Re: [PATCH 2/2] drm/i915: Perform dpll commit first.

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Op 26-11-15 om 15:41 schreef Ander Conselvan De Oliveira:
> On Tue, 2015-11-24 at 10:44 +0100, Maarten Lankhorst wrote:
>> Warn for the wrong mask in enable only. Disable will have the wrong mask
>> now because the new state is committed before disabling the old state.
> Why?
>
> Ander
>
This is required for async commit. In that case the state has to be committed while
still holding the connection_mutex, but the modeset itself is run asynchronously.
This also means that any modeset has to wait for previous modesets to complete,
otherwise the pll state may be updated incorrectly.

~Maarten
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