[Intel-gfx] [PATCH] drm/i915: delay hotplug scheduling

[Jani Nikula]

On Tue, 25 Sep 2018, Chris Wilson <chris at chris-wilson.co.uk> wrote:
> Quoting Jani Nikula (2018-09-25 08:18:36)
>> On some systems we get the hotplug irq on unplug before the DDC pins
>> have been disconnected, resulting in connector status remaining
>> connected. Since previous attempts at using hotplug live status before
>> DDC have failed, the only viable option is to reduce the window for
>> mistakes. Delay the hotplug processing.
>
> The only concern I would raise is there some expectation for latency of
> hotplug? 300ms doesn't seem like it would irk the user -- it won't be
> noticeable unless using a kvm or equivalent. I would be more concerned
> if there was a line in the conformance tests that expect a response to a
> hotplug interrupt within a certain time window.

Frankly, I don't know. But I suppose a conformance test like that would
like the retry approach even less?

BR,
Jani.

-- 
Jani Nikula, Intel Open Source Graphics Center