diff --git a/arch/csky/kernel/vdso.c b/arch/csky/kernel/vdso.c
index 92ab8ac6a596..c54d019d66bc 100644
--- a/arch/csky/kernel/vdso.c
+++ b/arch/csky/kernel/vdso.c
@@ -82,10 +82,3 @@ int arch_setup_additional_pages(struct linux_binprm *bprm,
 	mmap_write_unlock(mm);
 	return ret;
 }
-
-const char *arch_vma_name(struct vm_area_struct *vma)
-{
-	if (vma->vm_mm && (vma->vm_start == (long)vma->vm_mm->context.vdso))
-		return "[vdso]";
-	return NULL;
-}