linux-kernel - [PATCH v2] ASoC: fsl_asrc fsl_esai fsl_sai: allow CONFIG

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Message-Id: <20221028154534.112175-1-maarten.zanders@mind.be>
Date:   Fri, 28 Oct 2022 17:45:34 +0200
From:   Maarten Zanders <maarten.zanders@...d.be>
To:     Shengjiu Wang <shengjiu.wang@...il.com>,
        Xiubo Li <Xiubo.Lee@...il.com>,
        Fabio Estevam <festevam@...il.com>,
        Nicolin Chen <nicoleotsuka@...il.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Cc:     Maarten Zanders <maarten.zanders@...d.be>,
        alsa-devel@...a-project.org, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2] ASoC: fsl_asrc fsl_esai fsl_sai: allow CONFIG_PM=N

When CONFIG_PM=N, pm_runtime_put_sync() returns -ENOSYS
which breaks the probe function of these drivers.

Other users of pm_runtime_put_sync() typically don't check
the return value. In order to keep the program flow as
intended, check for -ENOSYS.

This commit is similar to
commit 0434d3f4525a ("mailbox/omap: Handle if CONFIG_PM is disabled")

This commit fixes
commit cab04ab5900f ("ASoC: fsl_asrc: Don't use devm_regmap_init_mmio_clk")
commit 203773e39347 ("ASoC: fsl_esai: Don't use devm_regmap_init_mmio_clk")
commit 2277e7e36b4b ("ASoC: fsl_sai: Don't use devm_regmap_init_mmio_clk")

Signed-off-by: Maarten Zanders <maarten.zanders@...d.be>
---
 sound/soc/fsl/fsl_asrc.c | 2 +-
 sound/soc/fsl/fsl_esai.c | 2 +-
 sound/soc/fsl/fsl_sai.c  | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/sound/soc/fsl/fsl_asrc.c b/sound/soc/fsl/fsl_asrc.c
index 936aef5d2767..e16e7b3fa96c 100644
--- a/sound/soc/fsl/fsl_asrc.c
+++ b/sound/soc/fsl/fsl_asrc.c
@@ -1232,7 +1232,7 @@ static int fsl_asrc_probe(struct platform_device *pdev)
 	}
 
 	ret = pm_runtime_put_sync(&pdev->dev);
-	if (ret < 0)
+	if (ret < 0 && ret != -ENOSYS)
 		goto err_pm_get_sync;
 
 	ret = devm_snd_soc_register_component(&pdev->dev, &fsl_asrc_component,
diff --git a/sound/soc/fsl/fsl_esai.c b/sound/soc/fsl/fsl_esai.c
index 5c21fc490fce..17fefd27ec90 100644
--- a/sound/soc/fsl/fsl_esai.c
+++ b/sound/soc/fsl/fsl_esai.c
@@ -1069,7 +1069,7 @@ static int fsl_esai_probe(struct platform_device *pdev)
 	regmap_write(esai_priv->regmap, REG_ESAI_RSMB, 0);
 
 	ret = pm_runtime_put_sync(&pdev->dev);
-	if (ret < 0)
+	if (ret < 0 && ret != -ENOSYS)
 		goto err_pm_get_sync;
 
 	/*
diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
index 81f89f6767a2..e60c7b344562 100644
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -1446,7 +1446,7 @@ static int fsl_sai_probe(struct platform_device *pdev)
 	}
 
 	ret = pm_runtime_put_sync(dev);
-	if (ret < 0)
+	if (ret < 0 && ret != -ENOSYS)
 		goto err_pm_get_sync;
 
 	/*
-- 
2.37.3