diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index 5999156..dd0d99d 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -262,6 +262,9 @@
 #define AC_PINCTL_OUT_EN		(1<<6)
 #define AC_PINCTL_HP_EN			(1<<7)
 
+/* Unsolicited response - 8bit */
+#define AC_USRSP_EN			(1<<7)
+
 /* configuration default - 32bit */
 #define AC_DEFCFG_SEQUENCE		(0xf<<0)
 #define AC_DEFCFG_DEF_ASSOC		(0xf<<4)