From: Joel Fernandes <joelf@ti.com>
Date: Mon, 23 Sep 2013 23:05:15 +0000 (-0500)
Subject: dma: edma: Increase maximum SG limit to 20
X-Git-Tag: v3.13-rc1~29^2~23^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2abd5f1b97fce6e197be01d67a9567c7793c80d3;p=pandora-kernel.git

dma: edma: Increase maximum SG limit to 20

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.

Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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