[Intel-gfx] [PATCH] drm: Only take cursor locks when the cursor plane exists

[Tony Lindgren]

* Daniel Vetter <daniel.vetter at ffwll.ch> [170407 09:50]:
> I thought I've fixed this, but maybe not. Anyway, clearly broken, and
> easy fix.
> 
> Cc: Tony Lindgren <tony at atomide.com>
> Reported-by: Tony Lindgren <tony at atomide.com>
> Fixes: b95ff0319a82 ("drm: Remove drm_modeset_(un)lock_crtc")
> Cc: Harry Wentland <harry.wentland at amd.com>
> Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
> Cc: Daniel Vetter <daniel.vetter at intel.com>
> Cc: Jani Nikula <jani.nikula at linux.intel.com>
> Cc: Sean Paul <seanpaul at chromium.org>
> Cc: David Airlie <airlied at linux.ie>
> Cc: dri-devel at lists.freedesktop.org
> Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>

Thanks this fixes the issue with starting X with Linux next
for me:

Tested-by: Tony Lindgren <tony at atomide.com>