field_desc_show
rc = field_desc_show(*p, tp_la0, cudbg_poutbuf);
rc = field_desc_show(p[0], tp_la0, cudbg_poutbuf);
rc = field_desc_show(p[1], tp_la0, cudbg_poutbuf);
rc = field_desc_show(p[0], tp_la0, cudbg_poutbuf);
rc = field_desc_show(p[1], (p[0] & BIT(17)) ? tp_la2 : tp_la1,