Hello Ville,
On Fri, Feb 17, 2017 at 05:01:59PM +0200, ville.syrjala@xxxxxxxxxxxxxxx wrote:
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
>
> In order to make cursor updates actually safe wrt. watermark programming
> we have to clear the legacy_cursor_update flag in the atomic state. That
> will cause the regular atomic update path to do the necessary vblank
> wait after the plane update if needed, otherwise the vblank wait would
> be skipped and we'd feed the optimal watermarks to the hardware before
> the plane update has actually happened.
>
> [...]
>
> Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
> Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
> Cc: Uwe Kleine-König <uwe@xxxxxxxxxxxxxxxxx>
> Reported-by: Uwe Kleine-König <uwe@xxxxxxxxxxxxxxxxx>
> Fixes: f79f26921ee1 ("drm/i915: Add a cursor hack to allow converting legacy page flip to atomic, v3.")
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Is this supposed to fix
https://bugs.freedesktop.org/show_bug.cgi?id=98742 ? If so, the Fixes:
line seems wrong because f79f26921ee1 isn't in 4.9 where I see the
issue.
If I want to fix 4.9---my ultimate goal is to fix the kernel that will
go into the next stable release---I have to cherry-pick f79f26921ee1
first, I assume?
Best regards
Uwe
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