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staging: comedi: cb_das16_cs: fix analog output subdevice init 

The analog output subdevice is only available on the -AO version
of the DAS16/16 device and the number of channels is provided in
the boardinfo. Make sure the subdevice is marked as unused for
devices that do not support the analog out.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten 2012-06-25 17:10:30 -07:00 committed by Greg Kroah-Hartman
parent f87a7e5bf5
commit da7fde2bc9
1 changed files with 2 additions and 0 deletions
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2
drivers/staging/comedi/drivers/cb_das16_cs.c
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@ -509,6 +509,8 @@ static int das16cs_attach(struct comedi_device *dev,
s->range_table = &range_bipolar10;
s->insn_write = &das16cs_ao_winsn;
s->insn_read = &das16cs_ao_rinsn;
} else {
s->type = COMEDI_SUBD_UNUSED;
}
s = dev->subdevices + 2;