diff --git a/drivers/staging/android/ion/ion_heap.c b/drivers/staging/android/ion/ion_heap.c
index 37a1d9226516..e102f6a2ecf6 100644
--- a/drivers/staging/android/ion/ion_heap.c
+++ b/drivers/staging/android/ion/ion_heap.c
@@ -205,50 +205,6 @@ int ion_heap_map_user(struct ion_heap *heap, struct ion_buffer *buffer,
 }
 EXPORT_SYMBOL_GPL(ion_heap_map_user);
 
-static int ion_heap_clear_pages(struct page **pages, int num, pgprot_t pgprot)
-{
-	void *addr = vmap(pages, num, VM_MAP, pgprot);
-
-	if (!addr)
-		return -ENOMEM;
-	memset(addr, 0, PAGE_SIZE * num);
-	vunmap(addr);
-
-	return 0;
-}
-
-static int ion_heap_sglist_zero(struct scatterlist *sgl, unsigned int nents,
-				pgprot_t pgprot)
-{
-	int p = 0;
-	int ret = 0;
-	struct sg_page_iter piter;
-	struct page *pages[32];
-
-	for_each_sg_page(sgl, &piter, nents, 0) {
-		pages[p++] = sg_page_iter_page(&piter);
-		if (p == ARRAY_SIZE(pages)) {
-			ret = ion_heap_clear_pages(pages, p, pgprot);
-			if (ret)
-				return ret;
-			p = 0;
-		}
-	}
-	if (p)
-		ret = ion_heap_clear_pages(pages, p, pgprot);
-
-	return ret;
-}
-
-int ion_heap_pages_zero(struct page *page, size_t size, pgprot_t pgprot)
-{
-	struct scatterlist sg;
-
-	sg_init_table(&sg, 1);
-	sg_set_page(&sg, page, size, 0);
-	return ion_heap_sglist_zero(&sg, 1, pgprot);
-}
-
 void ion_heap_freelist_add(struct ion_heap *heap, struct ion_buffer *buffer)
 {
 	spin_lock(&heap->free_lock);