diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c
index 56b8b4cff99c..fff8c7cf0e3e 100644
--- a/arch/blackfin/kernel/setup.c
+++ b/arch/blackfin/kernel/setup.c
@@ -13,6 +13,7 @@
 #include <linux/bootmem.h>
 #include <linux/seq_file.h>
 #include <linux/cpu.h>
+#include <linux/mm.h>
 #include <linux/module.h>
 #include <linux/tty.h>
 #include <linux/pfn.h>