1 files changed, 59 insertions, 90 deletions

diff --git a/sound/pci/echoaudio/echoaudio.c b/sound/pci/echoaudio/echoaudio.c
index 7484de255a3e..f2c8602a1ad7 100644
--- a/sound/pci/echoaudio/echoaudio.c
+++ b/sound/pci/echoaudio/echoaudio.c
@@ -6,6 +6,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/string.h>
 
 MODULE_AUTHOR("Giuliano Pochini <pochini@shiny.it>");
 MODULE_LICENSE("GPL v2");
@@ -236,7 +237,7 @@ static int hw_rule_sample_rate(struct snd_pcm_hw_params *params,
 	struct snd_interval fixed;
 	int err;
 
-	mutex_lock(&chip->mode_mutex);
+	guard(mutex)(&chip->mode_mutex);
 
 	if (chip->can_set_rate) {
 		err = 0;
@@ -246,7 +247,6 @@ static int hw_rule_sample_rate(struct snd_pcm_hw_params *params,
 		err = snd_interval_refine(rate, &fixed);
 	}
 
-	mutex_unlock(&chip->mode_mutex);
 	return err;
 }
 
@@ -414,7 +414,7 @@ static int pcm_digital_in_open(struct snd_pcm_substream *substream)
 	int err, max_channels;
 
 	max_channels = num_digital_busses_in(chip) - substream->number;
-	mutex_lock(&chip->mode_mutex);
+	guard(mutex)(&chip->mode_mutex);
 	if (chip->digital_mode == DIGITAL_MODE_ADAT)
 		err = pcm_open(substream, max_channels);
 	else	/* If the card has ADAT, subtract the 6 channels
@@ -423,24 +423,22 @@ static int pcm_digital_in_open(struct snd_pcm_substream *substream)
 		err = pcm_open(substream, max_channels - ECHOCARD_HAS_ADAT);
 
 	if (err < 0)
-		goto din_exit;
+		return err;
 
 	err = snd_pcm_hw_rule_add(substream->runtime, 0,
 				  SNDRV_PCM_HW_PARAM_CHANNELS,
 				  hw_rule_capture_channels_by_format, NULL,
 				  SNDRV_PCM_HW_PARAM_FORMAT, -1);
 	if (err < 0)
-		goto din_exit;
+		return err;
 	err = snd_pcm_hw_rule_add(substream->runtime, 0,
 				  SNDRV_PCM_HW_PARAM_FORMAT,
 				  hw_rule_capture_format_by_channels, NULL,
 				  SNDRV_PCM_HW_PARAM_CHANNELS, -1);
 	if (err < 0)
-		goto din_exit;
+		return err;
 
-din_exit:
-	mutex_unlock(&chip->mode_mutex);
-	return err;
+	return 0;
 }
 
 
@@ -453,7 +451,7 @@ static int pcm_digital_out_open(struct snd_pcm_substream *substream)
 	int err, max_channels;
 
 	max_channels = num_digital_busses_out(chip) - substream->number;
-	mutex_lock(&chip->mode_mutex);
+	guard(mutex)(&chip->mode_mutex);
 	if (chip->digital_mode == DIGITAL_MODE_ADAT)
 		err = pcm_open(substream, max_channels);
 	else	/* If the card has ADAT, subtract the 6 channels
@@ -462,7 +460,7 @@ static int pcm_digital_out_open(struct snd_pcm_substream *substream)
 		err = pcm_open(substream, max_channels - ECHOCARD_HAS_ADAT);
 
 	if (err < 0)
-		goto dout_exit;
+		return err;
 
 	err = snd_pcm_hw_rule_add(substream->runtime, 0,
 				  SNDRV_PCM_HW_PARAM_CHANNELS,
@@ -470,18 +468,16 @@ static int pcm_digital_out_open(struct snd_pcm_substream *substream)
 				  NULL, SNDRV_PCM_HW_PARAM_FORMAT,
 				  -1);
 	if (err < 0)
-		goto dout_exit;
+		return err;
 	err = snd_pcm_hw_rule_add(substream->runtime, 0,
 				  SNDRV_PCM_HW_PARAM_FORMAT,
 				  hw_rule_playback_format_by_channels,
 				  NULL, SNDRV_PCM_HW_PARAM_CHANNELS,
 				  -1);
 	if (err < 0)
-		goto dout_exit;
+		return err;
 
-dout_exit:
-	mutex_unlock(&chip->mode_mutex);
-	return err;
+	return 0;
 }
 
 #endif /* !ECHOCARD_HAS_VMIXER */
@@ -498,7 +494,7 @@ static int pcm_close(struct snd_pcm_substream *substream)
 	 * freed by its callback
 	 */
 
-	mutex_lock(&chip->mode_mutex);
+	guard(mutex)(&chip->mode_mutex);
 
 	dev_dbg(chip->card->dev, "pcm_open opencount=%d can_set_rate=%d, rate_set=%d",
 		chip->opencount, chip->can_set_rate, chip->rate_set);
@@ -515,7 +511,6 @@ static int pcm_close(struct snd_pcm_substream *substream)
 		break;
 	}
 
-	mutex_unlock(&chip->mode_mutex);
 	return 0;
 }
 
@@ -536,22 +531,21 @@ static int init_engine(struct snd_pcm_substream *substream,
 	/* Sets up che hardware. If it's already initialized, reset and
 	 * redo with the new parameters
 	 */
-	spin_lock_irq(&chip->lock);
-	if (pipe->index >= 0) {
-		dev_dbg(chip->card->dev, "hwp_ie free(%d)\n", pipe->index);
-		err = free_pipes(chip, pipe);
-		snd_BUG_ON(err);
-		chip->substream[pipe->index] = NULL;
-	}
+	scoped_guard(spinlock_irq, &chip->lock) {
+		if (pipe->index >= 0) {
+			dev_dbg(chip->card->dev, "hwp_ie free(%d)\n", pipe->index);
+			err = free_pipes(chip, pipe);
+			snd_BUG_ON(err);
+			chip->substream[pipe->index] = NULL;
+		}
 
-	err = allocate_pipes(chip, pipe, pipe_index, interleave);
-	if (err < 0) {
-		spin_unlock_irq(&chip->lock);
-		dev_err(chip->card->dev, "allocate_pipes(%d) err=%d\n",
-			pipe_index, err);
-		return err;
+		err = allocate_pipes(chip, pipe, pipe_index, interleave);
+		if (err < 0) {
+			dev_err(chip->card->dev, "allocate_pipes(%d) err=%d\n",
+				pipe_index, err);
+			return err;
+		}
 	}
-	spin_unlock_irq(&chip->lock);
 	dev_dbg(chip->card->dev, "allocate_pipes()=%d\n", pipe_index);
 
 	dev_dbg(chip->card->dev,
@@ -599,9 +593,8 @@ static int init_engine(struct snd_pcm_substream *substream,
 	smp_wmb();
 	chip->substream[pipe_index] = substream;
 	chip->rate_set = 1;
-	spin_lock_irq(&chip->lock);
+	guard(spinlock_irq)(&chip->lock);
 	set_sample_rate(chip, hw_params->rate_num / hw_params->rate_den);
-	spin_unlock_irq(&chip->lock);
 	return 0;
 }
 
@@ -663,14 +656,13 @@ static int pcm_hw_free(struct snd_pcm_substream *substream)
 	chip = snd_pcm_substream_chip(substream);
 	pipe = (struct audiopipe *) substream->runtime->private_data;
 
-	spin_lock_irq(&chip->lock);
+	guard(spinlock_irq)(&chip->lock);
 	if (pipe->index >= 0) {
 		dev_dbg(chip->card->dev, "pcm_hw_free(%d)\n", pipe->index);
 		free_pipes(chip, pipe);
 		chip->substream[pipe->index] = NULL;
 		pipe->index = -1;
 	}
-	spin_unlock_irq(&chip->lock);
 
 	return 0;
 }
@@ -720,15 +712,12 @@ static int pcm_prepare(struct snd_pcm_substream *substream)
 	 * exclusive control
 	 */
 
-	spin_lock_irq(&chip->lock);
+	guard(spinlock_irq)(&chip->lock);
 
-	if (snd_BUG_ON(!is_pipe_allocated(chip, pipe_index))) {
-		spin_unlock_irq(&chip->lock);
+	if (snd_BUG_ON(!is_pipe_allocated(chip, pipe_index)))
 		return -EINVAL;
-	}
 
 	set_audio_format(chip, pipe_index, &format);
-	spin_unlock_irq(&chip->lock);
 
 	return 0;
 }
@@ -752,7 +741,7 @@ static int pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 		}
 	}
 
-	spin_lock(&chip->lock);
+	guard(spinlock)(&chip->lock);
 	switch (cmd) {
 	case SNDRV_PCM_TRIGGER_RESUME:
 	case SNDRV_PCM_TRIGGER_START:
@@ -800,7 +789,6 @@ static int pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 	default:
 		err = -EINVAL;
 	}
-	spin_unlock(&chip->lock);
 	return err;
 }
 
@@ -916,7 +904,7 @@ static int snd_echo_new_pcm(struct echoaudio *chip)
 		return err;
 	pcm->private_data = chip;
 	chip->analog_pcm = pcm;
-	strcpy(pcm->name, chip->card->shortname);
+	strscpy(pcm->name, chip->card->shortname);
 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &analog_playback_ops);
 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &analog_capture_ops);
 	snd_echo_preallocate_pages(pcm, &chip->pci->dev);
@@ -929,7 +917,7 @@ static int snd_echo_new_pcm(struct echoaudio *chip)
 		return err;
 	pcm->private_data = chip;
 	chip->digital_pcm = pcm;
-	strcpy(pcm->name, chip->card->shortname);
+	strscpy(pcm->name, chip->card->shortname);
 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &digital_capture_ops);
 	snd_echo_preallocate_pages(pcm, &chip->pci->dev);
 #endif /* ECHOCARD_HAS_DIGITAL_IO */
@@ -949,7 +937,7 @@ static int snd_echo_new_pcm(struct echoaudio *chip)
 		return err;
 	pcm->private_data = chip;
 	chip->analog_pcm = pcm;
-	strcpy(pcm->name, chip->card->shortname);
+	strscpy(pcm->name, chip->card->shortname);
 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &analog_playback_ops);
 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &analog_capture_ops);
 	snd_echo_preallocate_pages(pcm, &chip->pci->dev);
@@ -963,7 +951,7 @@ static int snd_echo_new_pcm(struct echoaudio *chip)
 		return err;
 	pcm->private_data = chip;
 	chip->digital_pcm = pcm;
-	strcpy(pcm->name, chip->card->shortname);
+	strscpy(pcm->name, chip->card->shortname);
 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &digital_playback_ops);
 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &digital_capture_ops);
 	snd_echo_preallocate_pages(pcm, &chip->pci->dev);
@@ -1017,7 +1005,7 @@ static int snd_echo_output_gain_put(struct snd_kcontrol *kcontrol,
 
 	changed = 0;
 	chip = snd_kcontrol_chip(kcontrol);
-	spin_lock_irq(&chip->lock);
+	guard(spinlock_irq)(&chip->lock);
 	for (c = 0; c < num_busses_out(chip); c++) {
 		gain = ucontrol->value.integer.value[c];
 		/* Ignore out of range values */
@@ -1030,7 +1018,6 @@ static int snd_echo_output_gain_put(struct snd_kcontrol *kcontrol,
 	}
 	if (changed)
 		update_output_line_level(chip);
-	spin_unlock_irq(&chip->lock);
 	return changed;
 }
 
@@ -1098,7 +1085,7 @@ static int snd_echo_input_gain_put(struct snd_kcontrol *kcontrol,
 
 	changed = 0;
 	chip = snd_kcontrol_chip(kcontrol);
-	spin_lock_irq(&chip->lock);
+	guard(spinlock_irq)(&chip->lock);
 	for (c = 0; c < num_analog_busses_in(chip); c++) {
 		gain = ucontrol->value.integer.value[c];
 		/* Ignore out of range values */
@@ -1111,7 +1098,6 @@ static int snd_echo_input_gain_put(struct snd_kcontrol *kcontrol,
 	}
 	if (changed)
 		update_input_line_level(chip);
-	spin_unlock_irq(&chip->lock);
 	return changed;
 }
 
@@ -1167,7 +1153,7 @@ static int snd_echo_output_nominal_put(struct snd_kcontrol *kcontrol,
 
 	changed = 0;
 	chip = snd_kcontrol_chip(kcontrol);
-	spin_lock_irq(&chip->lock);
+	guard(spinlock_irq)(&chip->lock);
 	for (c = 0; c < num_analog_busses_out(chip); c++) {
 		if (chip->nominal_level[c] != ucontrol->value.integer.value[c]) {
 			set_nominal_level(chip, c,
@@ -1177,7 +1163,6 @@ static int snd_echo_output_nominal_put(struct snd_kcontrol *kcontrol,
 	}
 	if (changed)
 		update_output_line_level(chip);
-	spin_unlock_irq(&chip->lock);
 	return changed;
 }
 
@@ -1230,7 +1215,7 @@ static int snd_echo_input_nominal_put(struct snd_kcontrol *kcontrol,
 
 	changed = 0;
 	chip = snd_kcontrol_chip(kcontrol);
-	spin_lock_irq(&chip->lock);
+	guard(spinlock_irq)(&chip->lock);
 	for (c = 0; c < num_analog_busses_in(chip); c++) {
 		if (chip->nominal_level[bx_analog_in(chip) + c] !=
 		    ucontrol->value.integer.value[c]) {
@@ -1243,7 +1228,6 @@ static int snd_echo_input_nominal_put(struct snd_kcontrol *kcontrol,
 		update_output_line_level(chip);	/* "Output" is not a mistake
 						 * here.
 						 */
-	spin_unlock_irq(&chip->lock);
 	return changed;
 }
 
@@ -1303,10 +1287,9 @@ static int snd_echo_mixer_put(struct snd_kcontrol *kcontrol,
 	if (gain < ECHOGAIN_MINOUT || gain > ECHOGAIN_MAXOUT)
 		return -EINVAL;
 	if (chip->monitor_gain[out][in] != gain) {
-		spin_lock_irq(&chip->lock);
+		guard(spinlock_irq)(&chip->lock);
 		set_monitor_gain(chip, out, in, gain);
 		update_output_line_level(chip);
-		spin_unlock_irq(&chip->lock);
 		changed = 1;
 	}
 	return changed;
@@ -1366,10 +1349,9 @@ static int snd_echo_vmixer_put(struct snd_kcontrol *kcontrol,
 	if (gain < ECHOGAIN_MINOUT || gain > ECHOGAIN_MAXOUT)
 		return -EINVAL;
 	if (chip->vmixer_gain[out][vch] != ucontrol->value.integer.value[0]) {
-		spin_lock_irq(&chip->lock);
+		guard(spinlock_irq)(&chip->lock);
 		set_vmixer_gain(chip, out, vch, ucontrol->value.integer.value[0]);
 		update_vmixer_level(chip);
-		spin_unlock_irq(&chip->lock);
 		changed = 1;
 	}
 	return changed;
@@ -1439,7 +1421,7 @@ static int snd_echo_digital_mode_put(struct snd_kcontrol *kcontrol,
 	if (dmode != chip->digital_mode) {
 		/* mode_mutex is required to make this operation atomic wrt
 		pcm_digital_*_open() and set_input_clock() functions. */
-		mutex_lock(&chip->mode_mutex);
+		guard(mutex)(&chip->mode_mutex);
 
 		/* Do not allow the user to change the digital mode when a pcm
 		device is open because it also changes the number of channels
@@ -1459,7 +1441,6 @@ static int snd_echo_digital_mode_put(struct snd_kcontrol *kcontrol,
 			if (changed >= 0)
 				changed = 1;	/* No errors */
 		}
-		mutex_unlock(&chip->mode_mutex);
 	}
 	return changed;
 }
@@ -1506,9 +1487,8 @@ static int snd_echo_spdif_mode_put(struct snd_kcontrol *kcontrol,
 	chip = snd_kcontrol_chip(kcontrol);
 	mode = !!ucontrol->value.enumerated.item[0];
 	if (mode != chip->professional_spdif) {
-		spin_lock_irq(&chip->lock);
+		guard(spinlock_irq)(&chip->lock);
 		set_professional_spdif(chip, mode);
-		spin_unlock_irq(&chip->lock);
 		return 1;
 	}
 	return 0;
@@ -1572,13 +1552,11 @@ static int snd_echo_clock_source_put(struct snd_kcontrol *kcontrol,
 		return -EINVAL;
 	dclock = chip->clock_source_list[eclock];
 	if (chip->input_clock != dclock) {
-		mutex_lock(&chip->mode_mutex);
-		spin_lock_irq(&chip->lock);
+		guard(mutex)(&chip->mode_mutex);
+		guard(spinlock_irq)(&chip->lock);
 		changed = set_input_clock(chip, dclock);
 		if (!changed)
 			changed = 1;	/* no errors */
-		spin_unlock_irq(&chip->lock);
-		mutex_unlock(&chip->mode_mutex);
 	}
 
 	if (changed < 0)
@@ -1622,9 +1600,8 @@ static int snd_echo_phantom_power_put(struct snd_kcontrol *kcontrol,
 
 	power = !!ucontrol->value.integer.value[0];
 	if (chip->phantom_power != power) {
-		spin_lock_irq(&chip->lock);
+		guard(spinlock_irq)(&chip->lock);
 		changed = set_phantom_power(chip, power);
-		spin_unlock_irq(&chip->lock);
 		if (changed == 0)
 			changed = 1;	/* no errors */
 	}
@@ -1665,9 +1642,8 @@ static int snd_echo_automute_put(struct snd_kcontrol *kcontrol,
 
 	automute = !!ucontrol->value.integer.value[0];
 	if (chip->digital_in_automute != automute) {
-		spin_lock_irq(&chip->lock);
+		guard(spinlock_irq)(&chip->lock);
 		changed = set_input_auto_mute(chip, automute);
-		spin_unlock_irq(&chip->lock);
 		if (changed == 0)
 			changed = 1;	/* no errors */
 	}
@@ -1695,9 +1671,8 @@ static int snd_echo_vumeters_switch_put(struct snd_kcontrol *kcontrol,
 	struct echoaudio *chip;
 
 	chip = snd_kcontrol_chip(kcontrol);
-	spin_lock_irq(&chip->lock);
+	guard(spinlock_irq)(&chip->lock);
 	set_meters_on(chip, ucontrol->value.integer.value[0]);
-	spin_unlock_irq(&chip->lock);
 	return 1;
 }
 
@@ -1910,7 +1885,7 @@ static int snd_echo_create(struct snd_card *card,
 	chip->can_set_rate = 1;
 
 	/* PCI resource allocation */
-	err = pci_request_regions(pci, ECHOCARD_NAME);
+	err = pcim_request_all_regions(pci, ECHOCARD_NAME);
 	if (err < 0)
 		return err;
 
@@ -1966,7 +1941,6 @@ static int __snd_echo_probe(struct pci_dev *pci,
 	struct snd_card *card;
 	struct echoaudio *chip;
 	char *dsp;
-	__maybe_unused int i;
 	int err;
 
 	if (dev >= SNDRV_CARDS)
@@ -1976,7 +1950,6 @@ static int __snd_echo_probe(struct pci_dev *pci,
 		return -ENOENT;
 	}
 
-	i = 0;
 	err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
 				sizeof(*chip), &card);
 	if (err < 0)
@@ -1987,8 +1960,8 @@ static int __snd_echo_probe(struct pci_dev *pci,
 	if (err < 0)
 		return err;
 
-	strcpy(card->driver, "Echo_" ECHOCARD_NAME);
-	strcpy(card->shortname, chip->card_name);
+	strscpy(card->driver, "Echo_" ECHOCARD_NAME);
+	strscpy(card->shortname, chip->card_name);
 
 	dsp = "56301";
 	if (pci_id->device == 0x3410)
@@ -2080,7 +2053,7 @@ static int __snd_echo_probe(struct pci_dev *pci,
 #ifdef ECHOCARD_HAS_DIGITAL_MODE_SWITCH
 	/* Creates a list of available digital modes */
 	chip->num_digital_modes = 0;
-	for (i = 0; i < 6; i++)
+	for (int i = 0; i < 6; i++)
 		if (chip->digital_modes & (1 << i))
 			chip->digital_mode_list[chip->num_digital_modes++] = i;
 
@@ -2092,7 +2065,7 @@ static int __snd_echo_probe(struct pci_dev *pci,
 #ifdef ECHOCARD_HAS_EXTERNAL_CLOCK
 	/* Creates a list of available clock sources */
 	chip->num_clock_sources = 0;
-	for (i = 0; i < 10; i++)
+	for (int i = 0; i < 10; i++)
 		if (chip->input_clock_types & (1 << i))
 			chip->clock_source_list[chip->num_clock_sources++] = i;
 
@@ -2144,17 +2117,13 @@ static int snd_echo_suspend(struct device *dev)
 	if (chip->midi_out)
 		snd_echo_midi_output_trigger(chip->midi_out, 0);
 #endif
-	spin_lock_irq(&chip->lock);
-	if (wait_handshake(chip)) {
-		spin_unlock_irq(&chip->lock);
-		return -EIO;
-	}
-	clear_handshake(chip);
-	if (send_vector(chip, DSP_VC_GO_COMATOSE) < 0) {
-		spin_unlock_irq(&chip->lock);
-		return -EIO;
+	scoped_guard(spinlock_irq, &chip->lock) {
+		if (wait_handshake(chip))
+			return -EIO;
+		clear_handshake(chip);
+		if (send_vector(chip, DSP_VC_GO_COMATOSE) < 0)
+			return -EIO;
 	}
-	spin_unlock_irq(&chip->lock);
 
 	chip->dsp_code = NULL;
 	free_irq(chip->irq, chip);