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staging: comedi: ni_labpc_isadma: introduce labpc_isadma_disable()
authorH Hartley Sweeten <hsweeten@visionengravers.com>
Tue, 13 Jan 2015 17:16:39 +0000 (10:16 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 17 Jan 2015 22:31:31 +0000 (14:31 -0800)
commit0f02b081da44370d5c88340501e7a12ef9076a34
tree80cecce79c83e379c3a943de0bf4400656cfd6e9tree | snapshot (tar.gz zip)
parentafd8f40f6f10bb43c445458a36b873add4dd08f3commit | diff
staging: comedi: ni_labpc_isadma: introduce labpc_isadma_disable()

Introduce a helper function to disable and the ISA DMA controller and
return the residue as described in Documentation/DMA-ISA-LPC.txt.

The DMA will always be disabled when labpc_setup_dma() is called. Remove
the unnecessary disable in that function.

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/ni_labpc_isadma.c diff | blob | blame | history