[PATCH] drm/i915: Wait for all pending operations to the fb before disabling the pipe

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Hi Timo,

Timo Aaltonen wrote:

> commit d698c826bb93663e4b349a78fbd30443654d37cd upstream.
>
> Please pull this for v3.2.x, should be the last missing (kernel) piece
> for https://bugs.freedesktop.org/show_bug.cgi?id=48838
[...]
>              It should be more reliable to wait for the pending
> operations to complete first, even though we still have a window for
> userspace to submit a broken command buffer during the modeset.

That sounds hazy --- is it tested?

Presumably this is needed for 3.4.y and 3.5.y as well, right?  Do you
know when the bad behavior was introduced?  Does 3.0.y need the fix as
well?

Thanks and hope that helps,
Jonathan


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