1 files changed, 24 insertions, 38 deletions

diff --git a/sound/firewire/oxfw/oxfw-midi.c b/sound/firewire/oxfw/oxfw-midi.c
index c215fa6f7a03..a16bf885f918 100644
--- a/sound/firewire/oxfw/oxfw-midi.c
+++ b/sound/firewire/oxfw/oxfw-midi.c
@@ -16,18 +16,16 @@ static int midi_capture_open(struct snd_rawmidi_substream *substream)
 	if (err < 0)
 		return err;
 
-	mutex_lock(&oxfw->mutex);
-
-	err = snd_oxfw_stream_reserve_duplex(oxfw, &oxfw->tx_stream, 0, 0, 0, 0);
-	if (err >= 0) {
-		++oxfw->substreams_count;
-		err = snd_oxfw_stream_start_duplex(oxfw);
-		if (err < 0)
-			--oxfw->substreams_count;
+	scoped_guard(mutex, &oxfw->mutex) {
+		err = snd_oxfw_stream_reserve_duplex(oxfw, &oxfw->tx_stream, 0, 0, 0, 0);
+		if (err >= 0) {
+			++oxfw->substreams_count;
+			err = snd_oxfw_stream_start_duplex(oxfw);
+			if (err < 0)
+				--oxfw->substreams_count;
+		}
 	}
 
-	mutex_unlock(&oxfw->mutex);
-
 	if (err < 0)
 		snd_oxfw_stream_lock_release(oxfw);
 
@@ -43,16 +41,14 @@ static int midi_playback_open(struct snd_rawmidi_substream *substream)
 	if (err < 0)
 		return err;
 
-	mutex_lock(&oxfw->mutex);
-
-	err = snd_oxfw_stream_reserve_duplex(oxfw, &oxfw->rx_stream, 0, 0, 0, 0);
-	if (err >= 0) {
-		++oxfw->substreams_count;
-		err = snd_oxfw_stream_start_duplex(oxfw);
+	scoped_guard(mutex, &oxfw->mutex) {
+		err = snd_oxfw_stream_reserve_duplex(oxfw, &oxfw->rx_stream, 0, 0, 0, 0);
+		if (err >= 0) {
+			++oxfw->substreams_count;
+			err = snd_oxfw_stream_start_duplex(oxfw);
+		}
 	}
 
-	mutex_unlock(&oxfw->mutex);
-
 	if (err < 0)
 		snd_oxfw_stream_lock_release(oxfw);
 
@@ -63,12 +59,10 @@ static int midi_capture_close(struct snd_rawmidi_substream *substream)
 {
 	struct snd_oxfw *oxfw = substream->rmidi->private_data;
 
-	mutex_lock(&oxfw->mutex);
-
-	--oxfw->substreams_count;
-	snd_oxfw_stream_stop_duplex(oxfw);
-
-	mutex_unlock(&oxfw->mutex);
+	scoped_guard(mutex, &oxfw->mutex) {
+		--oxfw->substreams_count;
+		snd_oxfw_stream_stop_duplex(oxfw);
+	}
 
 	snd_oxfw_stream_lock_release(oxfw);
 	return 0;
@@ -78,12 +72,10 @@ static int midi_playback_close(struct snd_rawmidi_substream *substream)
 {
 	struct snd_oxfw *oxfw = substream->rmidi->private_data;
 
-	mutex_lock(&oxfw->mutex);
-
-	--oxfw->substreams_count;
-	snd_oxfw_stream_stop_duplex(oxfw);
-
-	mutex_unlock(&oxfw->mutex);
+	scoped_guard(mutex, &oxfw->mutex) {
+		--oxfw->substreams_count;
+		snd_oxfw_stream_stop_duplex(oxfw);
+	}
 
 	snd_oxfw_stream_lock_release(oxfw);
 	return 0;
@@ -92,9 +84,8 @@ static int midi_playback_close(struct snd_rawmidi_substream *substream)
 static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
 {
 	struct snd_oxfw *oxfw = substrm->rmidi->private_data;
-	unsigned long flags;
 
-	spin_lock_irqsave(&oxfw->lock, flags);
+	guard(spinlock_irqsave)(&oxfw->lock);
 
 	if (up)
 		amdtp_am824_midi_trigger(&oxfw->tx_stream,
@@ -102,16 +93,13 @@ static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
 	else
 		amdtp_am824_midi_trigger(&oxfw->tx_stream,
 					 substrm->number, NULL);
-
-	spin_unlock_irqrestore(&oxfw->lock, flags);
 }
 
 static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
 {
 	struct snd_oxfw *oxfw = substrm->rmidi->private_data;
-	unsigned long flags;
 
-	spin_lock_irqsave(&oxfw->lock, flags);
+	guard(spinlock_irqsave)(&oxfw->lock);
 
 	if (up)
 		amdtp_am824_midi_trigger(&oxfw->rx_stream,
@@ -119,8 +107,6 @@ static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
 	else
 		amdtp_am824_midi_trigger(&oxfw->rx_stream,
 					 substrm->number, NULL);
-
-	spin_unlock_irqrestore(&oxfw->lock, flags);
 }
 
 static void set_midi_substream_names(struct snd_oxfw *oxfw,