[pasemi] Radeon HD graphics card not recognised after the powerpc-4.8-1 commit

[Christian Zigotzky]

Hello,

I tried to compile the latest Git kernel today. It boots but Xorg 
doesn't work anymore.

     [    41.210] (++) using VT number 7

     [    41.341] (II) [KMS] Kernel modesetting enabled.
     [    41.341] (EE) No devices detected.
     [    41.341] (EE)
     Fatal server error:
     [    41.341] (EE) no screens found(EE)
     [    41.341] (EE)

I reverted the commit "powerpc-4.8-1" and Xorg works. The commit 
"powerpc-4.8-1" is the problem.

Link: 
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bad60e6f259a01cf9f29a1ef8d435ab6c60b2de9

Which source code modification in the commit "powerpc-4.8-1" could be 
the problem?

Cheers,

Christian