drm/tegra: Use __drm_atomic_helper_reset_connector for subclassing connector state, v2.

Changes since v1:
- Do not reset if state allocation fails.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Thierry Reding <treding@nvidia.com> #irc
Link: http://patchwork.freedesktop.org/patch/msgid/1451908400-25147-3-git-send-email-maarten.lankhorst@linux.intel.com
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 6 insertions, 7 deletions

diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c
index 50d46ae3786b..44e102799195 100644
--- a/drivers/gpu/drm/tegra/dsi.c
+++ b/drivers/gpu/drm/tegra/dsi.c
@@ -745,14 +745,13 @@ static void tegra_dsi_soft_reset(struct tegra_dsi *dsi)
 
 static void tegra_dsi_connector_reset(struct drm_connector *connector)
 {
-        struct tegra_dsi_state *state;
-
-        kfree(connector->state);
-        connector->state = NULL;
+        struct tegra_dsi_state *state =
+                kzalloc(sizeof(*state), GFP_KERNEL);
 
-        state = kzalloc(sizeof(*state), GFP_KERNEL);
-        if (state)
-                connector->state = &state->base;
+        if (state) {
+                kfree(connector->state);
+                __drm_atomic_helper_connector_reset(connector, &state->base);
+        }
 }
 
 static struct drm_connector_state *