linux-kernel - [PATCH 2/3] ASoC: stm32: dfsdm: fix debugfs warnings on entry creation

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Message-ID: <1551711165-28684-3-git-send-email-olivier.moysan@st.com>
Date:   Mon, 4 Mar 2019 15:52:44 +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>,
        <arnaud.pouliquen@...com>, <benjamin.gaignard@...com>
Subject: [PATCH 2/3] ASoC: stm32: dfsdm: fix debugfs warnings on entry creation

Register platform component with a prefix, to avoid warnings
on debugfs entries creation, due to component name
redundancy.

Signed-off-by: Olivier Moysan <olivier.moysan@...com>
---
 sound/soc/stm/stm32_adfsdm.c | 21 ++++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)

diff --git a/sound/soc/stm/stm32_adfsdm.c b/sound/soc/stm/stm32_adfsdm.c
index 71d341b732a4..24948b95eb19 100644
--- a/sound/soc/stm/stm32_adfsdm.c
+++ b/sound/soc/stm/stm32_adfsdm.c
@@ -304,6 +304,7 @@ MODULE_DEVICE_TABLE(of, stm32_adfsdm_of_match);
 static int stm32_adfsdm_probe(struct platform_device *pdev)
 {
 	struct stm32_adfsdm_priv *priv;
+	struct snd_soc_component *component;
 	int ret;
 
 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
@@ -331,9 +332,15 @@ static int stm32_adfsdm_probe(struct platform_device *pdev)
 	if (IS_ERR(priv->iio_cb))
 		return PTR_ERR(priv->iio_cb);
 
-	ret = devm_snd_soc_register_component(&pdev->dev,
-					      &stm32_adfsdm_soc_platform,
-					      NULL, 0);
+	component = devm_kzalloc(&pdev->dev, sizeof(*component), GFP_KERNEL);
+	if (!component)
+		return -ENOMEM;
+#ifdef CONFIG_DEBUG_FS
+	component->debugfs_prefix = "pcm";
+#endif
+
+	ret = snd_soc_add_component(&pdev->dev, component,
+				    &stm32_adfsdm_soc_platform, NULL, 0);
 	if (ret < 0)
 		dev_err(&pdev->dev, "%s: Failed to register PCM platform\n",
 			__func__);
@@ -341,12 +348,20 @@ static int stm32_adfsdm_probe(struct platform_device *pdev)
 	return ret;
 }
 
+static int stm32_adfsdm_remove(struct platform_device *pdev)
+{
+	snd_soc_unregister_component(&pdev->dev);
+
+	return 0;
+}
+
 static struct platform_driver stm32_adfsdm_driver = {
 	.driver = {
 		   .name = STM32_ADFSDM_DRV_NAME,
 		   .of_match_table = stm32_adfsdm_of_match,
 		   },
 	.probe = stm32_adfsdm_probe,
+	.remove = stm32_adfsdm_remove,
 };
 
 module_platform_driver(stm32_adfsdm_driver);
-- 
2.7.4