diff --git a/drivers/char/drm/drm_sysfs.c b/drivers/char/drm/drm_sysfs.c
index ba4b8de..cc8e2eb 100644
--- a/drivers/char/drm/drm_sysfs.c
+++ b/drivers/char/drm/drm_sysfs.c
@@ -45,8 +45,8 @@
 	int err;
 
 	class = class_create(owner, name);
-	if (!class) {
-		err = -ENOMEM;
+	if (IS_ERR(class)) {
+		err = PTR_ERR(class);
 		goto err_out;
 	}
 
@@ -113,8 +113,8 @@
 					MKDEV(DRM_MAJOR, head->minor),
 					&(head->dev->pdev)->dev,
 					"card%d", head->minor);
-	if (!class_dev) {
-		err = -ENOMEM;
+	if (IS_ERR(class_dev)) {
+		err = PTR_ERR(class_dev);
 		goto err_out;
 	}