linux-kernel - [PATCH 02/11] ASoC: codecs: audio-iio-aux: Simplify audio_iio_aux

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Message-Id: <20240703-asoc-cleanup-h-v1-2-71219dfd0aef@linaro.org>
Date: Wed, 03 Jul 2024 14:10:56 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, 
 Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>, 
 Srinivas Kandagatla <srinivas.kandagatla@...aro.org>, 
 Banajit Goswami <bgoswami@...cinc.com>
Cc: linux-sound@...r.kernel.org, linux-kernel@...r.kernel.org, 
 alsa-devel@...a-project.org, linux-arm-msm@...r.kernel.org, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH 02/11] ASoC: codecs: audio-iio-aux: Simplify
 audio_iio_aux_probe() with cleanup.h

Allocate the memory with scoped/cleanup.h in audio_iio_aux_probe() to
reduce error handling (less error paths) and make the code a bit
simpler.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 sound/soc/codecs/audio-iio-aux.c | 47 +++++++++++++++-------------------------
 1 file changed, 18 insertions(+), 29 deletions(-)

diff --git a/sound/soc/codecs/audio-iio-aux.c b/sound/soc/codecs/audio-iio-aux.c
index 3969ee45f41e..588e48044c13 100644
--- a/sound/soc/codecs/audio-iio-aux.c
+++ b/sound/soc/codecs/audio-iio-aux.c
@@ -230,8 +230,6 @@ static int audio_iio_aux_probe(struct platform_device *pdev)
 	struct audio_iio_aux_chan *iio_aux_chan;
 	struct device *dev = &pdev->dev;
 	struct audio_iio_aux *iio_aux;
-	const char **names;
-	u32 *invert_ranges;
 	int count;
 	int ret;
 	int i;
@@ -248,22 +246,22 @@ static int audio_iio_aux_probe(struct platform_device *pdev)
 
 	iio_aux->num_chans = count;
 
-	names = kcalloc(iio_aux->num_chans, sizeof(*names), GFP_KERNEL);
+	const char **names __free(kfree) = kcalloc(iio_aux->num_chans,
+						   sizeof(*names),
+						   GFP_KERNEL);
 	if (!names)
 		return -ENOMEM;
 
-	invert_ranges = kcalloc(iio_aux->num_chans, sizeof(*invert_ranges), GFP_KERNEL);
-	if (!invert_ranges) {
-		ret = -ENOMEM;
-		goto out_free_names;
-	}
+	u32 *invert_ranges __free(kfree) = kcalloc(iio_aux->num_chans,
+						   sizeof(*invert_ranges),
+						   GFP_KERNEL);
+	if (!invert_ranges)
+		return -ENOMEM;
 
 	ret = device_property_read_string_array(dev, "io-channel-names",
 						names, iio_aux->num_chans);
-	if (ret < 0) {
-		dev_err_probe(dev, ret, "failed to read io-channel-names\n");
-		goto out_free_invert_ranges;
-	}
+	if (ret < 0)
+		return dev_err_probe(dev, ret, "failed to read io-channel-names\n");
 
 	/*
 	 * snd-control-invert-range is optional and can contain fewer items
@@ -274,10 +272,8 @@ static int audio_iio_aux_probe(struct platform_device *pdev)
 		count = min_t(unsigned int, count, iio_aux->num_chans);
 		ret = device_property_read_u32_array(dev, "snd-control-invert-range",
 						     invert_ranges, count);
-		if (ret < 0) {
-			dev_err_probe(dev, ret, "failed to read snd-control-invert-range\n");
-			goto out_free_invert_ranges;
-		}
+		if (ret < 0)
+			return dev_err_probe(dev, ret, "failed to read snd-control-invert-range\n");
 	}
 
 	for (i = 0; i < iio_aux->num_chans; i++) {
@@ -286,23 +282,16 @@ static int audio_iio_aux_probe(struct platform_device *pdev)
 		iio_aux_chan->is_invert_range = invert_ranges[i];
 
 		iio_aux_chan->iio_chan = devm_iio_channel_get(dev, iio_aux_chan->name);
-		if (IS_ERR(iio_aux_chan->iio_chan)) {
-			ret = PTR_ERR(iio_aux_chan->iio_chan);
-			dev_err_probe(dev, ret, "get IIO channel '%s' failed\n",
-				      iio_aux_chan->name);
-			goto out_free_invert_ranges;
-		}
+		if (IS_ERR(iio_aux_chan->iio_chan))
+			return dev_err_probe(dev, PTR_ERR(iio_aux_chan->iio_chan),
+					     "get IIO channel '%s' failed\n",
+					     iio_aux_chan->name);
 	}
 
 	platform_set_drvdata(pdev, iio_aux);
 
-	ret = devm_snd_soc_register_component(dev, &audio_iio_aux_component_driver,
-					      NULL, 0);
-out_free_invert_ranges:
-	kfree(invert_ranges);
-out_free_names:
-	kfree(names);
-	return ret;
+	return devm_snd_soc_register_component(dev, &audio_iio_aux_component_driver,
+					       NULL, 0);
 }
 
 static const struct of_device_id audio_iio_aux_ids[] = {

-- 
2.43.0