[Bug 75244] [BYT Regression]igt/gem_concurrent_blit/gtt-gpu-read-after-write-forked causes *ERROR* timed out waiting for Punit

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75244

--- Comment #22 from Guo Jinxian <jinxianx.guo at intel.com> ---
This bug still able to reproduce on latest
-nightly(186631131a9289dad22f51315d78b9b6ac5b425f)

root at x-byt06:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests#
./gem_concurrent_blit --run-subtest gtt-gpu-read-after-write-forked
IGT-Version: 1.7-g5c7bcb1 (x86_64) (Linux:
3.16.0_drm-intel-nightly_186631_20140818+ x86_64)
using 2x512 buffers, each 1MiB
Subtest gtt-gpu-read-after-write-forked: SUCCESS
root at x-byt06:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# dmesg -r|egrep
"<[1-4]>"|grep drm                  <3>[10491.334009] [drm:vlv_set_rps_idle]
*ERROR* timed out waiting for Punit

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