[Bug 63101] Hard lockup whel launching games like TF2 on kernels 3.11.5 and 3.12 rc4 and above if radeon.dpm=1 is used

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https://bugzilla.kernel.org/show_bug.cgi?id=63101

--- Comment #21 from Kertesz Laszlo <laszlo.kertesz@gmail.com> ---
The 

pi->uvd_dpm = true; /* ??? */

line above wasnt a typo. I was trying to say that 

- ANY of the enable_mg_clock_gating, enable_gfx_dynamic_mgpg,
override_dynamic_mgpg options enabled caused softresets which most of the time
were recovered IF uvd_dpm was false.
- But if ANY of the above 3 options was true AND uvd_dpm true, i got the worst
kind of behavior which most times rendereed the desktop unusable. 

- If the 3 options were false AND uvd_dpm true, it works.

I have the kernel (next-20131113) compiled with that exact piece of code i
pasted in my previous comment right now and everything works fine so far, all
games i tried, hardware decoding with xbmc and the webgl demos from
chromeexperiments (on Seamonkey and Firefox, Chrome seems to hate mesa/radeon).

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