diff options
| author | Thierry Reding <treding@nvidia.com> | 2019-02-11 11:51:20 +0100 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2019-03-22 14:08:54 +0100 |
| commit | 7cf77b273a8fc51e7de622fa6691abd4436a9a6b (patch) | |
| tree | 3abd74076f37095704f4ad0fe1112a2ad0dbd783 | |
| parent | 9e98c678c2d6ae3a17cb2de55d17f69dddaa231b (diff) | |
drm/tegra: hub: Fix dereference before check
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
| -rw-r--r-- | drivers/gpu/drm/tegra/hub.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/tegra/hub.c b/drivers/gpu/drm/tegra/hub.c index ba9b3cfb8c3d..b3436c2aed68 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 |