linux-kernel - [PATCH 01/11] ASoC: codecs: audio-iio-aux: Simplify audio_iio_aux_add

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Message-Id: <20240703-asoc-cleanup-h-v1-1-71219dfd0aef@linaro.org>
Date: Wed, 03 Jul 2024 14:10:55 +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 01/11] ASoC: codecs: audio-iio-aux: Simplify
 audio_iio_aux_add_dapms() with cleanup.h

Allocate the memory with scoped/cleanup.h in audio_iio_aux_add_dapms()
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 | 36 +++++++++++-------------------------
 1 file changed, 11 insertions(+), 25 deletions(-)

diff --git a/sound/soc/codecs/audio-iio-aux.c b/sound/soc/codecs/audio-iio-aux.c
index 1e8e1effc2af..3969ee45f41e 100644
--- a/sound/soc/codecs/audio-iio-aux.c
+++ b/sound/soc/codecs/audio-iio-aux.c
@@ -6,6 +6,7 @@
 //
 // Author: Herve Codina <herve.codina@...tlin.com>
 
+#include <linux/cleanup.h>
 #include <linux/iio/consumer.h>
 #include <linux/minmax.h>
 #include <linux/mod_devicetable.h>
@@ -131,33 +132,27 @@ static int audio_iio_aux_add_dapms(struct snd_soc_component *component,
 				   struct audio_iio_aux_chan *chan)
 {
 	struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
-	char *output_name;
-	char *input_name;
-	char *pga_name;
 	int ret;
 
-	input_name = kasprintf(GFP_KERNEL, "%s IN", chan->name);
+	/* Allocated names are not needed afterwards (duplicated in ASoC internals) */
+	char *input_name __free(kfree) = kasprintf(GFP_KERNEL, "%s IN", chan->name);
 	if (!input_name)
 		return -ENOMEM;
 
-	output_name = kasprintf(GFP_KERNEL, "%s OUT", chan->name);
-	if (!output_name) {
-		ret = -ENOMEM;
-		goto out_free_input_name;
-	}
+	char *output_name __free(kfree) = kasprintf(GFP_KERNEL, "%s OUT", chan->name);
+	if (!output_name)
+		return -ENOMEM;
 
-	pga_name = kasprintf(GFP_KERNEL, "%s PGA", chan->name);
-	if (!pga_name) {
-		ret = -ENOMEM;
-		goto out_free_output_name;
-	}
+	char *pga_name __free(kfree) = kasprintf(GFP_KERNEL, "%s PGA", chan->name);
+	if (!pga_name)
+		return -ENOMEM;
 
 	widgets[0] = SND_SOC_DAPM_INPUT(input_name);
 	widgets[1] = SND_SOC_DAPM_OUTPUT(output_name);
 	widgets[2] = SND_SOC_DAPM_PGA(pga_name, SND_SOC_NOPM, 0, 0, NULL, 0);
 	ret = snd_soc_dapm_new_controls(dapm, widgets, 3);
 	if (ret)
-		goto out_free_pga_name;
+		return ret;
 
 	routes[0].sink = pga_name;
 	routes[0].control = NULL;
@@ -165,17 +160,8 @@ static int audio_iio_aux_add_dapms(struct snd_soc_component *component,
 	routes[1].sink = output_name;
 	routes[1].control = NULL;
 	routes[1].source = pga_name;
-	ret = snd_soc_dapm_add_routes(dapm, routes, 2);
 
-	/* Allocated names are no more needed (duplicated in ASoC internals) */
-
-out_free_pga_name:
-	kfree(pga_name);
-out_free_output_name:
-	kfree(output_name);
-out_free_input_name:
-	kfree(input_name);
-	return ret;
+	return snd_soc_dapm_add_routes(dapm, routes, 2);
 }
 
 static int audio_iio_aux_component_probe(struct snd_soc_component *component)

-- 
2.43.0