linux-kernel - [PATCH V5 7/8] ASoC: codecs: Modify the transmission mode of function parameters

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Date:   Wed, 27 Sep 2023 20:16:33 +0800
From:   wangweidong.a@...nic.com
To:     lgirdwood@...il.com, broonie@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        perex@...ex.cz, tiwai@...e.com, wangweidong.a@...nic.com,
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        linux-kernel@...r.kernel.org
Subject: [PATCH V5 7/8] ASoC: codecs: Modify the transmission mode of function parameters

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

Change the transmission mode of the "aw88261_dev_get_prof_name"
function parameter

Signed-off-by: Weidong Wang <wangweidong.a@...nic.com>
---
 sound/soc/codecs/aw88261.c | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/sound/soc/codecs/aw88261.c b/sound/soc/codecs/aw88261.c
index 61179e235fbf..45eaf931a69c 100644
--- a/sound/soc/codecs/aw88261.c
+++ b/sound/soc/codecs/aw88261.c
@@ -477,7 +477,7 @@ static int aw88261_dev_reg_update(struct aw88261 *aw88261,
 	return ret;
 }
 
-static char *aw88261_dev_get_prof_name(struct aw_device *aw_dev, int index)
+static int aw88261_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;
@@ -485,12 +485,14 @@ static char *aw88261_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;
 }
 
 static int aw88261_dev_get_prof_data(struct aw_device *aw_dev, int index,
@@ -515,8 +517,8 @@ static int aw88261_dev_fw_update(struct aw88261 *aw88261)
 	char *prof_name;
 	int ret;
 
-	prof_name = aw88261_dev_get_prof_name(aw_dev, aw_dev->prof_index);
-	if (!prof_name) {
+	ret = aw88261_dev_get_prof_name(aw_dev, aw_dev->prof_index, &prof_name);
+	if (ret) {
 		dev_err(aw_dev->dev, "get prof name failed");
 		return -EINVAL;
 	}
@@ -818,9 +820,8 @@ static int aw88261_profile_info(struct snd_kcontrol *kcontrol,
 {
 	struct snd_soc_component *codec = snd_soc_kcontrol_component(kcontrol);
 	struct aw88261 *aw88261 = 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;
@@ -839,8 +840,8 @@ static int aw88261_profile_info(struct snd_kcontrol *kcontrol,
 	name = uinfo->value.enumerated.name;
 	count = uinfo->value.enumerated.item;
 
-	prof_name = aw88261_dev_get_prof_name(aw88261->aw_pa, count);
-	if (!prof_name) {
+	ret = aw88261_dev_get_prof_name(aw88261->aw_pa, count, &prof_name);
+	if (ret) {
 		strscpy(uinfo->value.enumerated.name, "null",
 						strlen("null") + 1);
 		return 0;
-- 
2.41.0