes wrote:
> >> +	nr_periods = (buf_len / period_len) + 1;
> > ?
> > 
> > consider the case of buf = period_len, above makes nr_period = 2.
> > 
> > Or buf len 100, period len 50, makes nr_period = 3
> > 
> > Both doesnt seem right to me?
> 
> I guess that variable name is misleading.
> 
> nr_periods is actually the total no.of slots needed to process the request. Its
> value is 1 greater than the total number of periods.
Okay sounds good to me. I tried applying below but looks like it fails as I have
already applied, 1 & 3. Can you pls rebase this resend

--
~Vinod
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