[Bug 84855] [ILK Regression]igt kms_rotation_crc/sprite-rotatio causes system hang

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84855

Daniel Vetter <daniel at ffwll.ch> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |NEEDINFO

--- Comment #4 from Daniel Vetter <daniel at ffwll.ch> ---
(In reply to lu hua from comment #1)
> I tried to bisect it twice, bisect shows:
> 8525b5ec90a58b3e56709ffa1667d6593dbe24c3 is the first bad commit. But revert
> this commit, the hang still exists.
> commit 8525b5ec90a58b3e56709ffa1667d6593dbe24c3
> Author: YoungJun Cho <yj44.cho at samsung.com>
> Date:   Thu Aug 14 11:22:36 2014 +0900
> 
>     drm/exynos: dsi: fix exynos_dsi_set_pll() wrong return value
> 
>     The type of this function is unsigned long, and it is expected
>     to return proper fout value or zero if something is wrong.
>     So this patch fixes wrong return value for error cases.
> 
>     Signed-off-by: YoungJun Cho <yj44.cho at samsung.com>
>     Acked-by: Inki Dae <inki.dae at samsung.com>
>     Acked-by: Kyungmin Park <kyungmin.park at samsung.com>
>     Acked-by: Andrzej Hajda <a.hajda at samsung.com>
>     Signed-off-by: Inki Dae <inki.dae at samsung.com>

Ok, so we need the bisect but this patch certainly isn't it - it's in the
exynos driver which isn't even compiled. Can you please try to redo the bisect
carefully and please make really sure that you're chasing the same bug and not
something else.

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