diff --git a/include/sound/emux_synth.h b/include/sound/emux_synth.h
index a0a40b74bf13ed8a954bb2595ccaa73c6237dbdd..19a0cb561ffc1c4921e7ac138fc88850b41d4ba0 100644
--- a/include/sound/emux_synth.h
+++ b/include/sound/emux_synth.h
@@ -25,9 +25,7 @@
#include <sound/seq_device.h>
#include <sound/soundfont.h>
#include <sound/seq_midi_emul.h>
-#ifdef CONFIG_SND_SEQUENCER_OSS
#include <sound/seq_oss.h>
-#endif
#include <sound/emux_legacy.h>
#include <sound/seq_virmidi.h>
@@ -66,7 +64,7 @@ struct snd_emux_operators {
const void __user *data, long count);
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)
int (*oss_ioctl)(struct snd_emux *emu, int cmd, int p1, int p2);
#endif
};
@@ -129,7 +127,7 @@ struct snd_emux {
struct snd_info_entry *proc;
#endif
-#ifdef CONFIG_SND_SEQUENCER_OSS
+#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
struct snd_seq_device *oss_synth;
#endif
};
@@ -150,7 +148,7 @@ struct snd_emux_port {
#ifdef SNDRV_EMUX_USE_RAW_EFFECT
struct snd_emux_effect_table *effect;
#endif
-#ifdef CONFIG_SND_SEQUENCER_OSS
+#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
struct snd_seq_oss_arg *oss_arg;
#endif
};
diff --git a/include/sound/opl3.h b/include/sound/opl3.h
index 5a87641c6ae45f9ae688c9e8054320b0cf195ea1..a4a593590cff9f0058aec11958bd9931db816780 100644
--- a/include/sound/opl3.h
+++ b/include/sound/opl3.h
@@ -55,10 +55,8 @@
#include <sound/hwdep.h>
#include <sound/timer.h>
#include <sound/seq_midi_emul.h>
-#ifdef CONFIG_SND_SEQUENCER_OSS
#include <sound/seq_oss.h>
#include <sound/seq_oss_legacy.h>
-#endif
#include <sound/seq_device.h>
#include <sound/asound_fm.h>
@@ -330,7 +328,7 @@ struct snd_opl3 {
struct snd_seq_device *seq_dev; /* sequencer device */
struct snd_midi_channel_set * chset;
-#ifdef CONFIG_SND_SEQUENCER_OSS
+#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
struct snd_seq_device *oss_seq_dev; /* OSS sequencer device */
struct snd_midi_channel_set * oss_chset;
#endif
diff --git a/sound/core/Kconfig b/sound/core/Kconfig
index 3a9afc520d4e7661239365edbcb05e515790208c..d64dbee36986132fad548b35d4995cccb6adcc64 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 b65fa5a1943b28e6525c890777f29bb1a47d3750..3283b055e5fff744080ac62f3d74dfa83a1e84f3 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-$(CONFIG_SND_SEQ_DUMMY) += snd-seq-dummy.o
# Toplevel Module Dependency
diff --git a/sound/core/seq/oss/Makefile b/sound/core/seq/oss/Makefile
index b38406b8463ca95b5e2f844bef9cb1f672def92c..4ea4e3eea6b7982bc4dca5526680b693c9bec46c 100644
--- a/sound/core/seq/oss/Makefile
+++ b/sound/core/seq/oss/Makefile
@@ -7,4 +7,4 @@ snd-seq-oss-objs := seq_oss.o seq_oss_init.o seq_oss_timer.o seq_oss_ioctl.o \
seq_oss_event.o seq_oss_rw.o seq_oss_synth.o \
seq_oss_midi.o seq_oss_readq.o seq_oss_writeq.o
-obj-$(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 fdae5d7f421ff76c119606ca04e909f58f76be0d..d3e91be8b23a56f9e08e7c5cabbd83fd82ad7c09 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 a371c075ac87b361cf14233a9f96de551dd13264..eaef435e0528da8c8112bf5ccfed99d7b634dc54 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 72a9ac5efb4061360d539fb1ed13300033f13d95..d28d712f99f4266367960814e91cdfab74c3b342 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 9312cd8a6fdd11b6c9749e97e0fee3b8ce9f0000..b9981e8c002729e33a255bcb9a55e387d39ba22b 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 a447218b61602ab6e0a944fe8c43a4cad6e5e977..9ac0bf531b4b2ef1df29e6e034f1a8b5e830f290 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 850fab4a8f3b5d4a17f51f9a4521fbd0cf624709..de19e108974a432ec9f796f6c8dc5a1b99dec707 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 */