X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=drivers%2Fgpu%2Fdrm%2Frockchip%2Frockchip_drm_gem.c;h=a6d9104f7f157f55426843690dee62c00e97cb4b;hb=648a4ce7ca209db92db5c3cecb05c14d147a2e6a;hp=eba5f8a52fbd9ff2bf7941687f54e11320cb10b3;hpb=9bca4df258735087f37568feaca694913f1b5a5f;p=firefly-linux-kernel-4.4.55.git

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
index eba5f8a52fbd..a6d9104f7f15 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
@@ -200,13 +200,10 @@ int rockchip_gem_dumb_map_offset(struct drm_file *file_priv,
 	struct drm_gem_object *obj;
 	int ret;
 
-	mutex_lock(&dev->struct_mutex);
-
 	obj = drm_gem_object_lookup(dev, file_priv, handle);
 	if (!obj) {
 		DRM_ERROR("failed to lookup gem object.\n");
-		ret = -EINVAL;
-		goto unlock;
+		return -EINVAL;
 	}
 
 	ret = drm_gem_create_mmap_offset(obj);
@@ -217,10 +214,9 @@ int rockchip_gem_dumb_map_offset(struct drm_file *file_priv,
 	DRM_DEBUG_KMS("offset = 0x%llx\n", *offset);
 
 out:
-	drm_gem_object_unreference(obj);
-unlock:
-	mutex_unlock(&dev->struct_mutex);
-	return ret;
+	drm_gem_object_unreference_unlocked(obj);
+
+	return 0;
 }
 
 /*