linux-kernel - [PATCH 5/6] ASoC: stm32: spdifrx: improve error management on probe deferral

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Date:   Mon, 3 Feb 2020 11:08:13 +0100
From:   Olivier Moysan <olivier.moysan@...com>
To:     <lgirdwood@...il.com>, <broonie@...nel.org>, <perex@...ex.cz>,
        <tiwai@...e.com>, <mcoquelin.stm32@...il.com>,
        <alexandre.torgue@...com>, <alsa-devel@...a-project.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-kernel@...r.kernel.org>, <olivier.moysan@...com>
CC:     Etienne Carriere <etienne.carriere@...com>
Subject: [PATCH 5/6] ASoC: stm32: spdifrx: improve error management on probe deferral

Do not print an error trace when deferring probe for SPDIFRX driver.

Signed-off-by: Etienne Carriere <etienne.carriere@...com>
Signed-off-by: Olivier Moysan <olivier.moysan@...com>
---
 sound/soc/stm/stm32_spdifrx.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/sound/soc/stm/stm32_spdifrx.c b/sound/soc/stm/stm32_spdifrx.c
index 9f80ddf34443..49766afdae61 100644
--- a/sound/soc/stm/stm32_spdifrx.c
+++ b/sound/soc/stm/stm32_spdifrx.c
@@ -406,7 +406,9 @@ static int stm32_spdifrx_dma_ctrl_register(struct device *dev,
 
 	spdifrx->ctrl_chan = dma_request_chan(dev, "rx-ctrl");
 	if (IS_ERR(spdifrx->ctrl_chan)) {
-		dev_err(dev, "dma_request_slave_channel failed\n");
+		if (PTR_ERR(spdifrx->ctrl_chan) != -EPROBE_DEFER)
+			dev_err(dev, "dma_request_slave_channel error %ld\n",
+				PTR_ERR(spdifrx->ctrl_chan));
 		return PTR_ERR(spdifrx->ctrl_chan);
 	}
 
@@ -929,7 +931,9 @@ static int stm32_spdifrx_parse_of(struct platform_device *pdev,
 
 	spdifrx->kclk = devm_clk_get(&pdev->dev, "kclk");
 	if (IS_ERR(spdifrx->kclk)) {
-		dev_err(&pdev->dev, "Could not get kclk\n");
+		if (PTR_ERR(spdifrx->kclk) != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "Could not get kclk: %ld\n",
+				PTR_ERR(spdifrx->kclk));
 		return PTR_ERR(spdifrx->kclk);
 	}
 
@@ -967,7 +971,9 @@ static int stm32_spdifrx_probe(struct platform_device *pdev)
 						    spdifrx->base,
 						    spdifrx->regmap_conf);
 	if (IS_ERR(spdifrx->regmap)) {
-		dev_err(&pdev->dev, "Regmap init failed\n");
+		if (PTR_ERR(spdifrx->regmap) != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "Regmap init error %ld\n",
+				PTR_ERR(spdifrx->regmap));
 		return PTR_ERR(spdifrx->regmap);
 	}
 
@@ -1003,7 +1009,8 @@ static int stm32_spdifrx_probe(struct platform_device *pdev)
 	pcm_config = &stm32_spdifrx_pcm_config;
 	ret = devm_snd_dmaengine_pcm_register(&pdev->dev, pcm_config, 0);
 	if (ret) {
-		dev_err(&pdev->dev, "PCM DMA register returned %d\n", ret);
+		if (ret != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "PCM DMA register error %d\n", ret);
 		goto error;
 	}
 
-- 
2.17.1