diff --git a/mm/memory.c b/mm/memory.c
index c252aae..1d647ab 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1455,7 +1455,7 @@
 	pte_t *pte;
 	int err;
 	struct page *pmd_page;
-	spinlock_t *ptl = ptl;		/* Suppress gcc warning */
+	spinlock_t *uninitialized_var(ptl);
 
 	pte = (mm == &init_mm) ?
 		pte_alloc_kernel(pmd, addr) :