extern void cb_out_2(struct pcbit_dev * dev, struct pcbit_chan* chan,
struct callb_data *data);
-extern void cb_out_3(struct pcbit_dev * dev, struct pcbit_chan* chan,
- struct callb_data *data);
-
extern void cb_in_1(struct pcbit_dev * dev, struct pcbit_chan* chan,
struct callb_data *data);
extern void cb_in_2(struct pcbit_dev * dev, struct pcbit_chan* chan,