drm: Remove drm_mode_object->atomic_count

It's only used in drm_mode_object_get_properties, and we can compute
it there directly with a bit of code shuffling.
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20160829082757.17913-4-daniel.vetter@ffwll.ch

drivers/gpu/drm/drm_mode_object.c

@@ -209,8 +209,6 @@ void drm_object_attach_property(struct drm_mode_object *obj,
 	obj->properties->properties[count] = property;
 	obj->properties->values[count] = init_val;
 	obj->properties->count++;
-	if (property->flags & DRM_MODE_PROP_ATOMIC)
-		obj->properties->atomic_count++;
 }
 EXPORT_SYMBOL(drm_object_attach_property);
 
@@ -288,35 +286,30 @@ int drm_mode_object_get_properties(struct drm_mode_object *obj, bool atomic,
 				   uint64_t __user *prop_values,
 				   uint32_t *arg_count_props)
 {
-	int props_count;
-	int i, ret, copied;
+	int i, ret, count;
 
-	props_count = obj->properties->count;
-	if (!atomic)
-		props_count -= obj->properties->atomic_count;
-
-	if ((*arg_count_props >= props_count) && props_count) {
-		for (i = 0, copied = 0; copied < props_count; i++) {
+	for (i = 0, count = 0; i < obj->properties->count; i++) {
 		struct drm_property *prop = obj->properties->properties[i];
 		uint64_t val;
 
 		if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
 			continue;
 
+		if (*arg_count_props > count) {
 			ret = drm_object_property_get_value(obj, prop, &val);
 			if (ret)
 				return ret;
 
-			if (put_user(prop->base.id, prop_ptr + copied))
+			if (put_user(prop->base.id, prop_ptr + count))
 				return -EFAULT;
 
-			if (put_user(val, prop_values + copied))
+			if (put_user(val, prop_values + count))
 				return -EFAULT;
-
-			copied++;
 		}
+
+		count++;
 	}
-	*arg_count_props = props_count;
+	*arg_count_props = count;
 
 	return 0;
 }

include/drm/drm_mode_object.h

@@ -37,7 +37,7 @@ struct drm_mode_object {
 
 #define DRM_OBJECT_MAX_PROPERTY 24
 struct drm_object_properties {
-	int count, atomic_count;
+	int count;
 	/* NOTE: if we ever start dynamically destroying properties (ie.
 	 * not at drm_mode_config_cleanup() time), then we'd have to do
 	 * a better job of detaching property from mode objects to avoid