staging: comedi: cb_pcimdas: fix analog input channel configuration

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The hardware uses a switch on the board to set the number of analog
input channels to either 16 single-ended or 8 differential channels.
Currently the switch setting is checked for every (*insn_read) operation
to validate the channel number.

Check the switch setting during the driver attach and initialize the
subdevice accordingly. This allows the core to handle the validation.

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 2015-02-25 16:28:38 -07:00 • committed by Greg Kroah-Hartman

parent bca3a6d182

commit 532a411e8b

1 changed files with 22 additions and 12 deletions

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drivers/staging/comedi/drivers/cb_pcimdas.c

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