radeon CS parser refactoring

[Christian König]

On 08.01.2013 00:09, Ilija Hadzic wrote:
> * There are multiple patches that contributed to the breakage of UMS.
>   I didn't bother pin-pointing them all, but one that I looked
>   (6a7068b4) dates back to April 2012 so there are kernels out in
>   distros that crash on UMS. That probably tells us how many UMS
>   users are left out there :-). BTW, the reason UMS crashes is
>   because parser->rdev is NULL in UMS mode so every patch that tries
>   to dereference it (and shares the code path with UMS) will cause an
>   oops (it will become clear when you see the patches).

Well, that are some very valuable informations. Thx allot for testing 
and preparing patches to fix those bugs.

It confirms my suspicion that nobody is testing the UMS code paths any 
more and so in reality the code is completely unmaintained.

Christian.