linux-kernel - [PATCH 6.0 406/862] ASoC: stm32: spdifrx: Fix PM disable depth imbalance in stm32_spdifrx

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Message-Id: <20221019083307.893761182@linuxfoundation.org>
Date:   Wed, 19 Oct 2022 10:28:13 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Zhang Qilong <zhangqilong3@...wei.com>,
        Olivier Moysan <olivier.moysan@...s.st.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 6.0 406/862] ASoC: stm32: spdifrx: Fix PM disable depth imbalance in stm32_spdifrx_probe

From: Zhang Qilong <zhangqilong3@...wei.com>

[ Upstream commit 0325cc0ac7980e1c7b744aab8df59afab6daeb43 ]

The pm_runtime_enable will increase power disable depth. Thus
a pairing decrement is needed on the error handling path to
keep it balanced according to context. We fix it by moving
pm_runtime_enable to the endding of stm32_spdifrx_probe.

Fixes:ac5e3efd55868 ("ASoC: stm32: spdifrx: add pm_runtime support")

Signed-off-by: Zhang Qilong <zhangqilong3@...wei.com>
Reviewed-by: Olivier Moysan <olivier.moysan@...s.st.com>
Link: https://lore.kernel.org/r/20220927142601.64266-3-zhangqilong3@huawei.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 sound/soc/stm/stm32_spdifrx.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/stm/stm32_spdifrx.c b/sound/soc/stm/stm32_spdifrx.c
index 0f7146756717..d399c906bb92 100644
--- a/sound/soc/stm/stm32_spdifrx.c
+++ b/sound/soc/stm/stm32_spdifrx.c
@@ -1002,8 +1002,6 @@ static int stm32_spdifrx_probe(struct platform_device *pdev)
 	udelay(2);
 	reset_control_deassert(rst);
 
-	pm_runtime_enable(&pdev->dev);
-
 	pcm_config = &stm32_spdifrx_pcm_config;
 	ret = snd_dmaengine_pcm_register(&pdev->dev, pcm_config, 0);
 	if (ret)
@@ -1036,6 +1034,8 @@ static int stm32_spdifrx_probe(struct platform_device *pdev)
 			FIELD_GET(SPDIFRX_VERR_MIN_MASK, ver));
 	}
 
+	pm_runtime_enable(&pdev->dev);
+
 	return ret;
 
 error:
-- 
2.35.1