linux-kernel - [PATCH v2] ASoC: codecs: Fix an error handling path in (rx|tx|va)_macro

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Date:   Sun,  3 Apr 2022 08:58:27 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
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@...eaurora.org>,
        Venkata Prasad Potturu <quic_potturu@...cinc.com>,
        Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        alsa-devel@...a-project.org
Subject: [PATCH v2] ASoC: codecs: Fix an error handling path in (rx|tx|va)_macro_probe()

After a successful lpass_macro_pds_init() call, lpass_macro_pds_exit() must
be called.

Add the missing call in the error handling path of the probe function and
use it.

Fixes: 9e3d83c52844 ("ASoC: codecs: Add power domains support in digital macro codecs")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
Maybe some lpass_macro_pds_init() calls could be moved in order to simplify
some error handling paths. This would avoid the
s/return/ret = <error>; goto err;/ introduced in this patch.
However I'm always reluctant to shuffle code because it sometimes introduce
some subtle bugs. So I've left it as-is.
Let me know the right direction.
---
 sound/soc/codecs/lpass-rx-macro.c | 14 ++++++++++----
 sound/soc/codecs/lpass-tx-macro.c | 14 ++++++++++----
 sound/soc/codecs/lpass-va-macro.c |  8 ++++++--
 3 files changed, 26 insertions(+), 10 deletions(-)

diff --git a/sound/soc/codecs/lpass-rx-macro.c b/sound/soc/codecs/lpass-rx-macro.c
index 6884ae505e33..3143f9cd7277 100644
--- a/sound/soc/codecs/lpass-rx-macro.c
+++ b/sound/soc/codecs/lpass-rx-macro.c
@@ -3566,12 +3566,16 @@ static int rx_macro_probe(struct platform_device *pdev)
 		return PTR_ERR(rx->pds);
 
 	base = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(base))
-		return PTR_ERR(base);
+	if (IS_ERR(base)) {
+		ret = PTR_ERR(base);
+		goto err;
+	}
 
 	rx->regmap = devm_regmap_init_mmio(dev, base, &rx_regmap_config);
-	if (IS_ERR(rx->regmap))
-		return PTR_ERR(rx->regmap);
+	if (IS_ERR(rx->regmap)) {
+		ret = PTR_ERR(rx->regmap);
+		goto err;
+	}
 
 	dev_set_drvdata(dev, rx);
 
@@ -3632,6 +3636,8 @@ static int rx_macro_probe(struct platform_device *pdev)
 err_dcodec:
 	clk_disable_unprepare(rx->macro);
 err:
+	lpass_macro_pds_exit(rx->pds);
+
 	return ret;
 }
 
diff --git a/sound/soc/codecs/lpass-tx-macro.c b/sound/soc/codecs/lpass-tx-macro.c
index 714a411d5337..55503ba480bb 100644
--- a/sound/soc/codecs/lpass-tx-macro.c
+++ b/sound/soc/codecs/lpass-tx-macro.c
@@ -1828,8 +1828,10 @@ static int tx_macro_probe(struct platform_device *pdev)
 		return PTR_ERR(tx->pds);
 
 	base = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(base))
-		return PTR_ERR(base);
+	if (IS_ERR(base)) {
+		ret = PTR_ERR(base);
+		goto err;
+	}
 
 	/* Update defaults for lpass sc7280 */
 	if (of_device_is_compatible(np, "qcom,sc7280-lpass-tx-macro")) {
@@ -1846,8 +1848,10 @@ static int tx_macro_probe(struct platform_device *pdev)
 	}
 
 	tx->regmap = devm_regmap_init_mmio(dev, base, &tx_regmap_config);
-	if (IS_ERR(tx->regmap))
-		return PTR_ERR(tx->regmap);
+	if (IS_ERR(tx->regmap)) {
+		ret = PTR_ERR(tx->regmap);
+		goto err;
+	}
 
 	dev_set_drvdata(dev, tx);
 
@@ -1907,6 +1911,8 @@ static int tx_macro_probe(struct platform_device *pdev)
 err_dcodec:
 	clk_disable_unprepare(tx->macro);
 err:
+	lpass_macro_pds_exit(tx->pds);
+
 	return ret;
 }
 
diff --git a/sound/soc/codecs/lpass-va-macro.c b/sound/soc/codecs/lpass-va-macro.c
index f3cb596058e0..d18b56e60433 100644
--- a/sound/soc/codecs/lpass-va-macro.c
+++ b/sound/soc/codecs/lpass-va-macro.c
@@ -1434,8 +1434,10 @@ static int va_macro_probe(struct platform_device *pdev)
 		va->dmic_clk_div = VA_MACRO_CLK_DIV_2;
 	} else {
 		ret = va_macro_validate_dmic_sample_rate(sample_rate, va);
-		if (!ret)
-			return -EINVAL;
+		if (!ret) {
+			ret = -EINVAL;
+			goto err;
+		}
 	}
 
 	base = devm_platform_ioremap_resource(pdev, 0);
@@ -1492,6 +1494,8 @@ static int va_macro_probe(struct platform_device *pdev)
 err_dcodec:
 	clk_disable_unprepare(va->macro);
 err:
+	lpass_macro_pds_exit(va->pds);
+
 	return ret;
 }
 
-- 
2.32.0