diff --git a/lib/ioremap.c b/lib/ioremap.c
index 4bb30206b9426f1fcece4324cc0dfe76b8855c65..c835f9080c43c67d9b71086741b4977e5efe290f 100644
--- a/lib/ioremap.c
+++ b/lib/ioremap.c
@@ -161,6 +161,7 @@ int ioremap_page_range(unsigned long addr,
 	unsigned long next;
 	int err;
 
+	might_sleep();
 	BUG_ON(addr >= end);
 
 	start = addr;