/* Get the next subbuffer */
err = ustctl_get_next_subbuf(handle, buf);
if (err != 0) {
/* Get the next subbuffer */
err = ustctl_get_next_subbuf(handle, buf);
if (err != 0) {
/*
* This is a debug message even for single-threaded consumer,
* because poll() have more relaxed criterions than get subbuf,
/*
* This is a debug message even for single-threaded consumer,
* because poll() have more relaxed criterions than get subbuf,