rzg2l_cru_buffer
struct rzg2l_cru_buffer *buf, *node;
struct rzg2l_cru_buffer *buf;
struct rzg2l_cru_buffer, list);
(&container_of(vb2_buffer, struct rzg2l_cru_buffer, vb)->list)
q->buf_struct_size = sizeof(struct rzg2l_cru_buffer);