From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Mon, 12 Jan 2015 17:56:13 +0000 (-0700)
Subject: staging: comedi: das16 introduce das16_alloc_dma()
X-Git-Tag: fixes-v4.0-rc1~99^2~403
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7447cd60a3700aa915b45e18afddd338eaaec117;p=pandora-kernel.git

staging: comedi: das16 introduce das16_alloc_dma()

DMA is optional with this driver. Introduce a helper function to request
the DMA channel and allocate the buffers. Don't fail the driver attach
if the user passed an invalid DMA channel or the channel cannot be
requested.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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