BTMTKSDIO_HW_TX_READY
set_bit(BTMTKSDIO_HW_TX_READY, &bdev->tx_state);
clear_bit(BTMTKSDIO_HW_TX_READY, &bdev->tx_state);
set_bit(BTMTKSDIO_HW_TX_READY, &bdev->tx_state);
if (test_bit(BTMTKSDIO_HW_TX_READY, &bdev->tx_state)) {