diff --git a/arch/csky/kernel/vdso.c b/arch/csky/kernel/vdso.c
index e74a2504d331..2ca886e4a458 100644
--- a/arch/csky/kernel/vdso.c
+++ b/arch/csky/kernel/vdso.c
@@ -15,14 +15,8 @@ extern char vdso_start[], vdso_end[];
 static unsigned int vdso_pages;
 static struct page **vdso_pagelist;
 
-/*
- * The vDSO data page.
- */
-static union {
-	struct vdso_data	data;
-	u8			page[PAGE_SIZE];
-} vdso_data_store __page_aligned_data;
-struct vdso_data *vdso_data = &vdso_data_store.data;
+static union vdso_data_store vdso_data_store __page_aligned_data;
+struct vdso_data *vdso_data = vdso_data_store.data;
 
 static int __init vdso_init(void)
 {