[Bug 106682] [CI] [ELK only] igt@* - dmesg-fail - Failed assertion: drmWaitVBlank(drm_fd, &wait_vbl) == 0

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106682

Martin Peres <martin.peres at free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |---

--- Comment #2 from Martin Peres <martin.peres at free.fr> ---
(In reply to Ville Syrjala from comment #1)
> This was presumably fixed by
> 
> commit 132c27c97cb958f637dc05adc35a61b47779bcd8
> Author: Ville Syrjälä <ville.syrjala at linux.intel.com>
> Date:   Mon Jun 11 23:02:55 2018 +0300
> 
>     drm/i915: Fix PIPESTAT irq ack on i965/g4x

This happened again after this patch:

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_4298_12/fi-elk-e7500/igt@kms_pipe_crc_basic@nonblocking-crc-pipe-b.html

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_4298_12/fi-elk-e7500/igt@kms_pipe_crc_basic@nonblocking-crc-pipe-b.html

(kms_pipe_crc_basic:3583) igt_kms-CRITICAL: Test assertion failure function
igt_wait_for_vblank_count, file ../lib/igt_kms.c:3842:
(kms_pipe_crc_basic:3583) igt_kms-CRITICAL: Failed assertion:
drmWaitVBlank(drm_fd, &wait_vbl) == 0
(kms_pipe_crc_basic:3583) igt_kms-CRITICAL: Last errno: 16, Device or resource
busy

In any case, this patch reduced massively the frequency of this issue!

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