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(parent: 38a7d49) | patch
staging: comedi: das16 introduce das16_alloc_dma()
authorH Hartley Sweeten <hsweeten@visionengravers.com>
Mon, 12 Jan 2015 17:56:13 +0000 (10:56 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 17 Jan 2015 22:25:22 +0000 (14:25 -0800)
commit7447cd60a3700aa915b45e18afddd338eaaec117
tree8e4c4c5c28b44b9c3c2024631bba40d3153c664ftree | snapshot
parent38a7d4999a68af0c18216279971fa7acd8ec7345commit | diff
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>
drivers/staging/comedi/drivers/das16.c diff | blob | history
Domain: System / Kernel;