drm/tegra: dc: Wire up CRTC parent of atomic state

Store a pointer to the CRTC in its atomic state to make it easy for
state handling code to get at the CRTC.

Tested-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index ec84bd486561..2fd229366bb2 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -997,8 +997,10 @@ static void tegra_crtc_reset(struct drm_crtc *crtc)
         crtc->state = NULL;
 
         state = kzalloc(sizeof(*state), GFP_KERNEL);
-        if (state)
+        if (state) {
                 crtc->state = &state->base;
+                crtc->state->crtc = crtc;
+        }
 }
 
 static struct drm_crtc_state *