[yocto] Question regarding kernel modules using outoftree kernel builds (EXTERNALSRC)

[Manjukumar Harthikote Matha]

All,

I am unable to build kernel modules when using EXTERNALSRC. When you 
inherit module.bbclass, it depends on kernel shared dir (from 
do_shared_workdir). I do see that SRCTREECOVEREDTASKS has explicitly 
made sure we skip do_shared_workdir in kernel-yocto.bbclass.

Is this intended? What is the expected flow when building out-of-tree 
kernel modules using kernel EXTERNALSRC

Thanks
Manju