NI660X_NUM_PFI_CHANNELS
s->n_chan = NI660X_NUM_PFI_CHANNELS;
unsigned int io_cfg[NI660X_NUM_PFI_CHANNELS];
for (i = 0; i < NI660X_NUM_PFI_CHANNELS; ++i)
for (chan = 0; chan < NI660X_NUM_PFI_CHANNELS; ++chan)