diff --git a/include/sound/opl3.h b/include/sound/opl3.h
index a0c5febdc4ea..6ba670707831 100644
--- a/include/sound/opl3.h
+++ b/include/sound/opl3.h
@@ -370,12 +370,13 @@ int snd_opl3_hwdep_new(struct snd_opl3 * opl3, int device, int seq_device,
 int snd_opl3_open(struct snd_hwdep * hw, struct file *file);
 int snd_opl3_ioctl(struct snd_hwdep * hw, struct file *file,
 		   unsigned int cmd, unsigned long arg);
-long snd_opl3_write(struct snd_hwdep *hw, const char __user *buf, long count,
-		    loff_t *offset);
 int snd_opl3_release(struct snd_hwdep * hw, struct file *file);
 
 void snd_opl3_reset(struct snd_opl3 * opl3);
 
+#if defined(CONFIG_SND_SEQUENCER) || defined(CONFIG_SND_SEQUENCER_MODULE)
+long snd_opl3_write(struct snd_hwdep *hw, const char __user *buf, long count,
+		    loff_t *offset);
 int snd_opl3_load_patch(struct snd_opl3 *opl3,
 			int prog, int bank, int type,
 			const char *name,
@@ -384,5 +385,9 @@ int snd_opl3_load_patch(struct snd_opl3 *opl3,
 struct fm_patch *snd_opl3_find_patch(struct snd_opl3 *opl3, int prog, int bank,
 				     int create_patch);
 void snd_opl3_clear_patches(struct snd_opl3 *opl3);
+#else
+#define snd_opl3_write	NULL
+static inline void snd_opl3_clear_patches(struct snd_opl3 *opl3) {}
+#endif
 
 #endif /* __SOUND_OPL3_H */
diff --git a/sound/drivers/opl3/opl3_synth.c b/sound/drivers/opl3/opl3_synth.c
index a7bf7a4b1f85..fb64c890109b 100644
--- a/sound/drivers/opl3/opl3_synth.c
+++ b/sound/drivers/opl3/opl3_synth.c
@@ -22,6 +22,10 @@
 #include <sound/opl3.h>
 #include <sound/asound_fm.h>
 
+#if defined(CONFIG_SND_SEQUENCER) || defined(CONFIG_SND_SEQUENCER_MODULE)
+#define OPL3_SUPPORT_SYNTH
+#endif
+
 /*
  *    There is 18 possible 2 OP voices
  *      (9 in the left and 9 in the right).
@@ -155,9 +159,11 @@ int snd_opl3_ioctl(struct snd_hwdep * hw, struct file *file,
 #endif
 		return snd_opl3_set_connection(opl3, (int) arg);
 
+#ifdef OPL3_SUPPORT_SYNTH
 	case SNDRV_DM_FM_IOCTL_CLEAR_PATCHES:
 		snd_opl3_clear_patches(opl3);
 		return 0;
+#endif
 
 #ifdef CONFIG_SND_DEBUG
 	default:
@@ -178,6 +184,7 @@ int snd_opl3_release(struct snd_hwdep * hw, struct file *file)
 	return 0;
 }
 
+#ifdef OPL3_SUPPORT_SYNTH
 /*
  * write the device - load patches
  */
@@ -341,6 +348,7 @@ void snd_opl3_clear_patches(struct snd_opl3 *opl3)
 	}
 	memset(opl3->patch_table, 0, sizeof(opl3->patch_table));
 }
+#endif /* OPL3_SUPPORT_SYNTH */
 
 /* ------------------------------ */