staging: comedi: me4000: remove 'board' from me4000_ai_check_chanlist()

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The maximum differential channel is half the subdevice 'n_chan'. Use
that instead and remove the need for the 'board' variable.

Also, the comedi core does no validate the aref flags. Add a check
to ensure that the subdevice actually supports the AREF_DIFF mode.

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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H Hartley Sweeten 2015-08-05 10:44:43 -07:00 • committed by Greg Kroah-Hartman

parent 1a02387063

commit 4ec85dadb7

1 changed files with 7 additions and 3 deletions

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drivers/staging/comedi/drivers/me4000.c

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