diff --git a/include/sound/ac97_codec.h b/include/sound/ac97_codec.h
index 049edc5..9c309da 100644
--- a/include/sound/ac97_codec.h
+++ b/include/sound/ac97_codec.h
@@ -505,6 +505,7 @@
 			unsigned short pcmreg[3];	// PCM registers
 			unsigned short codec_cfg[3];	// CODEC_CFG bits
 			unsigned char swap_mic_linein;	// AD1986/AD1986A only
+			unsigned char lo_as_master;	/* LO as master */
 		} ad18xx;
 		unsigned int dev_flags;		/* device specific */
 	} spec;