PM_TREE
#define THRU_ENABLED(smc) (smc->y[PA].pc_mode != PM_TREE && \
smc->y[PB].pc_mode != PM_TREE)
(smc->y[PA].pc_mode == PM_TREE ||
smc->y[PB].pc_mode == PM_TREE))) {
phy->pc_mode = PM_TREE ;
if (phy->pc_mode == PM_TREE) {
(smc->y[PA].pc_mode == PM_TREE ||
smc->y[PB].pc_mode == PM_TREE)) {