hci_devcd_append_pattern
hci_devcd_append_pattern(hdev, 0x0, dump_size);
hci_devcd_append_pattern(hu->hdev, 0x00,
int hci_devcd_append_pattern(struct hci_dev *hdev, u8 pattern, u32 len);
EXPORT_SYMBOL(hci_devcd_append_pattern);