linux-kernel - [PATCH V6 05/10] ASoC: codecs: Modify the transmission method of parameters

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Message-ID: <20230928105727.47273-6-wangweidong.a@awinic.com>
Date:   Thu, 28 Sep 2023 18:57:22 +0800
From:   wangweidong.a@...nic.com
To:     girdwood@...il.com, broonie@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
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        linux-kernel@...r.kernel.org
Subject: [PATCH V6 05/10] ASoC: codecs: Modify the transmission method of parameters

From: Weidong Wang <wangweidong.a@...nic.com>

Change the transmission mode of the "aw88395_dev_get_prof_name"
function parameter, Instead of using return values for data
transfer, parameters are used

Signed-off-by: Weidong Wang <wangweidong.a@...nic.com>
---
 sound/soc/codecs/aw88395/aw88395.c        |  9 ++++-----
 sound/soc/codecs/aw88395/aw88395_device.c | 12 ++++++++----
 sound/soc/codecs/aw88395/aw88395_device.h |  2 +-
 3 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/sound/soc/codecs/aw88395/aw88395.c b/sound/soc/codecs/aw88395/aw88395.c
index 9dcd75dd799a..77227c8f01f6 100644
--- a/sound/soc/codecs/aw88395/aw88395.c
+++ b/sound/soc/codecs/aw88395/aw88395.c
@@ -175,9 +175,8 @@ static int aw88395_profile_info(struct snd_kcontrol *kcontrol,
 {
 	struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol);
 	struct aw88395 *aw88395 = snd_soc_component_get_drvdata(codec);
-	const char *prof_name;
-	char *name;
-	int count;
+	char *prof_name, *name;
+	int count, ret;
 
 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 	uinfo->count = 1;
@@ -196,8 +195,8 @@ static int aw88395_profile_info(struct snd_kcontrol *kcontrol,
 	name = uinfo->value.enumerated.name;
 	count = uinfo->value.enumerated.item;
 
-	prof_name = aw88395_dev_get_prof_name(aw88395->aw_pa, count);
-	if (!prof_name) {
+	ret = aw88395_dev_get_prof_name(aw88395->aw_pa, count, &prof_name);
+	if (ret) {
 		strscpy(uinfo->value.enumerated.name, "null",
 						strlen("null") + 1);
 		return 0;
diff --git a/sound/soc/codecs/aw88395/aw88395_device.c b/sound/soc/codecs/aw88395/aw88395_device.c
index 5ca4172cb788..fd1f67d5f22f 100644
--- a/sound/soc/codecs/aw88395/aw88395_device.c
+++ b/sound/soc/codecs/aw88395/aw88395_device.c
@@ -1296,7 +1296,9 @@ int aw88395_dev_fw_update(struct aw_device *aw_dev, bool up_dsp_fw_en, bool forc
 		return -EPERM;
 	}
 
-	prof_name = aw88395_dev_get_prof_name(aw_dev, aw_dev->prof_index);
+	ret = aw88395_dev_get_prof_name(aw_dev, aw_dev->prof_index, &prof_name);
+	if (ret)
+		return ret;
 
 	dev_dbg(aw_dev->dev, "start update %s", prof_name);
 
@@ -1644,7 +1646,7 @@ int aw88395_dev_set_profile_index(struct aw_device *aw_dev, int index)
 }
 EXPORT_SYMBOL_GPL(aw88395_dev_set_profile_index);
 
-char *aw88395_dev_get_prof_name(struct aw_device *aw_dev, int index)
+int aw88395_dev_get_prof_name(struct aw_device *aw_dev, int index, char **prof_name)
 {
 	struct aw_prof_info *prof_info = &aw_dev->prof_info;
 	struct aw_prof_desc *prof_desc;
@@ -1652,12 +1654,14 @@ char *aw88395_dev_get_prof_name(struct aw_device *aw_dev, int index)
 	if ((index >= aw_dev->prof_info.count) || (index < 0)) {
 		dev_err(aw_dev->dev, "index[%d] overflow count[%d]",
 			index, aw_dev->prof_info.count);
-		return NULL;
+		return -EINVAL;
 	}
 
 	prof_desc = &aw_dev->prof_info.prof_desc[index];
 
-	return prof_info->prof_name_list[prof_desc->id];
+	*prof_name = prof_info->prof_name_list[prof_desc->id];
+
+	return 0;
 }
 EXPORT_SYMBOL_GPL(aw88395_dev_get_prof_name);
 
diff --git a/sound/soc/codecs/aw88395/aw88395_device.h b/sound/soc/codecs/aw88395/aw88395_device.h
index d32d16c89509..791c8c106557 100644
--- a/sound/soc/codecs/aw88395/aw88395_device.h
+++ b/sound/soc/codecs/aw88395/aw88395_device.h
@@ -181,7 +181,7 @@ int aw88395_dev_fw_update(struct aw_device *aw_dev, bool up_dsp_fw_en, bool forc
 void aw88395_dev_set_volume(struct aw_device *aw_dev, unsigned short set_vol);
 int aw88395_dev_get_prof_data(struct aw_device *aw_dev, int index,
 			struct aw_prof_desc **prof_desc);
-char *aw88395_dev_get_prof_name(struct aw_device *aw_dev, int index);
+int aw88395_dev_get_prof_name(struct aw_device *aw_dev, int index, char **prof_name);
 int aw88395_dev_set_profile_index(struct aw_device *aw_dev, int index);
 int aw88395_dev_get_profile_index(struct aw_device *aw_dev);
 int aw88395_dev_get_profile_count(struct aw_device *aw_dev);
-- 
2.41.0