[Intel-gfx] [PATCH] drm/i915: Fix all pipe->plane mappings before sanitizing crtc

[Jani Nikula]

On Wed, 14 Jan 2015, Ander Conselvan de Oliveira <conselvan2 at gmail.com> wrote:
> On 01/14/2015 12:47 PM, Jani Nikula wrote:
>> On Tue, 13 Jan 2015, Ander Conselvan de Oliveira <ander.conselvan.de.oliveira at intel.com> wrote:
>>> If QUIRK_PIPEA_FORCE is necessary, intel_sanitize_crtc() might trigger
>>> a mode set. In that case, if pipe A is disabled and pipe B is mapped to
>>> plane B, that mode set happens before the mapping is fixed. Due to the
>>> wrong state, the call to disable pipe B disables plane A (which is
>>> already disabled) and later an assertion for plane B being enabled
>>> (while it should have been disabled) is triggered.
>>>
>>> References: https://bugs.freedesktop.org/show_bug.cgi?id=72782
>>
>> If the patch is expected to fix the bug, please use Bugzilla:. If you're
>> referencing a bug because it's otherwise relevant, please use
>> References:.
>>
>> Which one is this?
>
> This showed up in the dmesg attached to the referenced bug, but is not 
> the root cause of the reported problem. As far as I know, there is no 
> open bug for this particular issue.

Ah, so it's correct as it is. Sorry for the noise. Please carry on.

BR,
Jani.

-- 
Jani Nikula, Intel Open Source Technology Center