[PATCH] drm/atomic: Try to preserve the crtc enabled state in drm_atomic_remove_fb, v2.

[Maarten Lankhorst]

Op 07-11-17 om 15:31 schreef Daniel Vetter:
> On Wed, Nov 01, 2017 at 04:04:33PM +0100, Maarten Lankhorst wrote:
>> This introduces a slight behavioral change to rmfb. Instead of
>> disabling a crtc when the primary plane is disabled, we try to
>> preserve it.
>>
>> Apart from old versions of the vmwgfx xorg driver, there is
>> nothing depending on rmfb disabling a crtc.
>>
>> Vmwgfx' and simple kms helper atomic implementation rejects CRTC
>> enabled without plane, so we can do this safely.
>>
>> If the atomic commit is rejected by the driver then we will still
>> fall back to the old behavior and turn off the crtc.
>>
>> Changes since v1:
>> - Restart completely when rmfb with crtc on fails (Sean Paul).
>>
>> Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
>> Cc: Sean Paul <seanpaul at chromium.org>
>> Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
> Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
Thanks, pushed. :)