From: Dmitry Osipenko <digetx@gmail.com>
Date: Wed, 30 Sep 2020 01:18:45 +0300
Subject: i2c: tegra: Add missing pm_runtime_put()

Git-commit: e4fc2efbc310cfb665eed558da42ac18084d20bc
Patch-mainline: v5.10-rc1
References: bsc#1184386

The pm_runtime_get_sync() always bumps refcount regardless of whether it
succeeds or fails. Hence driver is responsible for restoring of the RPM
refcounting. This patch adds missing RPM puts which restore refcounting
in a case of pm_runtime_get_sync() error.

Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Mian Yousaf Kaukab <ykaukab@suse.de>
---
 drivers/i2c/busses/i2c-tegra.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index ab88cdd70376..4e7d0eec0dd3 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -1375,6 +1375,7 @@ static int tegra_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[],
 	ret = pm_runtime_get_sync(i2c_dev->dev);
 	if (ret < 0) {
 		dev_err(i2c_dev->dev, "runtime resume failed %d\n", ret);
+		pm_runtime_put_noidle(i2c_dev->dev);
 		return ret;
 	}
 
@@ -1786,7 +1787,7 @@ static int tegra_i2c_probe(struct platform_device *pdev)
 		ret = pm_runtime_get_sync(i2c_dev->dev);
 		if (ret < 0) {
 			dev_err(&pdev->dev, "runtime resume failed\n");
-			goto disable_rpm;
+			goto put_rpm;
 		}
 	}
 
@@ -1851,7 +1852,6 @@ static int tegra_i2c_probe(struct platform_device *pdev)
 	else
 		tegra_i2c_runtime_suspend(&pdev->dev);
 
-disable_rpm:
 	if (pm_runtime_enabled(&pdev->dev))
 		pm_runtime_disable(&pdev->dev);
 
-- 
2.26.2