drm/i915: Switch plane properties to full atomic helper.

[cascardo/linux.git] / drivers / gpu / drm / i915 / intel_atomic_plane.c

diff --git a/drivers/gpu/drm/i915/intel_atomic_plane.c b/drivers/gpu/drm/i915/intel_atomic_plane.c
index 4a3914f..9e6f727 100644 (file)
--- a/drivers/gpu/drm/i915/intel_atomic_plane.c
+++ b/drivers/gpu/drm/i915/intel_atomic_plane.c
@@ -117,6 +117,15 @@ static int intel_plane_atomic_check(struct drm_plane *plane,
        crtc = crtc ? crtc : plane->crtc;
        intel_crtc = to_intel_crtc(crtc);
 
+       /*
+        * Both crtc and plane->crtc could be NULL if we're updating a
+        * property while the plane is disabled.  We don't actually have
+        * anything driver-specific we need to test in that case, so
+        * just return success.
+        */
+       if (!crtc)
+               return 0;
+
        /*
         * The original src/dest coordinates are stored in state->base, but
         * we want to keep another copy internal to our driver that we can