[Bug 96701] [APL] [BAT] kms_cursor_legacy some subtest causes [i915]] *ERROR* Potential atomic update failure on pipe

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96701

--- Comment #18 from Imre Deak <imre.deak at intel.com> ---
(In reply to cprigent from comment #17)
> I just tried with the IGT patch applied. Test is Pass but I see the error in
> kernel logs.

Thanks. I think the two issues are separate, so we'd need separate bugs for
them.

> 
> Kernel nightly 2fe098f 4.7.0-rc7 from https://cgit.freedesktop.org/drm-intel/
>   commit 2fe098ff21273583acc9c232ec120675de9cd811
>   Author: Chris Wilson <chris at chris-wilson.co.uk>
>   Date:   Fri Jul 15 20:42:25 2016 +0100
>   drm-intel-nightly: 2016y-07m-15d-19h-42m-01s UTC integration manifest
> 
> root at BXTP6:~/intel-gpu-tools/tests# cat /proc/cmdline
> vmlinuz root=UUID=a9394a0f-0785-42fb-b164-d080a278295d initrd=/initrd
> initcall_debug drm.debug=0xe log_buf_len=10M
> 
> root at BXTP6:~/intel-gpu-tools/tests# ./kms_cursor_legacy --r
> basic-cursor-vs-flip
> IGT-Version: 1.15-ge7ed4ef (x86_64) (Linux: 4.7.0-rc7-nightly+ x86_64)
> Test requirement not met in function __real_main472, file
> kms_cursor_legacy.c:493:
> Test requirement: !(n >= data.resources->count_crtcs)
> Subtest basic-cursor-vs-flip: SUCCESS (1,902s)
> 
> root at BXTP6:~/intel-gpu-tools/tests# dmesg |grep atomic
> [    2.258842] [drm:intel_modeset_checks] New cdclk calculated to be atomic
> 288000, actual 288000
> [    2.346907] [drm:intel_modeset_checks] New cdclk calculated to be atomic
> 288000, actual 288000
> [   43.255319] [drm:intel_modeset_checks] New cdclk calculated to be atomic
> 288000, actual 288000
> [   43.621526] [drm:intel_pipe_update_start [i915]] *ERROR* Potential atomic
> update failure on pipe A
> [   43.631383] [drm:intel_pipe_update_start [i915]] *ERROR* Potential atomic
> update failure on pipe A
> [   43.641246] [drm:intel_pipe_update_start [i915]] *ERROR* Potential atomic
> update failure on pipe A
> [   43.651095] [drm:intel_pipe_update_start [i915]] *ERROR* Potential atomic
> update failure on pipe A
> [   43.660955] [drm:intel_pipe_update_start [i915]] *ERROR* Potential atomic
> update failure on pipe A
> [   43.670808] [drm:intel_pipe_update_start [i915]] *ERROR* Potential atomic
> update failure on pipe A
> [   43.680669] [drm:intel_pipe_update_start [i915]] *ERROR* Potential atomic
> update failure on pipe A
> [   43.690521] [drm:intel_pipe_update_start [i915]] *ERROR* Potential atomic
> update failure on pipe A
> [   43.700384] [drm:intel_pipe_update_start [i915]] *ERROR* Potential atomic
> update failure on pipe A
> [   43.710235] [drm:intel_pipe_update_start [i915]] *ERROR* Potential atomic
> update failure on pipe A
> [   43.714559] [drm:intel_modeset_checks] New cdclk calculated to be atomic
> 288000, actual 288000
> [   43.719642] [drm:intel_modeset_checks] New cdclk calculated to be atomic
> 288000, actual 288000

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