I2C_TXN_STATE_UNLOCKED
next->txn_state = I2C_TXN_STATE_UNLOCKED;
VERIFY3U(txn->txn_state, !=, I2C_TXN_STATE_UNLOCKED);
txn->txn_state = I2C_TXN_STATE_UNLOCKED;
txn->txn_state = I2C_TXN_STATE_UNLOCKED;
VERIFY3U(txn->txn_state, ==, I2C_TXN_STATE_UNLOCKED);
if (txn->txn_state == I2C_TXN_STATE_UNLOCKED) {
VERIFY3U(txn->txn_state, ==, I2C_TXN_STATE_UNLOCKED);
VERIFY3P(txn->txn_state, ==, I2C_TXN_STATE_UNLOCKED);