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staging: comedi: rti800: swap val and mask when reading ai data

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The (mask & val) operation when reading the high 4-bits of the analog
data looks strange. Change it to (val & mask).

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 2013-04-08 18:21:02 -07:00 • committed by Greg Kroah-Hartman
parent c7c1161dfd
commit aac49c3417
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/comedi/drivers/rti800.c
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@ -217,7 +217,7 @@ static int rti800_ai_insn_read(struct comedi_device *dev,
return ret;
data[i] = inb(dev->iobase + RTI800_ADCLO);
data[i] |= (0xf & inb(dev->iobase + RTI800_ADCHI)) << 8;
data[i] |= (inb(dev->iobase + RTI800_ADCHI) & 0xf) << 8;
if (devpriv->adc_2comp)
data[i] ^= 0x800;