--- a/drivers/media/usb/hackrf/hackrf.c
+++ b/drivers/media/usb/hackrf/hackrf.c
@@ -23,6 +23,7 @@
 #include <media/v4l2-event.h>
 #include <media/videobuf2-v4l2.h>
 #include <media/videobuf2-vmalloc.h>
+#include <linux/mm.h>
 
 /*
  * Used Avago MGA-81563 RF amplifier could be destroyed pretty easily with too