ASoC: sti: fix errors management

Add missing error messages.
Propagate error of uni_reader_init and uni_reader_init.
Add return at end of dev_err strings.
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sti/sti_uniperif.c

@@ -293,7 +293,7 @@ static int sti_uniperiph_dai_suspend(struct snd_soc_dai *dai)
 
 	/* The uniperipheral should be in stopped state */
 	if (uni->state != UNIPERIF_STATE_STOPPED) {
-		dev_err(uni->dev, "%s: invalid uni state( %d)",
+		dev_err(uni->dev, "%s: invalid uni state( %d)\n",
 			__func__, (int)uni->state);
 		return -EBUSY;
 	}
@@ -301,7 +301,7 @@ static int sti_uniperiph_dai_suspend(struct snd_soc_dai *dai)
 	/* Pinctrl: switch pinstate to sleep */
 	ret = pinctrl_pm_select_sleep_state(uni->dev);
 	if (ret)
-		dev_err(uni->dev, "%s: failed to select pinctrl state",
+		dev_err(uni->dev, "%s: failed to select pinctrl state\n",
 			__func__);
 
 	return ret;
@@ -322,7 +322,7 @@ static int sti_uniperiph_dai_resume(struct snd_soc_dai *dai)
 	/* pinctrl: switch pinstate to default */
 	ret = pinctrl_pm_select_default_state(uni->dev);
 	if (ret)
-		dev_err(uni->dev, "%s: failed to select pinctrl state",
+		dev_err(uni->dev, "%s: failed to select pinctrl state\n",
 			__func__);
 
 	return ret;
@@ -366,11 +366,12 @@ static int sti_uniperiph_cpu_dai_of(struct device_node *node,
 	const struct of_device_id *of_id;
 	const struct sti_uniperiph_dev_data *dev_data;
 	const char *mode;
+	int ret;
 
 	/* Populate data structure depending on compatibility */
 	of_id = of_match_node(snd_soc_sti_match, node);
 	if (!of_id->data) {
-		dev_err(dev, "data associated to device is missing");
+		dev_err(dev, "data associated to device is missing\n");
 		return -EINVAL;
 	}
 	dev_data = (struct sti_uniperiph_dev_data *)of_id->data;
@@ -389,7 +390,7 @@ static int sti_uniperiph_cpu_dai_of(struct device_node *node,
 	uni->mem_region = platform_get_resource(priv->pdev, IORESOURCE_MEM, 0);
 
 	if (!uni->mem_region) {
-		dev_err(dev, "Failed to get memory resource");
+		dev_err(dev, "Failed to get memory resource\n");
 		return -ENODEV;
 	}
 
@@ -403,7 +404,7 @@ static int sti_uniperiph_cpu_dai_of(struct device_node *node,
 
 	uni->irq = platform_get_irq(priv->pdev, 0);
 	if (uni->irq < 0) {
-		dev_err(dev, "Failed to get IRQ resource");
+		dev_err(dev, "Failed to get IRQ resource\n");
 		return -ENXIO;
 	}
 
@@ -421,12 +422,15 @@ static int sti_uniperiph_cpu_dai_of(struct device_node *node,
 	dai_data->stream = dev_data->stream;
 
 	if (priv->dai_data.stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		uni_player_init(priv->pdev, uni);
+		ret = uni_player_init(priv->pdev, uni);
 		stream = &dai->playback;
 	} else {
-		uni_reader_init(priv->pdev, uni);
+		ret = uni_reader_init(priv->pdev, uni);
 		stream = &dai->capture;
 	}
+	if (ret < 0)
+		return ret;
+
 	dai->ops = uni->dai_ops;
 
 	stream->stream_name = dai->name;

sound/soc/sti/uniperif_player.c

@@ -67,7 +67,7 @@ static inline int reset_player(struct uniperif *player)
 	}
 
 	if (!count) {
-		dev_err(player->dev, "Failed to reset uniperif");
+		dev_err(player->dev, "Failed to reset uniperif\n");
 		return -EIO;
 	}
 
@@ -97,7 +97,7 @@ static irqreturn_t uni_player_irq_handler(int irq, void *dev_id)
 
 	/* Check for fifo error (underrun) */
 	if (unlikely(status & UNIPERIF_ITS_FIFO_ERROR_MASK(player))) {
-		dev_err(player->dev, "FIFO underflow error detected");
+		dev_err(player->dev, "FIFO underflow error detected\n");
 
 		/* Interrupt is just for information when underflow recovery */
 		if (player->underflow_enabled) {
@@ -119,7 +119,7 @@ static irqreturn_t uni_player_irq_handler(int irq, void *dev_id)
 
 	/* Check for dma error (overrun) */
 	if (unlikely(status & UNIPERIF_ITS_DMA_ERROR_MASK(player))) {
-		dev_err(player->dev, "DMA error detected");
+		dev_err(player->dev, "DMA error detected\n");
 
 		/* Disable interrupt so doesn't continually fire */
 		SET_UNIPERIF_ITM_BCLR_DMA_ERROR(player);
@@ -135,11 +135,14 @@ static irqreturn_t uni_player_irq_handler(int irq, void *dev_id)
 	/* Check for underflow recovery done */
 	if (unlikely(status & UNIPERIF_ITM_UNDERFLOW_REC_DONE_MASK(player))) {
 		if (!player->underflow_enabled) {
-			dev_err(player->dev, "unexpected Underflow recovering");
+			dev_err(player->dev,
+				"unexpected Underflow recovering\n");
 			return -EPERM;
 		}
 		/* Read the underflow recovery duration */
 		tmp = GET_UNIPERIF_STATUS_1_UNDERFLOW_DURATION(player);
+		dev_dbg(player->dev, "Underflow recovered (%d LR clocks max)\n",
+			tmp);
 
 		/* Clear the underflow recovery duration */
 		SET_UNIPERIF_BIT_CONTROL_CLR_UNDERFLOW_DURATION(player);
@@ -153,7 +156,7 @@ static irqreturn_t uni_player_irq_handler(int irq, void *dev_id)
 	/* Check if underflow recovery failed */
 	if (unlikely(status &
 		     UNIPERIF_ITM_UNDERFLOW_REC_FAILED_MASK(player))) {
-		dev_err(player->dev, "Underflow recovery failed");
+		dev_err(player->dev, "Underflow recovery failed\n");
 
 		/* Stop the player */
 		snd_pcm_stream_lock(player->substream);
@@ -336,7 +339,7 @@ static int uni_player_prepare_iec958(struct uniperif *player,
 
 	/* Oversampling must be multiple of 128 as iec958 frame is 32-bits */
 	if ((clk_div % 128) || (clk_div <= 0)) {
-		dev_err(player->dev, "%s: invalid clk_div %d",
+		dev_err(player->dev, "%s: invalid clk_div %d\n",
 			__func__, clk_div);
 		return -EINVAL;
 	}
@@ -359,7 +362,7 @@ static int uni_player_prepare_iec958(struct uniperif *player,
 		SET_UNIPERIF_I2S_FMT_DATA_SIZE_24(player);
 		break;
 	default:
-		dev_err(player->dev, "format not supported");
+		dev_err(player->dev, "format not supported\n");
 		return -EINVAL;
 	}
 
@@ -448,12 +451,12 @@ static int uni_player_prepare_pcm(struct uniperif *player,
 	 * for 16 bits must be a multiple of 64
 	 */
 	if ((slot_width == 32) && (clk_div % 128)) {
-		dev_err(player->dev, "%s: invalid clk_div", __func__);
+		dev_err(player->dev, "%s: invalid clk_div\n", __func__);
 		return -EINVAL;
 	}
 
 	if ((slot_width == 16) && (clk_div % 64)) {
-		dev_err(player->dev, "%s: invalid clk_div", __func__);
+		dev_err(player->dev, "%s: invalid clk_div\n", __func__);
 		return -EINVAL;
 	}
 
@@ -471,7 +474,7 @@ static int uni_player_prepare_pcm(struct uniperif *player,
 		SET_UNIPERIF_I2S_FMT_DATA_SIZE_16(player);
 		break;
 	default:
-		dev_err(player->dev, "subframe format not supported");
+		dev_err(player->dev, "subframe format not supported\n");
 		return -EINVAL;
 	}
 
@@ -491,7 +494,7 @@ static int uni_player_prepare_pcm(struct uniperif *player,
 		break;
 
 	default:
-		dev_err(player->dev, "format not supported");
+		dev_err(player->dev, "format not supported\n");
 		return -EINVAL;
 	}
 
@@ -504,7 +507,7 @@ static int uni_player_prepare_pcm(struct uniperif *player,
 	/* Number of channelsmust be even*/
 	if ((runtime->channels % 2) || (runtime->channels < 2) ||
 	    (runtime->channels > 10)) {
-		dev_err(player->dev, "%s: invalid nb of channels", __func__);
+		dev_err(player->dev, "%s: invalid nb of channels\n", __func__);
 		return -EINVAL;
 	}
 
@@ -758,7 +761,7 @@ static int uni_player_prepare(struct snd_pcm_substream *substream,
 
 	/* The player should be stopped */
 	if (player->state != UNIPERIF_STATE_STOPPED) {
-		dev_err(player->dev, "%s: invalid player state %d", __func__,
+		dev_err(player->dev, "%s: invalid player state %d\n", __func__,
 			player->state);
 		return -EINVAL;
 	}
@@ -787,7 +790,8 @@ static int uni_player_prepare(struct snd_pcm_substream *substream,
 	/* Trigger limit must be an even number */
 	if ((!trigger_limit % 2) || (trigger_limit != 1 && transfer_size % 2) ||
 	    (trigger_limit > UNIPERIF_CONFIG_DMA_TRIG_LIMIT_MASK(player))) {
-		dev_err(player->dev, "invalid trigger limit %d", trigger_limit);
+		dev_err(player->dev, "invalid trigger limit %d\n",
+			trigger_limit);
 		return -EINVAL;
 	}
 
@@ -808,7 +812,7 @@ static int uni_player_prepare(struct snd_pcm_substream *substream,
 		ret = uni_player_prepare_tdm(player, runtime);
 		break;
 	default:
-		dev_err(player->dev, "invalid player type");
+		dev_err(player->dev, "invalid player type\n");
 		return -EINVAL;
 	}
 
@@ -848,7 +852,7 @@ static int uni_player_prepare(struct snd_pcm_substream *substream,
 		SET_UNIPERIF_I2S_FMT_PADDING_SONY_MODE(player);
 		break;
 	default:
-		dev_err(player->dev, "format not supported");
+		dev_err(player->dev, "format not supported\n");
 		return -EINVAL;
 	}
 
@@ -866,13 +870,13 @@ static int uni_player_start(struct uniperif *player)
 
 	/* The player should be stopped */
 	if (player->state != UNIPERIF_STATE_STOPPED) {
-		dev_err(player->dev, "%s: invalid player state", __func__);
+		dev_err(player->dev, "%s: invalid player state\n", __func__);
 		return -EINVAL;
 	}
 
 	ret = clk_prepare_enable(player->clk);
 	if (ret) {
-		dev_err(player->dev, "%s: Failed to enable clock", __func__);
+		dev_err(player->dev, "%s: Failed to enable clock\n", __func__);
 		return ret;
 	}
 
@@ -934,7 +938,7 @@ static int uni_player_stop(struct uniperif *player)
 
 	/* The player should not be in stopped state */
 	if (player->state == UNIPERIF_STATE_STOPPED) {
-		dev_err(player->dev, "%s: invalid player state", __func__);
+		dev_err(player->dev, "%s: invalid player state\n", __func__);
 		return -EINVAL;
 	}
 
@@ -969,7 +973,7 @@ int uni_player_resume(struct uniperif *player)
 		ret = regmap_field_write(player->clk_sel, 1);
 		if (ret) {
 			dev_err(player->dev,
-				"%s: Failed to select freq synth clock",
+				"%s: Failed to select freq synth clock\n",
 				__func__);
 			return ret;
 		}
@@ -1066,7 +1070,7 @@ int uni_player_init(struct platform_device *pdev,
 	ret = uni_player_parse_dt_audio_glue(pdev, player);
 
 	if (ret < 0) {
-		dev_err(player->dev, "Failed to parse DeviceTree");
+		dev_err(player->dev, "Failed to parse DeviceTree\n");
 		return ret;
 	}
 
@@ -1081,15 +1085,17 @@ int uni_player_init(struct platform_device *pdev,
 
 	/* Get uniperif resource */
 	player->clk = of_clk_get(pdev->dev.of_node, 0);
-	if (IS_ERR(player->clk))
+	if (IS_ERR(player->clk)) {
+		dev_err(player->dev, "Failed to get clock\n");
 		ret = PTR_ERR(player->clk);
+	}
 
 	/* Select the frequency synthesizer clock */
 	if (player->clk_sel) {
 		ret = regmap_field_write(player->clk_sel, 1);
 		if (ret) {
 			dev_err(player->dev,
-				"%s: Failed to select freq synth clock",
+				"%s: Failed to select freq synth clock\n",
 				__func__);
 			return ret;
 		}
@@ -1101,7 +1107,7 @@ int uni_player_init(struct platform_device *pdev,
 		ret = regmap_field_write(player->valid_sel, player->id);
 		if (ret) {
 			dev_err(player->dev,
-				"%s: unable to connect to tdm bus", __func__);
+				"%s: unable to connect to tdm bus\n", __func__);
 			return ret;
 		}
 	}
@@ -1109,8 +1115,10 @@ int uni_player_init(struct platform_device *pdev,
 	ret = devm_request_irq(&pdev->dev, player->irq,
 			       uni_player_irq_handler, IRQF_SHARED,
 			       dev_name(&pdev->dev), player);
-	if (ret < 0)
+	if (ret < 0) {
+		dev_err(player->dev, "unable to request IRQ %d\n", player->irq);
 		return ret;
+	}
 
 	mutex_init(&player->ctrl_lock);
 

sound/soc/sti/uniperif_reader.c

@@ -52,7 +52,7 @@ static irqreturn_t uni_reader_irq_handler(int irq, void *dev_id)
 
 	if (reader->state == UNIPERIF_STATE_STOPPED) {
 		/* Unexpected IRQ: do nothing */
-		dev_warn(reader->dev, "unexpected IRQ ");
+		dev_warn(reader->dev, "unexpected IRQ\n");
 		return IRQ_HANDLED;
 	}
 
@@ -62,7 +62,7 @@ static irqreturn_t uni_reader_irq_handler(int irq, void *dev_id)
 
 	/* Check for fifo overflow error */
 	if (unlikely(status & UNIPERIF_ITS_FIFO_ERROR_MASK(reader))) {
-		dev_err(reader->dev, "FIFO error detected");
+		dev_err(reader->dev, "FIFO error detected\n");
 
 		snd_pcm_stream_lock(reader->substream);
 		snd_pcm_stop(reader->substream, SNDRV_PCM_STATE_XRUN);
@@ -105,7 +105,7 @@ static int uni_reader_prepare_pcm(struct snd_pcm_runtime *runtime,
 		SET_UNIPERIF_I2S_FMT_DATA_SIZE_16(reader);
 		break;
 	default:
-		dev_err(reader->dev, "subframe format not supported");
+		dev_err(reader->dev, "subframe format not supported\n");
 		return -EINVAL;
 	}
 
@@ -125,14 +125,14 @@ static int uni_reader_prepare_pcm(struct snd_pcm_runtime *runtime,
 		break;
 
 	default:
-		dev_err(reader->dev, "format not supported");
+		dev_err(reader->dev, "format not supported\n");
 		return -EINVAL;
 	}
 
 	/* Number of channels must be even */
 	if ((runtime->channels % 2) || (runtime->channels < 2) ||
 	    (runtime->channels > 10)) {
-		dev_err(reader->dev, "%s: invalid nb of channels", __func__);
+		dev_err(reader->dev, "%s: invalid nb of channels\n", __func__);
 		return -EINVAL;
 	}
 
@@ -190,7 +190,7 @@ static int uni_reader_prepare(struct snd_pcm_substream *substream,
 
 	/* The reader should be stopped */
 	if (reader->state != UNIPERIF_STATE_STOPPED) {
-		dev_err(reader->dev, "%s: invalid reader state %d", __func__,
+		dev_err(reader->dev, "%s: invalid reader state %d\n", __func__,
 			reader->state);
 		return -EINVAL;
 	}
@@ -219,7 +219,8 @@ static int uni_reader_prepare(struct snd_pcm_substream *substream,
 	if ((!trigger_limit % 2) ||
 	    (trigger_limit != 1 && transfer_size % 2) ||
 	    (trigger_limit > UNIPERIF_CONFIG_DMA_TRIG_LIMIT_MASK(reader))) {
-		dev_err(reader->dev, "invalid trigger limit %d", trigger_limit);
+		dev_err(reader->dev, "invalid trigger limit %d\n",
+			trigger_limit);
 		return -EINVAL;
 	}
 
@@ -246,7 +247,7 @@ static int uni_reader_prepare(struct snd_pcm_substream *substream,
 		SET_UNIPERIF_I2S_FMT_PADDING_SONY_MODE(reader);
 		break;
 	default:
-		dev_err(reader->dev, "format not supported");
+		dev_err(reader->dev, "format not supported\n");
 		return -EINVAL;
 	}
 
@@ -294,7 +295,7 @@ static int uni_reader_prepare(struct snd_pcm_substream *substream,
 		count--;
 	}
 	if (!count) {
-		dev_err(reader->dev, "Failed to reset uniperif");
+		dev_err(reader->dev, "Failed to reset uniperif\n");
 		return -EIO;
 	}
 
@@ -305,7 +306,7 @@ static int uni_reader_start(struct uniperif *reader)
 {
 	/* The reader should be stopped */
 	if (reader->state != UNIPERIF_STATE_STOPPED) {
-		dev_err(reader->dev, "%s: invalid reader state", __func__);
+		dev_err(reader->dev, "%s: invalid reader state\n", __func__);
 		return -EINVAL;
 	}
 
@@ -325,7 +326,7 @@ static int uni_reader_stop(struct uniperif *reader)
 {
 	/* The reader should not be in stopped state */
 	if (reader->state == UNIPERIF_STATE_STOPPED) {
-		dev_err(reader->dev, "%s: invalid reader state", __func__);
+		dev_err(reader->dev, "%s: invalid reader state\n", __func__);
 		return -EINVAL;
 	}
 
@@ -423,7 +424,7 @@ int uni_reader_init(struct platform_device *pdev,
 			       uni_reader_irq_handler, IRQF_SHARED,
 			       dev_name(&pdev->dev), reader);
 	if (ret < 0) {
-		dev_err(&pdev->dev, "Failed to request IRQ");
+		dev_err(&pdev->dev, "Failed to request IRQ\n");
 		return -EBUSY;
 	}