linux-kernel - [PATCH 4.19 063/267] spi: pxa2xx: Fix runtime PM ref imbalance on probe error

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Message-Id: <20200619141651.902045265@linuxfoundation.org>
Date:   Fri, 19 Jun 2020 16:30:48 +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, Lukas Wunner <lukas@...ner.de>,
        Jarkko Nikula <jarkko.nikula@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 063/267] spi: pxa2xx: Fix runtime PM ref imbalance on probe error

From: Lukas Wunner <lukas@...ner.de>

[ Upstream commit 65e318e17358a3fd4fcb5a69d89b14016dee2f06 ]

The PXA2xx SPI driver releases a runtime PM ref in the probe error path
even though it hasn't acquired a ref earlier.

Apparently commit e2b714afee32 ("spi: pxa2xx: Disable runtime PM if
controller registration fails") sought to copy-paste the invocation of
pm_runtime_disable() from pxa2xx_spi_remove(), but erroneously copied
the call to pm_runtime_put_noidle() as well.  Drop it.

Fixes: e2b714afee32 ("spi: pxa2xx: Disable runtime PM if controller registration fails")
Signed-off-by: Lukas Wunner <lukas@...ner.de>
Reviewed-by: Jarkko Nikula <jarkko.nikula@...ux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: stable@...r.kernel.org # v4.17+
Cc: Jarkko Nikula <jarkko.nikula@...ux.intel.com>
Link: https://lore.kernel.org/r/58b2ac6942ca1f91aaeeafe512144bc5343e1d84.1590408496.git.lukas@wunner.de
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/spi/spi-pxa2xx.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index 6551188fea23..2525fd9c8aa4 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -1748,7 +1748,6 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
 	return status;
 
 out_error_pm_runtime_enabled:
-	pm_runtime_put_noidle(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
 
 out_error_clock_enabled:
-- 
2.25.1