comedi_get_read_subdevice - find streaming input subdevice
#include <comedilib.h>
int comedi_get_read_subdevice (comedi_t * device);
The function comedi_get_read_subdevice() returns the subdevice that
allows streaming input for device dev. If no subdevice supports
streaming input, -1 is returned and the Comedilib error number is set
to XXX "subdevice not found".
28 October 2007