linux-kernel - [PATCH 5.4 123/453] spi: sprd: fix reference leak in sprd_spi

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Message-Id: <20201228124943.135215333@linuxfoundation.org>
Date:   Mon, 28 Dec 2020 13:45:59 +0100
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>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 123/453] spi: sprd: fix reference leak in sprd_spi_remove

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

[ Upstream commit e4062765bc2a41e025e29dd56bad798505036427 ]

pm_runtime_get_sync will increment pm usage counter even it
failed. Forgetting to pm_runtime_put_noidle will result in
reference leak in sprd_spi_remove, so we should fix it.

Fixes: e7d973a31c24b ("spi: sprd: Add SPI driver for Spreadtrum SC9860")
Signed-off-by: Zhang Qilong <zhangqilong3@...wei.com>
Acked-by: Chunyan Zhang <zhang.lyra@...il.com>
Link: https://lore.kernel.org/r/20201106015035.139574-1-zhangqilong3@huawei.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/spi/spi-sprd.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/spi/spi-sprd.c b/drivers/spi/spi-sprd.c
index e60aff9903951..c2bdf19ccdd26 100644
--- a/drivers/spi/spi-sprd.c
+++ b/drivers/spi/spi-sprd.c
@@ -1008,6 +1008,7 @@ static int sprd_spi_remove(struct platform_device *pdev)
 
 	ret = pm_runtime_get_sync(ss->dev);
 	if (ret < 0) {
+		pm_runtime_put_noidle(ss->dev);
 		dev_err(ss->dev, "failed to resume SPI controller\n");
 		return ret;
 	}
-- 
2.27.0