ALSA: emu10k1: Use guard() for spin locks

Clean up the code using guard() for spin locks.

Merely code refactoring, and no behavior change.

Signed-off-by: Takashi Iwai <[e-mail]>
Link: https://patch.msgid.link/[e-mail]

sound/pci/emu10k1/emu10k1_main.c

···
 {
 	struct snd_ctl_elem_id id;
 
-	spin_lock_irq(&emu->reg_lock);
-	// This is the only thing that can actually happen.
-	emu->emu1010.clock_source = emu->emu1010.clock_fallback;
-	emu->emu1010.wclock = 1 - emu->emu1010.clock_source;
-	snd_emu1010_update_clock(emu);
-	spin_unlock_irq(&emu->reg_lock);
+	scoped_guard(spinlock_irq, &emu->reg_lock) {
+		// This is the only thing that can actually happen.
+		emu->emu1010.clock_source = emu->emu1010.clock_fallback;
+		emu->emu1010.wclock = 1 - emu->emu1010.clock_source;
+		snd_emu1010_update_clock(emu);
+	}
 	snd_ctl_build_ioff(&id, emu->ctl_clock_source, 0);
 	snd_ctl_notify(emu->card, SNDRV_CTL_EVENT_MASK_VALUE, &id);
 }

sound/pci/emu10k1/emu10k1_synth.c

···
 		return -ENOMEM;
 	}
 
-	spin_lock_irq(&hw->voice_lock);
+	guard(spinlock_irq)(&hw->voice_lock);
 	hw->synth = emux;
 	hw->get_synth_voice = snd_emu10k1_synth_get_voice;
-	spin_unlock_irq(&hw->voice_lock);
 
 	dev->driver_data = emux;
 
···
 	emux = dev->driver_data;
 
 	hw = emux->hw;
-	spin_lock_irq(&hw->voice_lock);
-	hw->synth = NULL;
-	hw->get_synth_voice = NULL;
-	spin_unlock_irq(&hw->voice_lock);
+	scoped_guard(spinlock_irq, &hw->voice_lock) {
+		hw->synth = NULL;
+		hw->get_synth_voice = NULL;
+	}
 
 	snd_emux_free(emux);
 	return 0;

sound/pci/emu10k1/emufx.c

···
 					    void *private_data,
 					    struct snd_emu10k1_fx8010_irq *irq)
 {
-	unsigned long flags;
-	
 	irq->handler = handler;
 	irq->gpr_running = gpr_running;
 	irq->private_data = private_data;
 	irq->next = NULL;
-	spin_lock_irqsave(&emu->fx8010.irq_lock, flags);
+	guard(spinlock_irqsave)(&emu->fx8010.irq_lock);
 	if (emu->fx8010.irq_handlers == NULL) {
 		emu->fx8010.irq_handlers = irq;
 		emu->dsp_interrupt = snd_emu10k1_fx8010_interrupt;
···
 		irq->next = emu->fx8010.irq_handlers;
 		emu->fx8010.irq_handlers = irq;
 	}
-	spin_unlock_irqrestore(&emu->fx8010.irq_lock, flags);
 	return 0;
 }
 
···
 					      struct snd_emu10k1_fx8010_irq *irq)
 {
 	struct snd_emu10k1_fx8010_irq *tmp;
-	unsigned long flags;
 	
-	spin_lock_irqsave(&emu->fx8010.irq_lock, flags);
+	guard(spinlock_irqsave)(&emu->fx8010.irq_lock);
 	tmp = emu->fx8010.irq_handlers;
 	if (tmp == irq) {
 		emu->fx8010.irq_handlers = tmp->next;
···
 		if (tmp)
 			tmp->next = tmp->next->next;
 	}
-	spin_unlock_irqrestore(&emu->fx8010.irq_lock, flags);
 	return 0;
 }
 
···
 				 struct snd_emu10k1_fx8010_pcm_rec *ipcm)
 {
 	unsigned int i;
-	int err = 0;
 	struct snd_emu10k1_fx8010_pcm *pcm;
 
 	if (ipcm->substream >= EMU10K1_FX8010_PCM_COUNT)
···
 		return -EINVAL;
 	pcm = &emu->fx8010.pcm[ipcm->substream];
 	guard(mutex)(&emu->fx8010.lock);
-	spin_lock_irq(&emu->reg_lock);
-	if (pcm->opened) {
-		err = -EBUSY;
-		goto __error;
-	}
+	guard(spinlock_irq)(&emu->reg_lock);
+	if (pcm->opened)
+		return -EBUSY;
 	if (ipcm->channels == 0) {	/* remove */
 		pcm->valid = 0;
 	} else {
 		/* FIXME: we need to add universal code to the PCM transfer routine */
-		if (ipcm->channels != 2) {
-			err = -EINVAL;
-			goto __error;
-		}
+		if (ipcm->channels != 2)
+			return -EINVAL;
 		pcm->valid = 1;
 		pcm->opened = 0;
 		pcm->channels = ipcm->channels;
···
 		for (i = 0; i < pcm->channels; i++)
 			pcm->etram[i] = ipcm->etram[i];
 	}
-      __error:
-	spin_unlock_irq(&emu->reg_lock);
-	return err;
+	return 0;
 }
 
 static int snd_emu10k1_ipcm_peek(struct snd_emu10k1 *emu,
 				 struct snd_emu10k1_fx8010_pcm_rec *ipcm)
 {
 	unsigned int i;
-	int err = 0;
 	struct snd_emu10k1_fx8010_pcm *pcm;
 
 	if (ipcm->substream >= EMU10K1_FX8010_PCM_COUNT)
···
 					     EMU10K1_FX8010_PCM_COUNT);
 	pcm = &emu->fx8010.pcm[ipcm->substream];
 	guard(mutex)(&emu->fx8010.lock);
-	spin_lock_irq(&emu->reg_lock);
+	guard(spinlock_irq)(&emu->reg_lock);
 	ipcm->channels = pcm->channels;
 	ipcm->tram_start = pcm->tram_start;
 	ipcm->buffer_size = pcm->buffer_size;
···
 		ipcm->etram[i] = pcm->etram[i];
 	ipcm->res1 = ipcm->res2 = 0;
 	ipcm->pad = 0;
-	spin_unlock_irq(&emu->reg_lock);
-	return err;
+	return 0;
 }
 
 #define SND_EMU10K1_GPR_CONTROLS	44
···
 	}
 	if ((emu->fx8010.etram_pages.bytes / 2) == size)
 		return 0;
-	spin_lock_irq(&emu->emu_lock);
-	outl(HCFG_LOCKTANKCACHE_MASK | inl(emu->port + HCFG), emu->port + HCFG);
-	spin_unlock_irq(&emu->emu_lock);
+	scoped_guard(spinlock_irq, &emu->emu_lock) {
+		outl(HCFG_LOCKTANKCACHE_MASK | inl(emu->port + HCFG), emu->port + HCFG);
+	}
 	snd_emu10k1_ptr_write(emu, TCB, 0, 0);
 	snd_emu10k1_ptr_write(emu, TCBS, 0, TCBS_BUFFSIZE_16K);
 	if (emu->fx8010.etram_pages.area != NULL) {
···
 		memset(emu->fx8010.etram_pages.area, 0, size * 2);
 		snd_emu10k1_ptr_write(emu, TCB, 0, emu->fx8010.etram_pages.addr);
 		snd_emu10k1_ptr_write(emu, TCBS, 0, size_reg);
-		spin_lock_irq(&emu->emu_lock);
-		outl(inl(emu->port + HCFG) & ~HCFG_LOCKTANKCACHE_MASK, emu->port + HCFG);
-		spin_unlock_irq(&emu->emu_lock);
+		scoped_guard(spinlock_irq, &emu->emu_lock) {
+			outl(inl(emu->port + HCFG) & ~HCFG_LOCKTANKCACHE_MASK, emu->port + HCFG);
+		}
 	}
 
 	return 0;

sound/pci/emu10k1/emumixer.c

···
 	const struct snd_emu1010_clock_info *emu_ci =
 		&emu1010_clock_info[emu1010_idx(emu)];
 	unsigned int val;
-	int change = 0;
 
 	val = ucontrol->value.enumerated.item[0] ;
 	if (val >= emu_ci->num)
 		return -EINVAL;
 	guard(snd_emu1010_fpga_lock)(emu);
-	spin_lock_irq(&emu->reg_lock);
-	change = (emu->emu1010.clock_source != val);
-	if (change) {
+	scoped_guard(spinlock_irq, &emu->reg_lock) {
+		if (emu->emu1010.clock_source == val)
+			return 0;
 		emu->emu1010.clock_source = val;
 		emu->emu1010.wclock = emu_ci->vals[val];
 		snd_emu1010_update_clock(emu);
 
 		snd_emu1010_fpga_write(emu, EMU_HANA_UNMUTE, EMU_MUTE);
 		snd_emu1010_fpga_write(emu, EMU_HANA_WCLOCK, emu->emu1010.wclock);
-		spin_unlock_irq(&emu->reg_lock);
-
-		msleep(10);  // Allow DLL to settle
-		snd_emu1010_fpga_write(emu, EMU_HANA_UNMUTE, EMU_UNMUTE);
-	} else {
-		spin_unlock_irq(&emu->reg_lock);
 	}
-	return change;
+
+	msleep(10);  // Allow DLL to settle
+	snd_emu1010_fpga_write(emu, EMU_HANA_UNMUTE, EMU_UNMUTE);
+	return 1;
 }
 
 static const struct snd_kcontrol_new snd_emu1010_clock_source =
···
 	change = (emu->i2c_capture_source != source_id);
 	if (change) {
 		snd_emu10k1_i2c_write(emu, ADC_MUX, 0); /* Mute input */
-		spin_lock_irq(&emu->emu_lock);
-		gpio = inw(emu->port + A_IOCFG);
-		if (source_id==0)
-			outw(gpio | 0x4, emu->port + A_IOCFG);
-		else
-			outw(gpio & ~0x4, emu->port + A_IOCFG);
-		spin_unlock_irq(&emu->emu_lock);
+		scoped_guard(spinlock_irq, &emu->emu_lock) {
+			gpio = inw(emu->port + A_IOCFG);
+			if (source_id == 0)
+				outw(gpio | 0x4, emu->port + A_IOCFG);
+			else
+				outw(gpio & ~0x4, emu->port + A_IOCFG);
+		}
 
 		ngain = emu->i2c_capture_volume[source_id][0]; /* Left */
 		ogain = emu->i2c_capture_volume[emu->i2c_capture_source][0]; /* Left */
···
 	}
 
 	
-	spin_lock_irq(&emu->reg_lock);
+	guard(spinlock_irq)(&emu->reg_lock);
 	reg = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, 0);
 	tmp = reg & ~A_SPDIF_RATE_MASK;
 	tmp |= val;
 	change = (tmp != reg);
 	if (change)
 		snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, 0, tmp);
-	spin_unlock_irq(&emu->reg_lock);
 	return change;
 }
 
···
 	int num_efx = emu->audigy ? 8 : 4;
 	int mask = emu->audigy ? 0x3f : 0x0f;
 
-	spin_lock_irq(&emu->reg_lock);
+	guard(spinlock_irq)(&emu->reg_lock);
 	for (voice = 0; voice < 3; voice++)
 		for (idx = 0; idx < num_efx; idx++) {
 			val = ucontrol->value.integer.value[(voice * num_efx) + idx] & mask;
···
 					    &mix->send_routing[0][0]);
 		}
 	}
-	spin_unlock_irq(&emu->reg_lock);
 	return change;
 }
 
···
 	int change = 0, idx, val;
 	int num_efx = emu->audigy ? 8 : 4;
 
-	spin_lock_irq(&emu->reg_lock);
+	guard(spinlock_irq)(&emu->reg_lock);
 	for (idx = 0; idx < 3*num_efx; idx++) {
 		val = ucontrol->value.integer.value[idx] & 255;
 		if (mix->send_volume[idx/num_efx][idx%num_efx] != val) {
···
 						   &mix->send_volume[0][0]);
 		}
 	}
-	spin_unlock_irq(&emu->reg_lock);
 	return change;
 }
 
···
 		&emu->pcm_mixer[snd_ctl_get_ioffidx(kcontrol, &ucontrol->id)];
 	int change = 0, idx, val;
 
-	spin_lock_irq(&emu->reg_lock);
+	guard(spinlock_irq)(&emu->reg_lock);
 	for (idx = 0; idx < 3; idx++) {
 		unsigned uval = ucontrol->value.integer.value[idx] & 0x1ffff;
 		val = uval * 0x8000U / 0xffffU;
···
 			snd_emu10k1_ptr_write(emu, VTFT_VOLUMETARGET, mix->epcm->voices[0]->number, mix->attn[0]);
 		}
 	}
-	spin_unlock_irq(&emu->reg_lock);
 	return change;
 }
 
···
 	int num_efx = emu->audigy ? 8 : 4;
 	int mask = emu->audigy ? 0x3f : 0x0f;
 
-	spin_lock_irq(&emu->reg_lock);
+	guard(spinlock_irq)(&emu->reg_lock);
 	for (idx = 0; idx < num_efx; idx++) {
 		val = ucontrol->value.integer.value[idx] & mask;
 		if (mix->send_routing[0][idx] != val) {
···
 					&mix->send_routing[0][0]);
 		}
 	}
-	spin_unlock_irq(&emu->reg_lock);
 	return change;
 }
 
···
 	int change = 0, idx, val;
 	int num_efx = emu->audigy ? 8 : 4;
 
-	spin_lock_irq(&emu->reg_lock);
+	guard(spinlock_irq)(&emu->reg_lock);
 	for (idx = 0; idx < num_efx; idx++) {
 		val = ucontrol->value.integer.value[idx] & 255;
 		if (mix->send_volume[0][idx] != val) {
···
 						   &mix->send_volume[0][0]);
 		}
 	}
-	spin_unlock_irq(&emu->reg_lock);
 	return change;
 }
 
···
 	int change = 0, val;
 	unsigned uval;
 
-	spin_lock_irq(&emu->reg_lock);
+	guard(spinlock_irq)(&emu->reg_lock);
 	uval = ucontrol->value.integer.value[0] & 0x1ffff;
 	val = uval * 0x8000U / 0xffffU;
 	if (mix->attn[0] != val) {
···
 			snd_emu10k1_ptr_write(emu, VTFT_VOLUMETARGET, mix->epcm->voices[ch]->number, mix->attn[0]);
 		}
 	}
-	spin_unlock_irq(&emu->reg_lock);
 	return change;
 }
 
···
 	sw = ucontrol->value.integer.value[0];
 	if (emu->card_capabilities->invert_shared_spdif)
 		sw = !sw;
-	spin_lock_irq(&emu->emu_lock);
+	guard(spinlock_irq)(&emu->emu_lock);
 	if ( emu->card_capabilities->i2c_adc) {
 		/* Do nothing for Audigy 2 ZS Notebook */
 	} else if (emu->audigy) {
···
 		reg |= val;
 		outl(reg | val, emu->port + HCFG);
 	}
-	spin_unlock_irq(&emu->emu_lock);
 	return change;
 }
 

sound/pci/emu10k1/emumpu401.c

···
 		return;
 	}
 
-	spin_lock(&midi->input_lock);
-	if ((status & midi->ipr_rx) && mpu401_input_avail(emu, midi)) {
-		if (!(midi->midi_mode & EMU10K1_MIDI_MODE_INPUT)) {
-			mpu401_clear_rx(emu, midi);
-		} else {
-			byte = mpu401_read_data(emu, midi);
-			if (midi->substream_input)
-				snd_rawmidi_receive(midi->substream_input, &byte, 1);
+	scoped_guard(spinlock, &midi->input_lock) {
+		if ((status & midi->ipr_rx) && mpu401_input_avail(emu, midi)) {
+			if (!(midi->midi_mode & EMU10K1_MIDI_MODE_INPUT)) {
+				mpu401_clear_rx(emu, midi);
+			} else {
+				byte = mpu401_read_data(emu, midi);
+				if (midi->substream_input)
+					snd_rawmidi_receive(midi->substream_input, &byte, 1);
+			}
 		}
 	}
-	spin_unlock(&midi->input_lock);
 
-	spin_lock(&midi->output_lock);
-	if ((status & midi->ipr_tx) && mpu401_output_ready(emu, midi)) {
-		if (midi->substream_output &&
-		    snd_rawmidi_transmit(midi->substream_output, &byte, 1) == 1) {
-			mpu401_write_data(emu, midi, byte);
-		} else {
-			snd_emu10k1_intr_disable(emu, midi->tx_enable);
+	scoped_guard(spinlock, &midi->output_lock) {
+		if ((status & midi->ipr_tx) && mpu401_output_ready(emu, midi)) {
+			if (midi->substream_output &&
+			    snd_rawmidi_transmit(midi->substream_output, &byte, 1) == 1) {
+				mpu401_write_data(emu, midi, byte);
+			} else {
+				snd_emu10k1_intr_disable(emu, midi->tx_enable);
+			}
 		}
 	}
-	spin_unlock(&midi->output_lock);
 }
 
 static void snd_emu10k1_midi_interrupt(struct snd_emu10k1 *emu, unsigned int status)
···
 {
 	int timeout, ok;
 
-	spin_lock_irq(&midi->input_lock);
-	mpu401_write_data(emu, midi, 0x00);
-	/* mpu401_clear_rx(emu, midi); */
+	scoped_guard(spinlock_irq, &midi->input_lock) {
+		mpu401_write_data(emu, midi, 0x00);
+		/* mpu401_clear_rx(emu, midi); */
 
-	mpu401_write_cmd(emu, midi, cmd);
-	if (ack) {
-		ok = 0;
-		timeout = 10000;
-		while (!ok && timeout-- > 0) {
-			if (mpu401_input_avail(emu, midi)) {
-				if (mpu401_read_data(emu, midi) == MPU401_ACK)
-					ok = 1;
+		mpu401_write_cmd(emu, midi, cmd);
+		if (ack) {
+			ok = 0;
+			timeout = 10000;
+			while (!ok && timeout-- > 0) {
+				if (mpu401_input_avail(emu, midi)) {
+					if (mpu401_read_data(emu, midi) == MPU401_ACK)
+						ok = 1;
+				}
 			}
-		}
-		if (!ok && mpu401_read_data(emu, midi) == MPU401_ACK)
+			if (!ok && mpu401_read_data(emu, midi) == MPU401_ACK)
+				ok = 1;
+		} else {
 			ok = 1;
-	} else {
-		ok = 1;
+		}
 	}
-	spin_unlock_irq(&midi->input_lock);
 	if (!ok) {
 		dev_err(emu->card->dev,
 			"midi_cmd: 0x%x failed at 0x%lx (status = 0x%x, data = 0x%x)!!!\n",
···
 	emu = midi->emu;
 	if (snd_BUG_ON(!emu))
 		return -ENXIO;
-	spin_lock_irq(&midi->open_lock);
-	midi->midi_mode |= EMU10K1_MIDI_MODE_INPUT;
-	midi->substream_input = substream;
-	if (!(midi->midi_mode & EMU10K1_MIDI_MODE_OUTPUT)) {
-		spin_unlock_irq(&midi->open_lock);
-		if (snd_emu10k1_midi_cmd(emu, midi, MPU401_RESET, 1))
-			goto error_out;
-		if (snd_emu10k1_midi_cmd(emu, midi, MPU401_ENTER_UART, 1))
-			goto error_out;
-	} else {
-		spin_unlock_irq(&midi->open_lock);
+	scoped_guard(spinlock_irq, &midi->open_lock) {
+		midi->midi_mode |= EMU10K1_MIDI_MODE_INPUT;
+		midi->substream_input = substream;
+		if (midi->midi_mode & EMU10K1_MIDI_MODE_OUTPUT)
+			return 0;
 	}
+	if (snd_emu10k1_midi_cmd(emu, midi, MPU401_RESET, 1))
+		return -EIO;
+	if (snd_emu10k1_midi_cmd(emu, midi, MPU401_ENTER_UART, 1))
+		return -EIO;
 	return 0;
-
-error_out:
-	return -EIO;
 }
 
 static int snd_emu10k1_midi_output_open(struct snd_rawmidi_substream *substream)
···
 	emu = midi->emu;
 	if (snd_BUG_ON(!emu))
 		return -ENXIO;
-	spin_lock_irq(&midi->open_lock);
-	midi->midi_mode |= EMU10K1_MIDI_MODE_OUTPUT;
-	midi->substream_output = substream;
-	if (!(midi->midi_mode & EMU10K1_MIDI_MODE_INPUT)) {
-		spin_unlock_irq(&midi->open_lock);
-		if (snd_emu10k1_midi_cmd(emu, midi, MPU401_RESET, 1))
-			goto error_out;
-		if (snd_emu10k1_midi_cmd(emu, midi, MPU401_ENTER_UART, 1))
-			goto error_out;
-	} else {
-		spin_unlock_irq(&midi->open_lock);
+	scoped_guard(spinlock_irq, &midi->open_lock) {
+		midi->midi_mode |= EMU10K1_MIDI_MODE_OUTPUT;
+		midi->substream_output = substream;
+		if (midi->midi_mode & EMU10K1_MIDI_MODE_INPUT)
+			return 0;
 	}
+	if (snd_emu10k1_midi_cmd(emu, midi, MPU401_RESET, 1))
+		return -EIO;
+	if (snd_emu10k1_midi_cmd(emu, midi, MPU401_ENTER_UART, 1))
+		return -EIO;
 	return 0;
-
-error_out:
-	return -EIO;
 }
 
 static int snd_emu10k1_midi_input_close(struct snd_rawmidi_substream *substream)
 {
 	struct snd_emu10k1 *emu;
 	struct snd_emu10k1_midi *midi = (struct snd_emu10k1_midi *)substream->rmidi->private_data;
-	int err = 0;
 
 	emu = midi->emu;
 	if (snd_BUG_ON(!emu))
 		return -ENXIO;
-	spin_lock_irq(&midi->open_lock);
-	snd_emu10k1_intr_disable(emu, midi->rx_enable);
-	midi->midi_mode &= ~EMU10K1_MIDI_MODE_INPUT;
-	midi->substream_input = NULL;
-	if (!(midi->midi_mode & EMU10K1_MIDI_MODE_OUTPUT)) {
-		spin_unlock_irq(&midi->open_lock);
-		err = snd_emu10k1_midi_cmd(emu, midi, MPU401_RESET, 0);
-	} else {
-		spin_unlock_irq(&midi->open_lock);
+	scoped_guard(spinlock_irq, &midi->open_lock) {
+		snd_emu10k1_intr_disable(emu, midi->rx_enable);
+		midi->midi_mode &= ~EMU10K1_MIDI_MODE_INPUT;
+		midi->substream_input = NULL;
+		if (midi->midi_mode & EMU10K1_MIDI_MODE_OUTPUT)
+			return 0;
 	}
-	return err;
+	return snd_emu10k1_midi_cmd(emu, midi, MPU401_RESET, 0);
 }
 
 static int snd_emu10k1_midi_output_close(struct snd_rawmidi_substream *substream)
 {
 	struct snd_emu10k1 *emu;
 	struct snd_emu10k1_midi *midi = (struct snd_emu10k1_midi *)substream->rmidi->private_data;
-	int err = 0;
 
 	emu = midi->emu;
 	if (snd_BUG_ON(!emu))
 		return -ENXIO;
-	spin_lock_irq(&midi->open_lock);
-	snd_emu10k1_intr_disable(emu, midi->tx_enable);
-	midi->midi_mode &= ~EMU10K1_MIDI_MODE_OUTPUT;
-	midi->substream_output = NULL;
-	if (!(midi->midi_mode & EMU10K1_MIDI_MODE_INPUT)) {
-		spin_unlock_irq(&midi->open_lock);
-		err = snd_emu10k1_midi_cmd(emu, midi, MPU401_RESET, 0);
-	} else {
-		spin_unlock_irq(&midi->open_lock);
+	scoped_guard(spinlock_irq, &midi->open_lock) {
+		snd_emu10k1_intr_disable(emu, midi->tx_enable);
+		midi->midi_mode &= ~EMU10K1_MIDI_MODE_OUTPUT;
+		midi->substream_output = NULL;
+		if (midi->midi_mode & EMU10K1_MIDI_MODE_INPUT)
+			return 0;
 	}
-	return err;
+	return snd_emu10k1_midi_cmd(emu, midi, MPU401_RESET, 0);
 }
 
 static void snd_emu10k1_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
···
 		unsigned char byte;
 	
 		/* try to send some amount of bytes here before interrupts */
-		spin_lock_irq(&midi->output_lock);
-		while (max > 0) {
-			if (mpu401_output_ready(emu, midi)) {
-				if (!(midi->midi_mode & EMU10K1_MIDI_MODE_OUTPUT) ||
-				    snd_rawmidi_transmit(substream, &byte, 1) != 1) {
-					/* no more data */
-					spin_unlock_irq(&midi->output_lock);
-					return;
+		scoped_guard(spinlock_irq, &midi->output_lock) {
+			while (max > 0) {
+				if (mpu401_output_ready(emu, midi)) {
+					if (!(midi->midi_mode & EMU10K1_MIDI_MODE_OUTPUT) ||
+					    snd_rawmidi_transmit(substream, &byte, 1) != 1) {
+						/* no more data */
+						return;
+					}
+					mpu401_write_data(emu, midi, byte);
+					max--;
+				} else {
+					break;
 				}
-				mpu401_write_data(emu, midi, byte);
-				max--;
-			} else {
-				break;
 			}
 		}
-		spin_unlock_irq(&midi->output_lock);
 		snd_emu10k1_intr_enable(emu, midi->tx_enable);
 	} else {
 		snd_emu10k1_intr_disable(emu, midi->tx_enable);

sound/pci/emu10k1/emupcm.c

···
 					unsigned int end_addr,
 					struct snd_emu10k1_pcm_mixer *mix)
 {
-	spin_lock_irq(&emu->reg_lock);
+	guard(spinlock_irq)(&emu->reg_lock);
 	snd_emu10k1_pcm_init_voice(emu, evoice, w_16, stereo,
 				   start_addr, end_addr,
 				   &mix->send_routing[stereo][0],
···
 					   start_addr, end_addr,
 					   &mix->send_routing[2][0],
 					   &mix->send_volume[2][0]);
-	spin_unlock_irq(&emu->reg_lock);
 }
 
 static void snd_emu10k1_pcm_init_extra_voice(struct snd_emu10k1 *emu,
···
 	struct snd_emu10k1_pcm_mixer *mix;
 	bool w_16 = snd_pcm_format_width(runtime->format) == 16;
 	bool stereo = runtime->channels == 2;
-	int result = 0;
 
 	/*
 	dev_dbg(emu->card->dev,
 		"trigger - emu10k1 = 0x%x, cmd = %i, pointer = %i\n",
 	       (int)emu, cmd, substream->ops->pointer(substream))
 	*/
-	spin_lock(&emu->reg_lock);
+	guard(spinlock)(&emu->reg_lock);
 	switch (cmd) {
 	case SNDRV_PCM_TRIGGER_START:
 		snd_emu10k1_playback_prepare_voices(emu, epcm, w_16, stereo, 1);
···
 		snd_emu10k1_playback_mute_voices(emu, epcm->voices[0], stereo);
 		break;
 	default:
-		result = -EINVAL;
-		break;
+		return -EINVAL;
 	}
-	spin_unlock(&emu->reg_lock);
-	return result;
+	return 0;
 }
 
 static int snd_emu10k1_capture_trigger(struct snd_pcm_substream *substream,
···
 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct snd_emu10k1_pcm *epcm = runtime->private_data;
-	int result = 0;
 
-	spin_lock(&emu->reg_lock);
+	guard(spinlock)(&emu->reg_lock);
 	switch (cmd) {
 	case SNDRV_PCM_TRIGGER_START:
 	case SNDRV_PCM_TRIGGER_RESUME:
···
 		}
 		break;
 	default:
-		result = -EINVAL;
+		return -EINVAL;
 	}
-	spin_unlock(&emu->reg_lock);
-	return result;
+	return 0;
 }
 
 static snd_pcm_uframes_t snd_emu10k1_playback_pointer(struct snd_pcm_substream *substream)
···
 	u64 mask;
 	int result = 0;
 
-	spin_lock(&emu->reg_lock);
+	guard(spinlock)(&emu->reg_lock);
 	switch (cmd) {
 	case SNDRV_PCM_TRIGGER_START:
 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
···
 			if (result == 0) {
 				// The extra voice is allowed to lag a bit
 				snd_emu10k1_playback_trigger_voice(emu, epcm->extra);
-				goto leave;
+				return 0;
 			}
 
 			snd_emu10k1_efx_playback_stop_voices(
···
 		epcm->resume_pos = snd_emu10k1_playback_pointer(substream);
 		break;
 	default:
-		result = -EINVAL;
-		break;
+		return -EINVAL;
 	}
-leave:
-	spin_unlock(&emu->reg_lock);
 	return result;
 }
 
···
 #endif
 		runtime->hw.formats = SNDRV_PCM_FMTBIT_S32_LE;
 	} else {
-		spin_lock_irq(&emu->reg_lock);
+		guard(spinlock_irq)(&emu->reg_lock);
 		runtime->hw.channels_min = runtime->hw.channels_max = 0;
 		for (idx = 0; idx < nefx; idx++) {
 			if (emu->efx_voices_mask[idx/32] & (1 << (idx%32))) {
···
 		}
 		epcm->capture_cr_val = emu->efx_voices_mask[0];
 		epcm->capture_cr_val2 = emu->efx_voices_mask[1];
-		spin_unlock_irq(&emu->reg_lock);
 	}
 	err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
 					 &hw_constraints_efx_capture_channels);
···
 	if (bits == 9 || bits == 11 || bits == 13 || bits == 15 || bits > 16)
 		return -EINVAL;
 
-	spin_lock_irq(&emu->reg_lock);
+	guard(spinlock_irq)(&emu->reg_lock);
 	change = (nval[0] != emu->efx_voices_mask[0]) ||
 		(nval[1] != emu->efx_voices_mask[1]);
 	emu->efx_voices_mask[0] = nval[0];
 	emu->efx_voices_mask[1] = nval[1];
-	spin_unlock_irq(&emu->reg_lock);
 	return change;
 }
 
···
 {
 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 	struct snd_emu10k1_fx8010_pcm *pcm = &emu->fx8010.pcm[substream->number];
-	int result = 0;
+	int result;
 
-	spin_lock(&emu->reg_lock);
+	guard(spinlock)(&emu->reg_lock);
 	switch (cmd) {
 	case SNDRV_PCM_TRIGGER_START:
 		/* follow thru */
···
 #endif
 		result = snd_emu10k1_fx8010_register_irq_handler(emu, snd_emu10k1_fx8010_playback_irq, pcm->gpr_running, substream, &pcm->irq);
 		if (result < 0)
-			goto __err;
+			return result;
 		snd_emu10k1_fx8010_playback_transfer(substream);	/* roll the ball */
 		snd_emu10k1_ptr_write(emu, emu->gpr_base + pcm->gpr_trigger, 0, 1);
 		break;
···
 		pcm->tram_shift = 0;
 		break;
 	default:
-		result = -EINVAL;
-		break;
+		return -EINVAL;
 	}
-      __err:
-	spin_unlock(&emu->reg_lock);
-	return result;
+	return 0;
 }
 
 static snd_pcm_uframes_t snd_emu10k1_fx8010_playback_pointer(struct snd_pcm_substream *substream)
···
 	runtime->hw = snd_emu10k1_fx8010_playback;
 	runtime->hw.channels_min = runtime->hw.channels_max = pcm->channels;
 	runtime->hw.period_bytes_max = (pcm->buffer_size * 2) / 2;
-	spin_lock_irq(&emu->reg_lock);
-	if (pcm->valid == 0) {
-		spin_unlock_irq(&emu->reg_lock);
+	guard(spinlock_irq)(&emu->reg_lock);
+	if (pcm->valid == 0)
 		return -ENODEV;
-	}
 	pcm->opened = 1;
-	spin_unlock_irq(&emu->reg_lock);
 	return 0;
 }
 
···
 	struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 	struct snd_emu10k1_fx8010_pcm *pcm = &emu->fx8010.pcm[substream->number];
 
-	spin_lock_irq(&emu->reg_lock);
+	guard(spinlock_irq)(&emu->reg_lock);
 	pcm->opened = 0;
-	spin_unlock_irq(&emu->reg_lock);
 	return 0;
 }
 

sound/pci/emu10k1/emuproc.c

···
 				 unsigned int reg,
 				 unsigned int chn)
 {
-	unsigned int regptr, val;
+	unsigned int regptr;
 
 	regptr = (reg << 16) | chn;
 
-	spin_lock_irq(&emu->emu_lock);
+	guard(spinlock_irq)(&emu->emu_lock);
 	outl(regptr, emu->port + iobase + PTR);
-	val = inl(emu->port + iobase + DATA);
-	spin_unlock_irq(&emu->emu_lock);
-	return val;
+	return inl(emu->port + iobase + DATA);
 }
 
 static void snd_ptr_write(struct snd_emu10k1 *emu,
···
 
 	regptr = (reg << 16) | chn;
 
-	spin_lock_irq(&emu->emu_lock);
+	guard(spinlock_irq)(&emu->emu_lock);
 	outl(regptr, emu->port + iobase + PTR);
 	outl(data, emu->port + iobase + DATA);
-	spin_unlock_irq(&emu->emu_lock);
 }
 
 

sound/pci/emu10k1/io.c

···
 
 unsigned int snd_emu10k1_ptr_read(struct snd_emu10k1 * emu, unsigned int reg, unsigned int chn)
 {
-	unsigned long flags;
 	unsigned int regptr, val;
 	unsigned int mask;
 
···
 	if (!check_ptr_reg(emu, regptr))
 		return 0;
 
-	spin_lock_irqsave(&emu->emu_lock, flags);
-	outl(regptr, emu->port + PTR);
-	val = inl(emu->port + DATA);
-	spin_unlock_irqrestore(&emu->emu_lock, flags);
+	scoped_guard(spinlock_irqsave, &emu->emu_lock) {
+		outl(regptr, emu->port + PTR);
+		val = inl(emu->port + DATA);
+	}
 
 	if (reg & 0xff000000) {
 		unsigned char size, offset;
···
 void snd_emu10k1_ptr_write(struct snd_emu10k1 *emu, unsigned int reg, unsigned int chn, unsigned int data)
 {
 	unsigned int regptr;
-	unsigned long flags;
 	unsigned int mask;
 
 	regptr = (reg << 16) | chn;
 	if (!check_ptr_reg(emu, regptr))
 		return;
 
+	guard(spinlock_irqsave)(&emu->emu_lock);
 	if (reg & 0xff000000) {
 		unsigned char size, offset;
 
···
 		mask <<= offset;
 		data <<= offset;
 
-		spin_lock_irqsave(&emu->emu_lock, flags);
 		outl(regptr, emu->port + PTR);
 		data |= inl(emu->port + DATA) & ~mask;
 	} else {
-		spin_lock_irqsave(&emu->emu_lock, flags);
 		outl(regptr, emu->port + PTR);
 	}
 	outl(data, emu->port + DATA);
-	spin_unlock_irqrestore(&emu->emu_lock, flags);
 }
 
 EXPORT_SYMBOL(snd_emu10k1_ptr_write);
···
 {
 	va_list va;
 	u32 addr_mask;
-	unsigned long flags;
 
 	if (snd_BUG_ON(!emu))
 		return;
···
 	addr_mask = ~((emu->audigy ? A_PTR_ADDRESS_MASK : PTR_ADDRESS_MASK) >> 16);
 
 	va_start(va, chn);
-	spin_lock_irqsave(&emu->emu_lock, flags);
+	guard(spinlock_irqsave)(&emu->emu_lock);
 	for (;;) {
 		u32 data;
 		u32 reg = va_arg(va, u32);
···
 		outl((reg << 16) | chn, emu->port + PTR);
 		outl(data, emu->port + DATA);
 	}
-	spin_unlock_irqrestore(&emu->emu_lock, flags);
 	va_end(va);
 }
 
···
 					  unsigned int reg, 
 					  unsigned int chn)
 {
-	unsigned long flags;
-	unsigned int regptr, val;
+	unsigned int regptr;
   
 	regptr = (reg << 16) | chn;
 
-	spin_lock_irqsave(&emu->emu_lock, flags);
+	guard(spinlock_irqsave)(&emu->emu_lock);
 	outl(regptr, emu->port + PTR2);
-	val = inl(emu->port + DATA2);
-	spin_unlock_irqrestore(&emu->emu_lock, flags);
-	return val;
+	return inl(emu->port + DATA2);
 }
 
 void snd_emu10k1_ptr20_write(struct snd_emu10k1 *emu, 
···
 				   unsigned int data)
 {
 	unsigned int regptr;
-	unsigned long flags;
 
 	regptr = (reg << 16) | chn;
 
-	spin_lock_irqsave(&emu->emu_lock, flags);
+	guard(spinlock_irqsave)(&emu->emu_lock);
 	outl(regptr, emu->port + PTR2);
 	outl(data, emu->port + DATA2);
-	spin_unlock_irqrestore(&emu->emu_lock, flags);
 }
 
 int snd_emu10k1_spi_write(struct snd_emu10k1 * emu,
···
 	unsigned int reset, set;
 	unsigned int reg, tmp;
 	int n, result;
-	int err = 0;
 
 	/* This function is not re-entrant, so protect against it. */
-	spin_lock(&emu->spi_lock);
+	guard(spinlock)(&emu->spi_lock);
 	if (emu->card_capabilities->ca0108_chip)
 		reg = P17V_SPI;
 	else {
 		/* For other chip types the SPI register
 		 * is currently unknown. */
-		err = 1;
-		goto spi_write_exit;
+		return 1;
 	}
 	if (data > 0xffff) {
 		/* Only 16bit values allowed */
-		err = 1;
-		goto spi_write_exit;
+		return 1;
 	}
 
 	tmp = snd_emu10k1_ptr20_read(emu, reg, 0);
···
 	}
 	if (result) {
 		/* Timed out */
-		err = 1;
-		goto spi_write_exit;
+		return 1;
 	}
 	snd_emu10k1_ptr20_write(emu, reg, 0, reset | data);
 	tmp = snd_emu10k1_ptr20_read(emu, reg, 0); /* Write post */
-	err = 0;
-spi_write_exit:
-	spin_unlock(&emu->spi_lock);
-	return err;
+	return 0;
 }
 
 /* The ADC does not support i2c read, so only write is implemented */
···
 	int timeout = 0;
 	int status;
 	int retry;
-	int err = 0;
 
 	if ((reg > 0x7f) || (value > 0x1ff)) {
 		dev_err(emu->card->dev, "i2c_write: invalid values.\n");
···
 	}
 
 	/* This function is not re-entrant, so protect against it. */
-	spin_lock(&emu->i2c_lock);
+	guard(spinlock)(&emu->i2c_lock);
 
 	tmp = reg << 25 | value << 16;
 
···
 		dev_err(emu->card->dev, "status=0x%x, reg=%d, value=%d\n",
 			status, reg, value);
 		/* dump_stack(); */
-		err = -EINVAL;
+		return -EINVAL;
 	}
     
-	spin_unlock(&emu->i2c_lock);
-	return err;
+	return 0;
 }
 
 static void snd_emu1010_fpga_write_locked(struct snd_emu10k1 *emu, u32 reg, u32 value)
···
 
 void snd_emu10k1_intr_enable(struct snd_emu10k1 *emu, unsigned int intrenb)
 {
-	unsigned long flags;
 	unsigned int enable;
 
-	spin_lock_irqsave(&emu->emu_lock, flags);
+	guard(spinlock_irqsave)(&emu->emu_lock);
 	enable = inl(emu->port + INTE) | intrenb;
 	outl(enable, emu->port + INTE);
-	spin_unlock_irqrestore(&emu->emu_lock, flags);
 }
 
 void snd_emu10k1_intr_disable(struct snd_emu10k1 *emu, unsigned int intrenb)
 {
-	unsigned long flags;
 	unsigned int enable;
 
-	spin_lock_irqsave(&emu->emu_lock, flags);
+	guard(spinlock_irqsave)(&emu->emu_lock);
 	enable = inl(emu->port + INTE) & ~intrenb;
 	outl(enable, emu->port + INTE);
-	spin_unlock_irqrestore(&emu->emu_lock, flags);
 }
 
 void snd_emu10k1_voice_intr_enable(struct snd_emu10k1 *emu, unsigned int voicenum)
 {
-	unsigned long flags;
 	unsigned int val;
 
-	spin_lock_irqsave(&emu->emu_lock, flags);
+	guard(spinlock_irqsave)(&emu->emu_lock);
 	if (voicenum >= 32) {
 		outl(CLIEH << 16, emu->port + PTR);
 		val = inl(emu->port + DATA);
···
 		val |= 1 << voicenum;
 	}
 	outl(val, emu->port + DATA);
-	spin_unlock_irqrestore(&emu->emu_lock, flags);
 }
 
 void snd_emu10k1_voice_intr_disable(struct snd_emu10k1 *emu, unsigned int voicenum)
 {
-	unsigned long flags;
 	unsigned int val;
 
-	spin_lock_irqsave(&emu->emu_lock, flags);
+	guard(spinlock_irqsave)(&emu->emu_lock);
 	if (voicenum >= 32) {
 		outl(CLIEH << 16, emu->port + PTR);
 		val = inl(emu->port + DATA);
···
 		val &= ~(1 << voicenum);
 	}
 	outl(val, emu->port + DATA);
-	spin_unlock_irqrestore(&emu->emu_lock, flags);
 }
 
 void snd_emu10k1_voice_intr_ack(struct snd_emu10k1 *emu, unsigned int voicenum)
 {
-	unsigned long flags;
-
-	spin_lock_irqsave(&emu->emu_lock, flags);
+	guard(spinlock_irqsave)(&emu->emu_lock);
 	if (voicenum >= 32) {
 		outl(CLIPH << 16, emu->port + PTR);
 		voicenum = 1 << (voicenum - 32);
···
 		voicenum = 1 << voicenum;
 	}
 	outl(voicenum, emu->port + DATA);
-	spin_unlock_irqrestore(&emu->emu_lock, flags);
 }
 
 void snd_emu10k1_voice_half_loop_intr_enable(struct snd_emu10k1 *emu, unsigned int voicenum)
 {
-	unsigned long flags;
 	unsigned int val;
 
-	spin_lock_irqsave(&emu->emu_lock, flags);
+	guard(spinlock_irqsave)(&emu->emu_lock);
 	if (voicenum >= 32) {
 		outl(HLIEH << 16, emu->port + PTR);
 		val = inl(emu->port + DATA);
···
 		val |= 1 << voicenum;
 	}
 	outl(val, emu->port + DATA);
-	spin_unlock_irqrestore(&emu->emu_lock, flags);
 }
 
 void snd_emu10k1_voice_half_loop_intr_disable(struct snd_emu10k1 *emu, unsigned int voicenum)
 {
-	unsigned long flags;
 	unsigned int val;
 
-	spin_lock_irqsave(&emu->emu_lock, flags);
+	guard(spinlock_irqsave)(&emu->emu_lock);
 	if (voicenum >= 32) {
 		outl(HLIEH << 16, emu->port + PTR);
 		val = inl(emu->port + DATA);
···
 		val &= ~(1 << voicenum);
 	}
 	outl(val, emu->port + DATA);
-	spin_unlock_irqrestore(&emu->emu_lock, flags);
 }
 
 void snd_emu10k1_voice_half_loop_intr_ack(struct snd_emu10k1 *emu, unsigned int voicenum)
 {
-	unsigned long flags;
-
-	spin_lock_irqsave(&emu->emu_lock, flags);
+	guard(spinlock_irqsave)(&emu->emu_lock);
 	if (voicenum >= 32) {
 		outl(HLIPH << 16, emu->port + PTR);
 		voicenum = 1 << (voicenum - 32);
···
 		voicenum = 1 << voicenum;
 	}
 	outl(voicenum, emu->port + DATA);
-	spin_unlock_irqrestore(&emu->emu_lock, flags);
 }
 
 #if 0
 void snd_emu10k1_voice_set_loop_stop(struct snd_emu10k1 *emu, unsigned int voicenum)
 {
-	unsigned long flags;
 	unsigned int sol;
 
-	spin_lock_irqsave(&emu->emu_lock, flags);
+	guard(spinlock_irqsave)(&emu->emu_lock);
 	if (voicenum >= 32) {
 		outl(SOLEH << 16, emu->port + PTR);
 		sol = inl(emu->port + DATA);
···
 		sol |= 1 << voicenum;
 	}
 	outl(sol, emu->port + DATA);
-	spin_unlock_irqrestore(&emu->emu_lock, flags);
 }
 
 void snd_emu10k1_voice_clear_loop_stop(struct snd_emu10k1 *emu, unsigned int voicenum)
 {
-	unsigned long flags;
 	unsigned int sol;
 
-	spin_lock_irqsave(&emu->emu_lock, flags);
+	guard(spinlock_irqsave)(&emu->emu_lock);
 	if (voicenum >= 32) {
 		outl(SOLEH << 16, emu->port + PTR);
 		sol = inl(emu->port + DATA);
···
 		sol &= ~(1 << voicenum);
 	}
 	outl(sol, emu->port + DATA);
-	spin_unlock_irqrestore(&emu->emu_lock, flags);
 }
 #endif
 
 void snd_emu10k1_voice_set_loop_stop_multiple(struct snd_emu10k1 *emu, u64 voices)
 {
-	unsigned long flags;
-
-	spin_lock_irqsave(&emu->emu_lock, flags);
+	guard(spinlock_irqsave)(&emu->emu_lock);
 	outl(SOLEL << 16, emu->port + PTR);
 	outl(inl(emu->port + DATA) | (u32)voices, emu->port + DATA);
 	outl(SOLEH << 16, emu->port + PTR);
 	outl(inl(emu->port + DATA) | (u32)(voices >> 32), emu->port + DATA);
-	spin_unlock_irqrestore(&emu->emu_lock, flags);
 }
 
 void snd_emu10k1_voice_clear_loop_stop_multiple(struct snd_emu10k1 *emu, u64 voices)
 {
-	unsigned long flags;
-
-	spin_lock_irqsave(&emu->emu_lock, flags);
+	guard(spinlock_irqsave)(&emu->emu_lock);
 	outl(SOLEL << 16, emu->port + PTR);
 	outl(inl(emu->port + DATA) & (u32)~voices, emu->port + DATA);
 	outl(SOLEH << 16, emu->port + PTR);
 	outl(inl(emu->port + DATA) & (u32)(~voices >> 32), emu->port + DATA);
-	spin_unlock_irqrestore(&emu->emu_lock, flags);
 }
 
 int snd_emu10k1_voice_clear_loop_stop_multiple_atomic(struct snd_emu10k1 *emu, u64 voices)
···
 unsigned short snd_emu10k1_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
 {
 	struct snd_emu10k1 *emu = ac97->private_data;
-	unsigned long flags;
-	unsigned short val;
 
-	spin_lock_irqsave(&emu->emu_lock, flags);
+	guard(spinlock_irqsave)(&emu->emu_lock);
 	outb(reg, emu->port + AC97ADDRESS);
-	val = inw(emu->port + AC97DATA);
-	spin_unlock_irqrestore(&emu->emu_lock, flags);
-	return val;
+	return inw(emu->port + AC97DATA);
 }
 
 void snd_emu10k1_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short data)
 {
 	struct snd_emu10k1 *emu = ac97->private_data;
-	unsigned long flags;
 
-	spin_lock_irqsave(&emu->emu_lock, flags);
+	guard(spinlock_irqsave)(&emu->emu_lock);
 	outb(reg, emu->port + AC97ADDRESS);
 	outw(data, emu->port + AC97DATA);
-	spin_unlock_irqrestore(&emu->emu_lock, flags);
 }

sound/pci/emu10k1/memory.c

···
 	int size;
 	struct list_head *p, *nextp;
 	struct snd_emu10k1_memblk *deleted;
-	unsigned long flags;
 
-	spin_lock_irqsave(&emu->memblk_lock, flags);
+	guard(spinlock_irqsave)(&emu->memblk_lock);
 	if (blk->mapped_page >= 0) {
 		/* update order link */
 		list_move_tail(&blk->mapped_order_link,
 			       &emu->mapped_order_link_head);
-		spin_unlock_irqrestore(&emu->memblk_lock, flags);
 		return 0;
 	}
 	err = map_memblk(emu, blk);
···
 			}
 		}
 	}
-	spin_unlock_irqrestore(&emu->memblk_lock, flags);
 	return err;
 }
 
···
 {
 	struct snd_util_memhdr *hdr = emu->memhdr; 
 	struct snd_emu10k1_memblk *blk = (struct snd_emu10k1_memblk *)memblk;
-	unsigned long flags;
 
 	guard(mutex)(&hdr->block_mutex);
-	spin_lock_irqsave(&emu->memblk_lock, flags);
-	if (blk->mapped_page >= 0)
-		unmap_memblk(emu, blk);
-	spin_unlock_irqrestore(&emu->memblk_lock, flags);
+	scoped_guard(spinlock_irqsave, &emu->memblk_lock) {
+		if (blk->mapped_page >= 0)
+			unmap_memblk(emu, blk);
+	}
 	synth_free_pages(emu, blk);
 	__snd_util_mem_free(hdr, memblk);
 	return 0;

sound/pci/emu10k1/p16v.c

···
 
 static void snd_p16v_intr_enable(struct snd_emu10k1 *emu, unsigned int intrenb)
 {
-	unsigned long flags;
 	unsigned int enable;
 
-	spin_lock_irqsave(&emu->emu_lock, flags);
+	guard(spinlock_irqsave)(&emu->emu_lock);
 	enable = inl(emu->port + INTE2) | intrenb;
 	outl(enable, emu->port + INTE2);
-	spin_unlock_irqrestore(&emu->emu_lock, flags);
 }
 
 static void snd_p16v_intr_disable(struct snd_emu10k1 *emu, unsigned int intrenb)
 {
-	unsigned long flags;
 	unsigned int disable;
 
-	spin_lock_irqsave(&emu->emu_lock, flags);
+	guard(spinlock_irqsave)(&emu->emu_lock);
 	disable = inl(emu->port + INTE2) & (~intrenb);
 	outl(disable, emu->port + INTE2);
-	spin_unlock_irqrestore(&emu->emu_lock, flags);
 }
 
 static void snd_p16v_interrupt(struct snd_emu10k1 *emu)

sound/pci/emu10k1/voice.c

···
 int snd_emu10k1_voice_alloc(struct snd_emu10k1 *emu, int type, int count, int channels,
 			    struct snd_emu10k1_pcm *epcm, struct snd_emu10k1_voice **rvoice)
 {
-	unsigned long flags;
 	int result;
 
 	if (snd_BUG_ON(!rvoice))
···
 	if (snd_BUG_ON(!channels))
 		return -EINVAL;
 
-	spin_lock_irqsave(&emu->voice_lock, flags);
+	guard(spinlock_irqsave)(&emu->voice_lock);
 	for (int got = 0; got < channels; ) {
 		result = voice_alloc(emu, type, count, epcm, &rvoice[got]);
 		if (result == 0) {
···
 		}
 		break;
 	}
-	spin_unlock_irqrestore(&emu->voice_lock, flags);
 
 	return result;
 }
···
 int snd_emu10k1_voice_free(struct snd_emu10k1 *emu,
 			   struct snd_emu10k1_voice *pvoice)
 {
-	unsigned long flags;
 	int last;
 
 	if (snd_BUG_ON(!pvoice))
 		return -EINVAL;
-	spin_lock_irqsave(&emu->voice_lock, flags);
+	guard(spinlock_irqsave)(&emu->voice_lock);
 	do {
 		last = pvoice->last;
 		voice_free(emu, pvoice++);
 	} while (!last);
-	spin_unlock_irqrestore(&emu->voice_lock, flags);
 	return 0;
 }