[PATCH v2 13/16] drm/omapdrm: Switch private_obj initialization to atomic_create_state

[Maxime Ripard <mripard@kernel.org>]

The omapdrm driver relies on a drm_private_obj, that is initialized by
allocating and initializing a state, and then passing it to
drm_private_obj_init.

Since we're gradually moving away from that pattern to the more
established one relying on a atomic_create_state implementation, let's
migrate this instance to the new pattern.

Signed-off-by: Maxime Ripard <mripard@kernel.org>
---

Cc: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
---
 drivers/gpu/drm/omapdrm/omap_drv.c | 22 ++++++++++++++++------
 1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c
index 794267f0f007850e43949f93be5c98d0e32a84ea..7a2d7aa5438a519c876033801da5cd5c411bd5fa 100644
--- a/drivers/gpu/drm/omapdrm/omap_drv.c
+++ b/drivers/gpu/drm/omapdrm/omap_drv.c
@@ -272,25 +272,35 @@ static void omap_global_destroy_state(struct drm_private_obj *obj,
 	struct omap_global_state *omap_state = to_omap_global_state(state);
 
 	kfree(omap_state);
 }
 
+static struct drm_private_state *
+omap_global_atomic_create_state(struct drm_private_obj *obj)
+{
+	struct omap_global_state *state;
+
+	state = kzalloc(sizeof(*state), GFP_KERNEL);
+	if (!state)
+		return ERR_PTR(-ENOMEM);
+
+	__drm_atomic_helper_private_obj_create_state(obj, &state->base);
+
+	return &state->base;
+}
+
 static const struct drm_private_state_funcs omap_global_state_funcs = {
+	.atomic_create_state = omap_global_atomic_create_state,
 	.atomic_duplicate_state = omap_global_duplicate_state,
 	.atomic_destroy_state = omap_global_destroy_state,
 };
 
 static int omap_global_obj_init(struct drm_device *dev)
 {
 	struct omap_drm_private *priv = dev->dev_private;
-	struct omap_global_state *state;
 
-	state = kzalloc(sizeof(*state), GFP_KERNEL);
-	if (!state)
-		return -ENOMEM;
-
-	drm_atomic_private_obj_init(dev, &priv->glob_obj, &state->base,
+	drm_atomic_private_obj_init(dev, &priv->glob_obj, NULL,
 				    &omap_global_state_funcs);
 	return 0;
 }
 
 static void omap_global_obj_fini(struct omap_drm_private *priv)

-- 
2.51.0