Bluetooth still appears on boot list after “disabling” on defconfig on a yocto build

[juanalbertogonz]

I edited my defconfig on /build/tmp/work/imx6qciu-poky-linux-gnueabi/linux/3.10.53-r0/git/arch/arm/configs with a patch to set configuration

CONFIG_BT=n
CONFIG_BT_RFCOMM=n
CONFIG_BT_RFCOMM_TTY=n
CONFIG_BT_BNEP=n
CONFIG_BT_BNEP_MC_FILTER=n
CONFIG_BT_BNEP_PROTO_FILTER=n
CONFIG_BT_HIDP=n

*I also tried commenting the lines

but on boot I still get the following messages:

root@imx6qciu:~# modprobe -l | grep bt
root@imx6qciu:~# modprobe -l | grep blue
root@imx6qciu:~# dmesg | grep Bluetooth
[ 0.412731] Bluetooth: Core ver 2.16
[ 0.412782] Bluetooth: HCI device and connection manager initialized
[ 0.412798] Bluetooth: HCI socket layer initialized
[ 0.412813] Bluetooth: L2CAP socket layer initialized
[ 0.412844] Bluetooth: SCO socket layer initialized
[ 1.538803] Bluetooth: HCI UART driver ver 2.2
[ 1.538807] Bluetooth: HCI H4 protocol initialized
[ 1.538809] Bluetooth: HCI BCSP protocol initialized
[ 1.538812] Bluetooth: HCIATH3K protocol initialized
[ 1.538933] Bluetooth: Generic Bluetooth SDIO driver ver 0.1
[ 3.738819] Bluetooth: RFCOMM TTY layer initialized
[ 3.738853] Bluetooth: RFCOMM socket layer initialized
[ 3.738856] Bluetooth: RFCOMM ver 1.11
[ 3.738860] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 3.738863] Bluetooth: BNEP filters: protocol multicast
[ 3.738872] Bluetooth: BNEP socket layer initialized
[ 3.738876] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
[ 3.738885] Bluetooth: HIDP socket layer initialized

I also add DISTRO_FEATURES_remove += "bluetooth" to my local.conf, when I look on the modprobe I can't find any module which is fine, but I still have the messages at boot .... how I can disable the load of those modules.

[juanalbertogonz]

Hi Ivan,

 I got this working using the menuconfig...

bitbake -c menuconfig virtual/kernel

and following this:

https://www.yoctoproject.org/docs/2.5/kernel-dev/kernel-dev.html#changing-the-configuration

 at the end I replace the defconfig with the generated with the menuconfig on the custom recipe, and it make it work. 

[juanalbertogonz · Accepted solution]

Hi Ivan,

I solve this using menuconfig 

bitbake -c menuconfig virtual/kernel

disable your bluetooth from the kernel and then you can add a recipe to add these changes permanently using fragments e.g.

https://www.yoctoproject.org/docs/2.5/kernel-dev/kernel-dev.html#changing-the-configuration

 I replace the defconfig with the generated with the menuconfig on the custom recipe, and it make it work.

[IvanRuiz]

Hello,

Which BSP and BT module are you working with?

BR,

Ivan.