diff --git a/drivers/media/video/pwc/pwc.h b/drivers/media/video/pwc/pwc.h
index 835db149a3b149157a901683e941cf47765b2ede..74178754b39b874dc049c3fc630f78d1c97601b1 100644
--- a/drivers/media/video/pwc/pwc.h
+++ b/drivers/media/video/pwc/pwc.h
@@ -32,6 +32,7 @@
 #include <linux/smp_lock.h>
 #include <linux/version.h>
 #include <linux/mutex.h>
+#include <linux/mm.h>
 #include <asm/errno.h>
 #include <linux/videodev.h>
 #include <media/v4l2-common.h>