diff --git a/shared-core/drm.h b/shared-core/drm.h
index 9efb1dc4..0e3b9b89 100644
--- a/shared-core/drm.h
+++ b/shared-core/drm.h
@@ -61,6 +61,9 @@
 #ifndef __user
 #define __user
 #endif
+#ifndef __iomem
+#define __iomem
+#endif
 
 #ifdef __GNUC__
 # define DEPRECATED  __attribute__ ((deprecated))