[Intel-xe] [PATCH 5/6] drm/i915/display: in skl_surf_address check for dpt-vma

[Juha-Pekka Heikkila]

touch dpt_vma->node only if dpt-vma is not NULL

Signed-off-by: Juha-Pekka Heikkila <juhapekka.heikkila at gmail.com>
Reviewed-by: Jouni Högander <jouni.hogander at intel.com>
Signed-off-by: Jouni Högander <jouni.hogander at intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231116150225.204233-2-juhapekka.heikkila@gmail.com
(cherry picked from commit 185b24883e278ba298c073164d1e1abacc986d9f)
---
 drivers/gpu/drm/i915/display/skl_universal_plane.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c
index a4c0a7a3523f..ae6bad4407eb 100644
--- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
+++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
@@ -1006,7 +1006,8 @@ static u32 skl_surf_address(const struct intel_plane_state *plane_state,
 		 * The DPT object contains only one vma, so the VMA's offset
 		 * within the DPT is always 0.
 		 */
-		drm_WARN_ON(&i915->drm, plane_state->dpt_vma->node.start);
+		drm_WARN_ON(&i915->drm, plane_state->dpt_vma &&
+			    plane_state->dpt_vma->node.start);
 		drm_WARN_ON(&i915->drm, offset & 0x1fffff);
 		return offset >> 9;
 	} else {
-- 
2.25.1