diff --git a/drivers/cxl/mem.c b/drivers/cxl/mem.c
index 6d7d3870b5dab5a7d1206cf5a28ebe2898524ea6..df895bcca63a632a94c7c44321e0d395bc38ae66 100644
--- a/drivers/cxl/mem.c
+++ b/drivers/cxl/mem.c
@@ -752,7 +752,10 @@ static int cxl_send_cmd(struct cxl_memdev *cxlmd,
 	if (rc)
 		return rc;
 
-	return copy_to_user(s, &send, sizeof(send));
+	if (copy_to_user(s, &send, sizeof(send)))
+		return -EFAULT;
+
+	return 0;
 }
 
 static long __cxl_memdev_ioctl(struct cxl_memdev *cxlmd, unsigned int cmd,