summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/rockchip/rockchip_drm_vop.c')
-rw-r--r--drivers/gpu/drm/rockchip/rockchip_drm_vop.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index c0b647435..69eb0de99 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -1088,6 +1088,9 @@ static struct drm_crtc_state *vop_crtc_duplicate_state(struct drm_crtc *crtc)
{
struct rockchip_crtc_state *rockchip_state;
+ if (WARN_ON(!crtc->state))
+ return NULL;
+
rockchip_state = kzalloc(sizeof(*rockchip_state), GFP_KERNEL);
if (!rockchip_state)
return NULL;