staging: comedi: icp_multi: correct insn_bits returned data for DO

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For some unfathomable reason, the Comedi `insn_bits` handler for the
digital output subdevice (`icp_multi_insn_bits_do()`) writes the digital
output register and reads back the unrelated digital input register.
Read back the current state of the outputs (held in `s->state`) instead.

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

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Ian Abbott 2014-10-31 14:32:27 +00:00 • committed by Greg Kroah-Hartman

parent c234566f77

commit cf5d2af683

1 changed files with 2 additions and 2 deletions

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drivers/staging/comedi/drivers/icp_multi.c

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