pvr2_hdw_wait
if ((ret = pvr2_hdw_wait(hdw,0)) < 0) return ret;
if ((ret = pvr2_hdw_wait(hdw,st)) < 0) return ret;
return pvr2_hdw_wait(hdw,0);
return pvr2_hdw_wait(hdw,0);
static int pvr2_hdw_wait(struct pvr2_hdw *,int state);