I tried to compile a kernel with genkernel, and turned on usb video support.
The link stage choked on undefined references, and my hunches tell me it's due to a missed dependency somewhere in the kernel configuration.
Steps to Reproduce:
1. use supplied configuration
2. compile the kernel with it
a successful kernel build
This appears to be a regression, since I've had this enabled before without trouble. May want to give upstream's stable team a poke in the process.
Created attachment 352196 [details]
Genkernel build log
Created attachment 352198 [details]
Created attachment 352200 [details]
fixed kernel configuration
Here's a manually patched kernel configuration that makes the problem go away.
Diffing the two should probably help finger which dependencies need added to the Kconfigs.
That's not the only one though.
Don't forget about the USB stuff.
I had some USB stuff set to Y, but one of the (U/O)HCI thingies to M
genkernel configs have been refreshed and no such issues currently appear to be present