In cases where old_state may not be present we hit a null dereference. Add a check to fix this and also do an early return if there is no new_state or crtc since there is nothing to do in that case. This fixes igt test kms_cursor_legacy@torture-bo.
Signed-off-by: Maaz Mombasawala <[email protected]> --- drivers/gpu/drm/vmwgfx/vmwgfx_cursor_plane.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_cursor_plane.c b/drivers/gpu/drm/vmwgfx/vmwgfx_cursor_plane.c index c46f17ba7236..88b7185a8371 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_cursor_plane.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_cursor_plane.c @@ -744,9 +744,14 @@ vmw_cursor_plane_atomic_update(struct drm_plane *plane, struct vmw_bo *bo; struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane); + if (!new_state) + return; struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, plane); - struct drm_crtc *crtc = new_state->crtc ?: old_state->crtc; + struct drm_crtc *crtc = new_state->crtc ? new_state->crtc : + (old_state ? old_state->crtc : NULL); + if (!crtc) + return; struct vmw_private *dev_priv = vmw_priv(plane->dev); struct vmw_display_unit *du = vmw_crtc_to_du(crtc); struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state); -- 2.53.0
