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For chips with security enabled, it's only possible to load firmware with a valid signature pattern. If key_id is not zero, it indicates a security chip, and the driver will not load the config file. - Example log for a security chip. Bluetooth: hci0: RTL: examining hci_ver=0c hci_rev=000a lmp_ver=0c lmp_subver=8922 Bluetooth: hci0: RTL: rom_version status=0 version=1 Bluetooth: hci0: RTL: btrtl_initialize: key id 1 Bluetooth: hci0: RTL: loading rtl_bt/rtl8922au_fw.bin Bluetooth: hci0: RTL: cfg_sz 0, total sz 71301 Bluetooth: hci0: RTL: fw version 0x41c0c905 - Example log for a normal chip. Bluetooth: hci0: RTL: examining hci_ver=0c hci_rev=000a lmp_ver=0c lmp_subver=8922 Bluetooth: hci0: RTL: rom_version status=0 version=1 Bluetooth: hci0: RTL: btrtl_initialize: key id 0 Bluetooth: hci0: RTL: loading rtl_bt/rtl8922au_fw.bin Bluetooth: hci0: RTL: loading rtl_bt/rtl8922au_config.bin Bluetooth: hci0: RTL: cfg_sz 6, total sz 71307 Bluetooth: hci0: RTL: fw version 0x41c0c905 Tested-by: Hilda Wu <hildawu@realtek.com> Signed-off-by: Nial Ni <niall_ni@realsil.com.cn> Signed-off-by: Max Chou <max.chou@realtek.com> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>