linux-kernel - [PATCH 6.0 314/862] spi: cadence-quadspi: Fix PM disable depth imbalance in cqspi

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Date:   Wed, 19 Oct 2022 10:26:41 +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>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 6.0 314/862] spi: cadence-quadspi: Fix PM disable depth imbalance in cqspi_probe

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

[ Upstream commit 4d0ef0a1c35189a6e8377d8ee8310ea5ef22c5f3 ]

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.

Fixes:73d5fe0462702 ("spi: cadence-quadspi: Remove spi_master_put() in probe failure path")

Signed-off-by: Zhang Qilong <zhangqilong3@...wei.com>
Link: https://lore.kernel.org/r/20220924121310.78331-2-zhangqilong3@huawei.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/spi/spi-cadence-quadspi.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-cadence-quadspi.c b/drivers/spi/spi-cadence-quadspi.c
index e12ab5b43f34..447230547945 100644
--- a/drivers/spi/spi-cadence-quadspi.c
+++ b/drivers/spi/spi-cadence-quadspi.c
@@ -1645,7 +1645,7 @@ static int cqspi_probe(struct platform_device *pdev)
 	pm_runtime_enable(dev);
 	ret = pm_runtime_resume_and_get(dev);
 	if (ret < 0)
-		return ret;
+		goto probe_pm_failed;
 
 	ret = clk_prepare_enable(cqspi->clk);
 	if (ret) {
@@ -1740,6 +1740,7 @@ static int cqspi_probe(struct platform_device *pdev)
 	clk_disable_unprepare(cqspi->clk);
 probe_clk_failed:
 	pm_runtime_put_sync(dev);
+probe_pm_failed:
 	pm_runtime_disable(dev);
 	return ret;
 }
-- 
2.35.1