diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index db23200..2f646fe 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -2,6 +2,7 @@
 #include <linux/pci.h>
 #include <linux/module.h>
 #include <linux/sched.h>
+#include <linux/slab.h>
 #include <linux/ioport.h>
 #include <linux/wait.h>