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 <[email protected]> Cc: Ian Abbott <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> --- drivers/staging/comedi/drivers/rti800.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/comedi/drivers/rti800.c b/drivers/staging/comedi/drivers/rti800.c index d788c19..0084038 100644 --- a/drivers/staging/comedi/drivers/rti800.c +++ b/drivers/staging/comedi/drivers/rti800.c @@ -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; -- 1.8.1.4 _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
