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(parent: 9141c3f) | 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)
commitadb6c25608712504017919164ad3ddea289ab11d
tree58c334b222c6d6fbdfce046ca1605abcf2224adatree | snapshot
parent9141c3f4aa5c7379cdf082d425e5a780dcb1fe30commit | 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 | history
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