diff --git a/demo/ao_mmap.c b/demo/ao_mmap.c index f4b65d9..5da1464 100644 --- a/demo/ao_mmap.c +++ b/demo/ao_mmap.c @@ -171,12 +171,12 @@ int main(int argc, char *argv[]) while(1) { int bytes_marked = comedi_get_buffer_contents(dev,subdevice); + int bytes_unmarked = size - bytes_marked; if(bytes_marked < 0) { comedi_perror("comedi_get_buffer_contents"); exit(1); } - int bytes_unmarked = size - bytes_marked; if(bytes_unmarked > 0) { // this keeps comedi from reporting a buffer underrun