HCI_UART_TX_WAKEUP
set_bit(HCI_UART_TX_WAKEUP, &hu->tx_state);
clear_bit(HCI_UART_TX_WAKEUP, &hu->tx_state);
if (test_bit(HCI_UART_TX_WAKEUP, &hu->tx_state))
if (test_bit(HCI_UART_TX_WAKEUP, &hu->tx_state))
clear_bit(HCI_UART_TX_WAKEUP, &hu->tx_state);
} while (test_bit(HCI_UART_TX_WAKEUP, &hu->tx_state));