diff options
| -rw-r--r-- | drivers/staging/comedi/drivers/ni_660x.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/drivers/staging/comedi/drivers/ni_660x.c b/drivers/staging/comedi/drivers/ni_660x.c index 40402c14ba93..df42e3906171 100644 --- a/drivers/staging/comedi/drivers/ni_660x.c +++ b/drivers/staging/comedi/drivers/ni_660x.c @@ -767,17 +767,20 @@ static int ni_660x_cancel(struct comedi_device *dev, struct comedi_subdevice *s) return retval; } -static void set_tio_counterswap(struct comedi_device *dev, int chipset) +static void set_tio_counterswap(struct comedi_device *dev, int chip) { - /* See P. 3.5 of the Register-Level Programming manual. The - CounterSwap bit has to be set on the second chip, otherwise - it will try to use the same pins as the first chip. + unsigned bits = 0; + + /* + * See P. 3.5 of the Register-Level Programming manual. + * The CounterSwap bit has to be set on the second chip, + * otherwise it will try to use the same pins as the + * first chip. */ - if (chipset) - ni_660x_write_register(dev, chipset, CounterSwap, - NI660X_CLK_CFG); - else - ni_660x_write_register(dev, chipset, 0, NI660X_CLK_CFG); + if (chip) + bits = CounterSwap; + + ni_660x_write_register(dev, chip, bits, NI660X_CLK_CFG); } static void ni_660x_handle_gpct_interrupt(struct comedi_device *dev, |