[Bug 67813] [HSW bisected]igt/module_reload causes [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004 and system hang with headless, with power well disabled

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=67813

--- Comment #9 from lu hua <huax.lu at intel.com> ---
(In reply to comment #8)
> Created attachment 84069 [details] [review]
> Fix for the bug
> 
> Hi
> 
> Can you please verify this patch fixes the bug?
> 
> Please notice that this patch only fixes the "unclaimed register" messages.
> When running module_reload I still see many problems which are not fixed by
> this patch:
> - We get a gpu hang most of the time
> - Backlight doesn't work
> - Sometimes we get an oops
> - There's a big lockdep warning every time.
> 
> Thanks,
> Paulo

I test this patch. This issue still exists.

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