The addition operation has higher precedence than ?: so this would write to PCI230_DACOUT1 instead of devpriv->daqio + PCI230_DACOUT1. Fixes: 4f9c63fe5333 ('staging: comedi: amplc_pci230: refactor iobase addresses') Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> diff --git a/drivers/staging/comedi/drivers/amplc_pci230.c b/drivers/staging/comedi/drivers/amplc_pci230.c index 0fd212f..60d21e0 100644 --- a/drivers/staging/comedi/drivers/amplc_pci230.c +++ b/drivers/staging/comedi/drivers/amplc_pci230.c @@ -628,7 +628,7 @@ static inline void pci230_ao_write_nofifo(struct comedi_device *dev, /* Write mangled datum to appropriate DACOUT register. */ outw(pci230_ao_mangle_datum(dev, datum), - devpriv->daqio + ((chan) == 0) ? PCI230_DACOUT1 : PCI230_DACOUT2); + devpriv->daqio + ((chan == 0) ? PCI230_DACOUT1 : PCI230_DACOUT2)); } static inline void pci230_ao_write_fifo(struct comedi_device *dev, -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html