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(parent: 478d69d) | patch
staging: comedi: pcl812: introduce pcl812_alloc_dma()
authorH Hartley Sweeten <hsweeten@visionengravers.com>
Mon, 12 Jan 2015 17:56:05 +0000 (10:56 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 17 Jan 2015 22:25:21 +0000 (14:25 -0800)
commitd70e8b933868b47234356a0598bf7b98d1fc8be9
treea80040cee0caffcc66fc8653f7f6e33632dd162btree | snapshot
parent478d69d95bef423d47d538d9e32e640568c4a2efcommit | diff
staging: comedi: pcl812: introduce pcl812_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>
drivers/staging/comedi/drivers/pcl812.c diff | blob | history
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