9 files changed, 18 insertions, 20 deletions

diff --git a/sound/core/Kconfig b/sound/core/Kconfig
index 3a9afc520d4e..d64dbee36986 100644
--- a/sound/core/Kconfig
+++ b/sound/core/Kconfig
@@ -110,7 +110,7 @@ config SND_PCM_TIMER
           footprint, about 20KB on x86_64 platform.
 
 config SND_SEQUENCER_OSS
-        bool "OSS Sequencer API"
+        tristate "OSS Sequencer API"
         depends on SND_SEQUENCER
         depends on SND_OSSEMUL
         help
diff --git a/sound/core/seq/Makefile b/sound/core/seq/Makefile
index b65fa5a1943b..3283b055e5ff 100644
--- a/sound/core/seq/Makefile
+++ b/sound/core/seq/Makefile
@@ -15,10 +15,9 @@ snd-seq-dummy-objs := seq_dummy.o
 snd-seq-virmidi-objs := seq_virmidi.o
 
 obj-$(CONFIG_SND_SEQUENCER) += snd-seq.o snd-seq-device.o
-ifeq ($(CONFIG_SND_SEQUENCER_OSS),y)
-  obj-$(CONFIG_SND_SEQUENCER) += snd-seq-midi-event.o
-  obj-$(CONFIG_SND_SEQUENCER) += oss/
-endif
+obj-$(CONFIG_SND_SEQUENCER_OSS) += snd-seq-midi-event.o
+obj-$(CONFIG_SND_SEQUENCER_OSS) += oss/
+
 obj-$(CONFIG_SND_SEQ_DUMMY) += snd-seq-dummy.o
 
 # Toplevel Module Dependency
diff --git a/sound/core/seq/oss/Makefile b/sound/core/seq/oss/Makefile
index b38406b8463c..4ea4e3eea6b7 100644
--- a/sound/core/seq/oss/Makefile
+++ b/sound/core/seq/oss/Makefile
@@ -7,4 +7,4 @@ snd-seq-oss-objs  := seq_oss.o seq_oss_init.o seq_oss_timer.o seq_oss_ioctl.o \
                      seq_oss_event.o seq_oss_rw.o seq_oss_synth.o \
                      seq_oss_midi.o seq_oss_readq.o seq_oss_writeq.o
 
-obj-$(CONFIG_SND_SEQUENCER) += snd-seq-oss.o
+obj-$(CONFIG_SND_SEQUENCER_OSS) += snd-seq-oss.o
diff --git a/sound/drivers/opl3/opl3_seq.c b/sound/drivers/opl3/opl3_seq.c
index fdae5d7f421f..d3e91be8b23a 100644
--- a/sound/drivers/opl3/opl3_seq.c
+++ b/sound/drivers/opl3/opl3_seq.c
@@ -252,7 +252,7 @@ static int snd_opl3_seq_probe(struct device *_dev)
         spin_lock_init(&opl3->sys_timer_lock);
         opl3->sys_timer_status = 0;
 
-#ifdef CONFIG_SND_SEQUENCER_OSS
+#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
         snd_opl3_init_seq_oss(opl3, name);
 #endif
         return 0;
@@ -267,7 +267,7 @@ static int snd_opl3_seq_remove(struct device *_dev)
         if (opl3 == NULL)
                 return -EINVAL;
 
-#ifdef CONFIG_SND_SEQUENCER_OSS
+#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
         snd_opl3_free_seq_oss(opl3);
 #endif
         if (opl3->seq_client >= 0) {
diff --git a/sound/drivers/opl3/opl3_voice.h b/sound/drivers/opl3/opl3_voice.h
index a371c075ac87..eaef435e0528 100644
--- a/sound/drivers/opl3/opl3_voice.h
+++ b/sound/drivers/opl3/opl3_voice.h
@@ -44,9 +44,12 @@ void snd_opl3_load_drums(struct snd_opl3 *opl3);
 void snd_opl3_drum_switch(struct snd_opl3 *opl3, int note, int on_off, int vel, struct snd_midi_channel *chan);
 
 /* Prototypes for opl3_oss.c */
-#ifdef CONFIG_SND_SEQUENCER_OSS
+#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
 void snd_opl3_init_seq_oss(struct snd_opl3 *opl3, char *name);
 void snd_opl3_free_seq_oss(struct snd_opl3 *opl3);
+#else
+#define snd_opl3_init_seq_oss(opl3, name) /* NOP */
+#define snd_opl3_free_seq_oss(opl3) /* NOP */
 #endif
 
 #endif
diff --git a/sound/isa/sb/emu8000_callback.c b/sound/isa/sb/emu8000_callback.c
index 72a9ac5efb40..d28d712f99f4 100644
--- a/sound/isa/sb/emu8000_callback.c
+++ b/sound/isa/sb/emu8000_callback.c
@@ -36,7 +36,7 @@ static void reset_voice(struct snd_emux *emu, int ch);
 static void terminate_voice(struct snd_emux_voice *vp);
 static void sysex(struct snd_emux *emu, char *buf, int len, int parsed,
                   struct snd_midi_channel_set *chset);
-#ifdef CONFIG_SND_SEQUENCER_OSS
+#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
 static int oss_ioctl(struct snd_emux *emu, int cmd, int p1, int p2);
 #endif
 static int load_fx(struct snd_emux *emu, int type, int mode,
@@ -76,7 +76,7 @@ static struct snd_emux_operators emu8000_ops = {
         .sample_reset = snd_emu8000_sample_reset,
         .load_fx =      load_fx,
         .sysex =        sysex,
-#ifdef CONFIG_SND_SEQUENCER_OSS
+#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
         .oss_ioctl =    oss_ioctl,
 #endif
 };
@@ -477,7 +477,7 @@ sysex(struct snd_emux *emu, char *buf, int len, int parsed, struct snd_midi_chan
 }
 
 
-#ifdef CONFIG_SND_SEQUENCER_OSS
+#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
 /*
  * OSS ioctl callback
  */
diff --git a/sound/synth/emux/emux.c b/sound/synth/emux/emux.c
index 9312cd8a6fdd..b9981e8c0027 100644
--- a/sound/synth/emux/emux.c
+++ b/sound/synth/emux/emux.c
@@ -47,7 +47,7 @@ int snd_emux_new(struct snd_emux **remu)
         mutex_init(&emu->register_mutex);
 
         emu->client = -1;
-#ifdef CONFIG_SND_SEQUENCER_OSS
+#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
         emu->oss_synth = NULL;
 #endif
         emu->max_voices = 0;
@@ -123,7 +123,7 @@ int snd_emux_register(struct snd_emux *emu, struct snd_card *card, int index, ch
         snd_emux_init_voices(emu);
 
         snd_emux_init_seq(emu, card, index);
-#ifdef CONFIG_SND_SEQUENCER_OSS
+#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
         snd_emux_init_seq_oss(emu);
 #endif
         snd_emux_init_virmidi(emu, card);
@@ -150,7 +150,7 @@ int snd_emux_free(struct snd_emux *emu)
 
         snd_emux_proc_free(emu);
         snd_emux_delete_virmidi(emu);
-#ifdef CONFIG_SND_SEQUENCER_OSS
+#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
         snd_emux_detach_seq_oss(emu);
 #endif
         snd_emux_detach_seq(emu);
diff --git a/sound/synth/emux/emux_effect.c b/sound/synth/emux/emux_effect.c
index a447218b6160..9ac0bf531b4b 100644
--- a/sound/synth/emux/emux_effect.c
+++ b/sound/synth/emux/emux_effect.c
@@ -150,7 +150,7 @@ effect_get_offset(struct snd_midi_channel *chan, int lo, int hi, int mode)
         return addr;
 }
 
-#ifdef CONFIG_SND_SEQUENCER_OSS
+#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
 /* change effects - for OSS sequencer compatibility */
 void
 snd_emux_send_effect_oss(struct snd_emux_port *port,
diff --git a/sound/synth/emux/emux_oss.c b/sound/synth/emux/emux_oss.c
index 850fab4a8f3b..de19e108974a 100644
--- a/sound/synth/emux/emux_oss.c
+++ b/sound/synth/emux/emux_oss.c
@@ -23,8 +23,6 @@
  */
 
 
-#ifdef CONFIG_SND_SEQUENCER_OSS
-
 #include <linux/export.h>
 #include <linux/uaccess.h>
 #include <sound/core.h>
@@ -505,5 +503,3 @@ fake_event(struct snd_emux *emu, struct snd_emux_port *port, int ch, int param,
         ev.data.control.value = val;
         snd_emux_event_input(&ev, 0, port, atomic, hop);
 }
-
-#endif /* CONFIG_SND_SEQUENCER_OSS */