diff --git a/sound/pci/hda/patch_ca0132.c b/sound/pci/hda/patch_ca0132.c
index 3e978b75be9a..f2cabfdced05 100644
--- a/sound/pci/hda/patch_ca0132.c
+++ b/sound/pci/hda/patch_ca0132.c
@@ -31,6 +31,7 @@
 #include <linux/types.h>
 #include <linux/io.h>
 #include <linux/pci.h>
+#include <asm/io.h>
 #include <sound/core.h>
 #include "hda_codec.h"
 #include "hda_local.h"