HAL_RXKEYIX_INVALID
rs->rs_keyix = HAL_RXKEYIX_INVALID;
rs->rs_keyix = HAL_RXKEYIX_INVALID;
rs->rs_keyix = HAL_RXKEYIX_INVALID;
rs->rs_keyix = HAL_RXKEYIX_INVALID;
if (rs->rs_keyix == HAL_RXKEYIX_INVALID)
rs->rs_keyix == HAL_RXKEYIX_INVALID ?
rs->rs_keyix != HAL_RXKEYIX_INVALID)