From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Tue, 13 Jan 2015 17:16:39 +0000 (-0700)
Subject: staging: comedi: ni_labpc_isadma: introduce labpc_isadma_disable()
X-Git-Tag: omap-for-v4.1/prcm-dts-mfd-syscon-fix~83^2~381
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0f02b081da44370d5c88340501e7a12ef9076a34;p=pandora-kernel.git

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>
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