drm/sti: fix atomic_disable check

When a drm_plane is being disabled, its ->crtc member is set to NULL
before the .atomic_disable() func is called.
To get the crtc of the plane, read old_state->crtc instead of
drm_plane->crtc

Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Acked-by: Vincent Abriou <vincent.abriou@st.com>

diff --git a/drivers/gpu/drm/sti/sti_cursor.c b/drivers/gpu/drm/sti/sti_cursor.c
index 651f231..cca75bd 100644 (file)
--- a/drivers/gpu/drm/sti/sti_cursor.c
+++ b/drivers/gpu/drm/sti/sti_cursor.c
@@ -309,15 +309,15 @@ static void sti_cursor_atomic_disable(struct drm_plane *drm_plane,
 {
        struct sti_plane *plane = to_sti_plane(drm_plane);
 
-       if (!drm_plane->crtc) {
+       if (!oldstate->crtc) {
                DRM_DEBUG_DRIVER("drm plane:%d not enabled\n",
                                 drm_plane->base.id);
                return;
        }
 
        DRM_DEBUG_DRIVER("CRTC:%d (%s) drm plane:%d (%s)\n",
-                        drm_plane->crtc->base.id,
-                        sti_mixer_to_str(to_sti_mixer(drm_plane->crtc)),
+                        oldstate->crtc->base.id,
+                        sti_mixer_to_str(to_sti_mixer(oldstate->crtc)),
                         drm_plane->base.id, sti_plane_to_str(plane));
 
        plane->status = STI_PLANE_DISABLING;

diff --git a/drivers/gpu/drm/sti/sti_gdp.c b/drivers/gpu/drm/sti/sti_gdp.c
index 1d5ebe4..083c0ac 100644 (file)
--- a/drivers/gpu/drm/sti/sti_gdp.c
+++ b/drivers/gpu/drm/sti/sti_gdp.c
@@ -846,15 +846,15 @@ static void sti_gdp_atomic_disable(struct drm_plane *drm_plane,
 {
        struct sti_plane *plane = to_sti_plane(drm_plane);
 
-       if (!drm_plane->crtc) {
+       if (!oldstate->crtc) {
                DRM_DEBUG_DRIVER("drm plane:%d not enabled\n",
                                 drm_plane->base.id);
                return;
        }
 
        DRM_DEBUG_DRIVER("CRTC:%d (%s) drm plane:%d (%s)\n",
-                        drm_plane->crtc->base.id,
-                        sti_mixer_to_str(to_sti_mixer(drm_plane->crtc)),
+                        oldstate->crtc->base.id,
+                        sti_mixer_to_str(to_sti_mixer(oldstate->crtc)),
                         drm_plane->base.id, sti_plane_to_str(plane));
 
        plane->status = STI_PLANE_DISABLING;

diff --git a/drivers/gpu/drm/sti/sti_hqvdp.c b/drivers/gpu/drm/sti/sti_hqvdp.c
index c6b25f4..d9ff79e 100644 (file)
--- a/drivers/gpu/drm/sti/sti_hqvdp.c
+++ b/drivers/gpu/drm/sti/sti_hqvdp.c
@@ -1215,15 +1215,15 @@ static void sti_hqvdp_atomic_disable(struct drm_plane *drm_plane,
 {
        struct sti_plane *plane = to_sti_plane(drm_plane);
 
-       if (!drm_plane->crtc) {
+       if (!oldstate->crtc) {
                DRM_DEBUG_DRIVER("drm plane:%d not enabled\n",
                                 drm_plane->base.id);
                return;
        }
 
        DRM_DEBUG_DRIVER("CRTC:%d (%s) drm plane:%d (%s)\n",
-                        drm_plane->crtc->base.id,
-                        sti_mixer_to_str(to_sti_mixer(drm_plane->crtc)),
+                        oldstate->crtc->base.id,
+                        sti_mixer_to_str(to_sti_mixer(oldstate->crtc)),
                         drm_plane->base.id, sti_plane_to_str(plane));
 
        plane->status = STI_PLANE_DISABLING;