linux-kernel - Re: [PATCH 3/3] dma: edma: Increase maximum SG limit to 20

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Date:	Mon, 21 Oct 2013 12:56:45 +0530
From:	Vinod Koul <vinod.koul@...el.com>
To:	Joel Fernandes <joelf@...com>
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 3/3] dma: edma: Increase maximum SG limit to 20

On Mon, Sep 23, 2013 at 06:05:15PM -0500, Joel Fernandes wrote:
> davinci-pcm uses 16 as the no.of periods. With this, in EDMA we have to
> allocate atleast 17 slots: 1 slot for channel, and 16 slots the periods.
> 
> Due to this, the MAX_NR_SG limitation causes problems, set it to 20 to make
> cyclic DMA work when davinci-pcm is converted to use DMA Engine. Also add
> a comment clarifying this.

Applied, thanks

--
~Vinod
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