[Bug 84892] [BYT]igt/gem_concurrent_blit/gem_evict_everything sporadically causes *ERROR* timed out waiting for Punit

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84892

--- Comment #2 from Guo Jinxian <jinxianx.guo at intel.com> ---
I met another dmesg error while running tests on BSW


[root at x-bsw01 tests]# ./gem_concurrent_blit --run-subtest
gpuX-bcs-overwrite-source-forked
IGT-Version: 1.8-ga0b5c6d (x86_64) (Linux:
3.17.0_drm-intel-nightly_2ea23c_20141014+ x86_64)
using 2x512 buffers, each 1MiB
Subtest gpuX-bcs-overwrite-source-forked: SUCCESS (9.268s)
[root at x-bsw01 tests]# dmesg -r|egrep "<[1-4]>"|grep drm
<3>[ 2460.492212] [drm:__vlv_force_wake_get [i915]] *ERROR* Timed out: waiting
for Render to ack.
<3>[ 2463.683662] [drm:__vlv_force_wake_get [i915]] *ERROR* Timed out: waiting
for Render to ack.
<3>[ 2463.710842] [drm:__vlv_force_wake_get [i915]] *ERROR* Timed out: waiting
for Render to ack.
<3>[ 2463.718482] [drm:__vlv_force_wake_get [i915]] *ERROR* Timed out: waiting
for Render to ack.
<3>[ 2466.467510] [drm:__vlv_force_wake_get [i915]] *ERROR* Timed out: waiting
for Render to ack.

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