From: Sowjanya Komatineni <skomatineni@nvidia.com>
Date: Mon, 27 Jul 2020 13:57:21 -0700
Subject: i2c: tegra: Fix the error path in tegra_i2c_runtime_resume

Git-commit: 42aa38b54e35216351e52bb03382a38edc6f1bb8
Patch-mainline: v5.9-rc1
References: jsc#SLE-15847

tegra_i2c_runtime_resume does not disable prior enabled clocks
properly.

This patch fixes it.

Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
---
 drivers/i2c/busses/i2c-tegra.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index c91307b9e13d..7b93c454b4c7 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -665,18 +665,23 @@ static int __maybe_unused tegra_i2c_runtime_resume(struct device *dev)
 	ret = clk_enable(i2c_dev->slow_clk);
 	if (ret < 0) {
 		dev_err(dev, "failed to enable slow clock: %d\n", ret);
-		return ret;
+		goto disable_fast_clk;
 	}
 
 	ret = clk_enable(i2c_dev->div_clk);
 	if (ret < 0) {
 		dev_err(i2c_dev->dev,
 			"Enabling div clk failed, err %d\n", ret);
-		clk_disable(i2c_dev->fast_clk);
-		return ret;
+		goto disable_slow_clk;
 	}
 
 	return 0;
+
+disable_slow_clk:
+	clk_disable(i2c_dev->slow_clk);
+disable_fast_clk:
+	clk_disable(i2c_dev->fast_clk);
+	return ret;
 }
 
 static int __maybe_unused tegra_i2c_runtime_suspend(struct device *dev)
-- 
2.26.2