diff --git a/drivers/usb/mon/mon_bin.c b/drivers/usb/mon/mon_bin.c
index f8d9045d668a15659fadf2af3fecf374623402f5..0f7a30b7d2d16e08f7c63ddc1711833d0667fc15 100644
--- a/drivers/usb/mon/mon_bin.c
+++ b/drivers/usb/mon/mon_bin.c
@@ -1261,7 +1261,7 @@ static int mon_alloc_buff(struct mon_pgmap *map, int npages)
 			return -ENOMEM;
 		}
 		map[n].ptr = (unsigned char *) vaddr;
-		map[n].pg = virt_to_page(vaddr);
+		map[n].pg = virt_to_page((void *) vaddr);
 	}
 	return 0;
 }
diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c
index d55a50da2347f5c2177d3fd5cb0f7db28a7ff71b..a641eb753b8cc92b664966e3a6932c595f07b111 100644
--- a/kernel/perf_counter.c
+++ b/kernel/perf_counter.c
@@ -2020,7 +2020,7 @@ static int perf_mmap_data_alloc(struct perf_counter *counter, int nr_pages)
 
 static void perf_mmap_free_page(unsigned long addr)
 {
-	struct page *page = virt_to_page(addr);
+	struct page *page = virt_to_page((void *)addr);
 
 	page->mapping = NULL;
 	__free_page(page);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index e0f2cdf9d8b1f2a351e409a1699cd3e06dcdc200..ad7cd1c56b07c330d611a067a0749f9cabd440b0 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1983,7 +1983,7 @@ void *alloc_pages_exact(size_t size, gfp_t gfp_mask)
 		unsigned long alloc_end = addr + (PAGE_SIZE << order);
 		unsigned long used = addr + PAGE_ALIGN(size);
 
-		split_page(virt_to_page(addr), order);
+		split_page(virt_to_page((void *)addr), order);
 		while (used < alloc_end) {
 			free_page(used);
 			used += PAGE_SIZE;