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(parent: d77bf97) | patch
staging: comedi: pcl816: introduce pcl816_isadma_disable()
authorH Hartley Sweeten <hsweeten@visionengravers.com>
Tue, 13 Jan 2015 17:16:23 +0000 (10:16 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 17 Jan 2015 22:31:29 +0000 (14:31 -0800)
commit65fdfedbc06169bc49fbbdab205659237a06568c
tree58c334b222c6d6fbdfce046ca1605abcf2224adatree | snapshot (tar.gz zip)
parentd77bf9736b11671f803e830c5bead436a415d040commit | diff
staging: comedi: pcl816: introduce pcl816_isadma_disable()

According to Documentation/DMA-ISA-LPC.txt, the DMA lock needs to be
claimed before using any of the ISA DMA routines. Introduce a helper
function to disable the ISA DMA controller and add the necessary
locking calls.

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/pcl816.c diff | blob | blame | history