[PATCH 10/17] drm: allow FB's in drm_mode_object_find

[Rob Clark]

We do actually want to permit FB's in atomic case, since FB will be
looked up like any other object property value in a few code paths
(like property value validation).

So split out into an internal function without the WARN_ON() which
we can use in those special cases.

Signed-off-by: Rob Clark <robdclark at gmail.com>
---
 drivers/gpu/drm/drm_crtc.c | 33 ++++++++++++++++++++++-----------
 include/drm/drm_crtc.h     |  6 ------
 2 files changed, 22 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 9b95601..48555724 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -443,6 +443,21 @@ void drm_mode_object_put(struct drm_device *dev,
 	mutex_unlock(&dev->mode_config.idr_mutex);
 }
 
+static struct drm_mode_object *_object_find(struct drm_device *dev,
+		uint32_t id, uint32_t type)
+{
+	struct drm_mode_object *obj = NULL;
+
+	mutex_lock(&dev->mode_config.idr_mutex);
+	obj = idr_find(&dev->mode_config.crtc_idr, id);
+	if (!obj || (type != DRM_MODE_OBJECT_ANY && obj->type != type) ||
+	    (obj->id != id))
+		obj = NULL;
+	mutex_unlock(&dev->mode_config.idr_mutex);
+
+	return obj;
+}
+
 /**
  * drm_mode_object_find - look up a drm object with static lifetime
  * @dev: drm device
@@ -455,23 +470,19 @@ void drm_mode_object_put(struct drm_device *dev,
 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
 		uint32_t id, uint32_t type)
 {
-	struct drm_mode_object *obj = NULL;
-
 	/* Framebuffers are reference counted and need their own lookup
 	 * function.*/
 	WARN_ON(type == DRM_MODE_OBJECT_FB);
-
-	mutex_lock(&dev->mode_config.idr_mutex);
-	obj = idr_find(&dev->mode_config.crtc_idr, id);
-	if (!obj || (type != DRM_MODE_OBJECT_ANY && obj->type != type) ||
-	    (obj->id != id))
-		obj = NULL;
-	mutex_unlock(&dev->mode_config.idr_mutex);
-
-	return obj;
+	return _object_find(dev, id, type);
 }
 EXPORT_SYMBOL(drm_mode_object_find);
 
+static struct drm_mode_object *
+drm_property_get_obj(struct drm_property *property, uint64_t value)
+{
+	return _object_find(property->dev, value, property->values[0]);
+}
+
 /**
  * drm_framebuffer_init - initialize a framebuffer
  * @dev: DRM device
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 31ed7c6..547b75a 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -1033,12 +1033,6 @@ extern int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
 extern struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
 		uint32_t id, uint32_t type);
 
-static inline struct drm_mode_object *
-drm_property_get_obj(struct drm_property *property, uint64_t value)
-{
-	return drm_mode_object_find(property->dev, value, property->values[0]);
-}
-
 /* IOCTLs */
 extern int drm_mode_getresources(struct drm_device *dev,
 				 void *data, struct drm_file *file_priv);
-- 
1.9.0