default or selected kernelversion does not have config value CONFIG_BT_LEGACY_IOCTL.
Result is shown for kernelversion 5.4.69
Enable legacy ioctl interfaces
configname: CONFIG_BT_LEGACY_IOCTL
Linux Kernel Configuration
└─>Networking support
└─>Bluetooth subsystem support
└─>Enable legacy ioctl interfaces
In linux kernel since version 4.9.1 (release Date: 2017-01-06)
Enable support for legacy ioctl interfaces. This is only needed
for old and deprecated applications using direct ioctl calls for
controller management. Since Linux 3.4 all configuration and
setup is done via mgmt interface and this is no longer needed.
for old and deprecated applications using direct ioctl calls for
controller management. Since Linux 3.4 all configuration and
setup is done via mgmt interface and this is no longer needed.