[Bug 76554] [gm45 regression] [drm:init_ring_common]: *ERROR* render ring initialization failed

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=76554

--- Comment #61 from Jiri Kosina <jikos at jikos.cz> ---
(In reply to comment #60)
> No good ideas here either, but would be nice to see if this makes a
> difference on
> ring init:

Even with the memset() patch from comment#60 applied on top of the previous
bunch, I see this on resume:

[   54.300012] [drm:stop_ring] *ERROR* render ring :timed out trying to stop
ring
[   54.300018] [drm:init_ring_common] *ERROR* render ring initialization failed
ctl 0001f401 (valid? 1) head 000e252c tail 00000008 start 000e4000 [expected
000e4000]
[   54.300021] Ring render ring after initialisation: 0001f401 000e252c
00000008 000e4000
[   54.300031] [drm:__i915_drm_thaw] *ERROR* failed to re-initialize GPU,
declaring wedged!

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