[PATCH] drm: Use atomic state for FB in legacy ioctls

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If atomic state is available, use this to read the current plane in
GetCrtc/GetPlane, rather than the legacy points.

Signed-off-by: Daniel Stone <daniels@xxxxxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxxx>
---
 drivers/gpu/drm/drm_crtc.c  | 5 ++++-
 drivers/gpu/drm/drm_plane.c | 8 ++++++--
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index e75f62c..14c5807 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -357,7 +357,10 @@ int drm_mode_getcrtc(struct drm_device *dev,
 
 	drm_modeset_lock_crtc(crtc, crtc->primary);
 	crtc_resp->gamma_size = crtc->gamma_size;
-	if (crtc->primary->fb)
+
+	if (crtc->primary->state && crtc->primary->state->fb)
+		crtc_resp->fb_id = crtc->primary->state->fb->base.id;
+	else if (!crtc->primary->state && crtc->primary->fb)
 		crtc_resp->fb_id = crtc->primary->fb->base.id;
 	else
 		crtc_resp->fb_id = 0;
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
index 62b98f3..c2dc8e6 100644
--- a/drivers/gpu/drm/drm_plane.c
+++ b/drivers/gpu/drm/drm_plane.c
@@ -392,12 +392,16 @@ int drm_mode_getplane(struct drm_device *dev, void *data,
 		return -ENOENT;
 
 	drm_modeset_lock(&plane->mutex, NULL);
-	if (plane->crtc)
+	if (plane->state && plane->state->crtc)
+		plane_resp->crtc_id = plane->state->crtc->base.id;
+	else if (!plane->state && plane->crtc)
 		plane_resp->crtc_id = plane->crtc->base.id;
 	else
 		plane_resp->crtc_id = 0;
 
-	if (plane->fb)
+	if (plane->state && plane->state->fb)
+		plane_resp->fb_id = plane->state->fb->base.id;
+	else if (!plane->state && plane->fb)
 		plane_resp->fb_id = plane->fb->base.id;
 	else
 		plane_resp->fb_id = 0;
-- 
2.10.2

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