INVALID_SMENDX
if (idx != INVALID_SMENDX) {
cfg->smendx[i] = INVALID_SMENDX;
cfg->smendx[i] = INVALID_SMENDX;
cfg->smendx[i] = INVALID_SMENDX;
(i >= fw->num_ids ? INVALID_SMENDX : cfg->smendx[i])