axxia_i2c_probe() does not disable clock in case of failure
in i2c_add_adapter(). Also it ignores returned value from
clk_prepare_enable().
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@xxxxxxxxx>
---
drivers/i2c/busses/i2c-axxia.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/i2c-axxia.c b/drivers/i2c/busses/i2c-axxia.c
index c335cc7852f9..5c05b3050393 100644
--- a/drivers/i2c/busses/i2c-axxia.c
+++ b/drivers/i2c/busses/i2c-axxia.c
@@ -545,7 +545,11 @@ static int axxia_i2c_probe(struct platform_device *pdev)
return ret;
}
- clk_prepare_enable(idev->i2c_clk);
+ ret = clk_prepare_enable(idev->i2c_clk);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to enable clock\n");
+ return ret;
+ }
i2c_set_adapdata(&idev->adapter, idev);
strlcpy(idev->adapter.name, pdev->name, sizeof(idev->adapter.name));
@@ -561,6 +565,7 @@ static int axxia_i2c_probe(struct platform_device *pdev)
ret = i2c_add_adapter(&idev->adapter);
if (ret) {
dev_err(&pdev->dev, "failed to add adapter\n");
+ clk_disable_unprepare(idev->i2c_clk);
return ret;
}
--
2.7.4
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