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From:   Navid Emamdoost <navid.emamdoost@gmail.com>
To:     Laxman Dewangan <ldewangan@nvidia.com>,
        Mark Brown <broonie@kernel.org>,
        Thierry Reding <thierry.reding@gmail.com>,
        Jonathan Hunter <jonathanh@nvidia.com>,
        linux-spi@vger.kernel.org, linux-tegra@vger.kernel.org,
        linux-kernel@vger.kernel.org
Cc:     emamd001@umn.edu, wu000273@umn.edu, kjlu@umn.edu, smccaman@umn.edu,
        Navid Emamdoost <navid.emamdoost@gmail.com>
Subject: [PATCH] spi: tegra20-slink: call pm_runtime_put if pm_runtime_get_sync fails
Date:   Tue,  2 Jun 2020 00:22:14 -0500
Message-Id: <20200602052214.70015-1-navid.emamdoost@gmail.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Call to pm_runtime_get_sync increments counter even in case of
failure leading to incorrect ref count.
Call pm_runtime_put if pm_runtime_get_sync fails.

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
---
 drivers/spi/spi-tegra20-slink.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/spi/spi-tegra20-slink.c b/drivers/spi/spi-tegra20-slink.c
index 7f4d932dade7..15361db00982 100644
--- a/drivers/spi/spi-tegra20-slink.c
+++ b/drivers/spi/spi-tegra20-slink.c
@@ -1118,6 +1118,7 @@ static int tegra_slink_probe(struct platform_device *pdev)
 	ret = pm_runtime_get_sync(&pdev->dev);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "pm runtime get failed, e = %d\n", ret);
+		pm_runtime_put(&pdev->dev);
 		goto exit_pm_disable;
 	}
 	tspi->def_command_reg  = SLINK_M_S;
-- 
2.17.1