staging: comedi: me_daq: cleanup me_dio_insn_bits()

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This function only needs to update the output channel state when
the 'mask' (data[0]) indicates that the state is changing. It's
also supposed to return the state for all the input and output
channels in data[1].

This function appears to work correctly but it's coded quite
differently form the other comedi drivers. Rework the function so
it follows the normal form. Also, use a couple local variables
for the mmio addresses used to read/write the dio ports.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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H Hartley Sweeten 2012-10-25 15:11:23 -07:00 • committed by Greg Kroah-Hartman

parent 5e177c453f

commit ec6521a204

1 changed files with 26 additions and 19 deletions

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drivers/staging/comedi/drivers/me_daq.c

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