From: Thierry Reding treding@nvidia.com
[ Upstream commit 7cf77b273a8fc51e7de622fa6691abd4436a9a6b ]
Reported-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Thierry Reding treding@nvidia.com Signed-off-by: Sasha Levin (Microsoft) sashal@kernel.org --- drivers/gpu/drm/tegra/hub.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/tegra/hub.c b/drivers/gpu/drm/tegra/hub.c index 922a48d5a483..c7c612579270 100644 --- a/drivers/gpu/drm/tegra/hub.c +++ b/drivers/gpu/drm/tegra/hub.c @@ -378,14 +378,16 @@ static int tegra_shared_plane_atomic_check(struct drm_plane *plane, static void tegra_shared_plane_atomic_disable(struct drm_plane *plane, struct drm_plane_state *old_state) { - struct tegra_dc *dc = to_tegra_dc(old_state->crtc); struct tegra_plane *p = to_tegra_plane(plane); + struct tegra_dc *dc; u32 value;
/* rien ne va plus */ if (!old_state || !old_state->crtc) return;
+ dc = to_tegra_dc(old_state->crtc); + /* * XXX Legacy helpers seem to sometimes call ->atomic_disable() even * on planes that are already disabled. Make sure we fallback to the