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staging: comedi: dt9812: default the analog input gain to 1

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The 'default' case should never happen. In case it does, default the
gain to '1'.

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>
This commit is contained in:
H Hartley Sweeten 2013-05-14 14:35:47 -07:00 committed by Greg Kroah-Hartman
parent 548c278c6c
commit d6caedf074
1 changed files with 2 additions and 3 deletions
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5
drivers/staging/comedi/drivers/dt9812.c
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@ -422,6 +422,8 @@ static void dt9812_configure_gain(struct comedi_device *dev,
rmw->or_value = F020_MASK_ADC0CF_AMP0GN2 |
F020_MASK_ADC0CF_AMP0GN1;
break;
default:
/* this should never happen, just use a gain of 1 */
case DT9812_GAIN_1:
rmw->or_value = 0x00;
break;
@ -438,9 +440,6 @@ static void dt9812_configure_gain(struct comedi_device *dev,
case DT9812_GAIN_16:
rmw->or_value = F020_MASK_ADC0CF_AMP0GN2;
break;
default:
dev_err(dev->class_dev, "Illegal gain %d\n", gain);
break;
}
}