Commit 824ead03 authored by Krzysztof Kozlowski's avatar Krzysztof Kozlowski Committed by Eduardo Valentin

thermal: exynos: Fix unbalanced regulator disable on probe failure

During probe if the regulator could not be enabled, the error exit path
would still disable it. This could lead to unbalanced counter of
regulator enable/disable.

The patch moves code for getting and enabling the regulator from
exynos_map_dt_data() to probe function because it is really not a part
of getting Device Tree properties.
Acked-by: default avatarLukasz Majewski <l.majewski@samsung.com>
Tested-by: default avatarLukasz Majewski <l.majewski@samsung.com>
Reviewed-by: default avatarAlim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: default avatarKrzysztof Kozlowski <k.kozlowski@samsung.com>
Fixes: 5f09a5cb ("thermal: exynos: Disable the regulator on probe failure")
Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarEduardo Valentin <edubezval@gmail.com>
parent ce5ee161
...@@ -1168,27 +1168,10 @@ static int exynos_map_dt_data(struct platform_device *pdev) ...@@ -1168,27 +1168,10 @@ static int exynos_map_dt_data(struct platform_device *pdev)
struct exynos_tmu_data *data = platform_get_drvdata(pdev); struct exynos_tmu_data *data = platform_get_drvdata(pdev);
struct exynos_tmu_platform_data *pdata; struct exynos_tmu_platform_data *pdata;
struct resource res; struct resource res;
int ret;
if (!data || !pdev->dev.of_node) if (!data || !pdev->dev.of_node)
return -ENODEV; return -ENODEV;
/*
* Try enabling the regulator if found
* TODO: Add regulator as an SOC feature, so that regulator enable
* is a compulsory call.
*/
data->regulator = devm_regulator_get(&pdev->dev, "vtmu");
if (!IS_ERR(data->regulator)) {
ret = regulator_enable(data->regulator);
if (ret) {
dev_err(&pdev->dev, "failed to enable vtmu\n");
return ret;
}
} else {
dev_info(&pdev->dev, "Regulator node (vtmu) not found\n");
}
data->id = of_alias_get_id(pdev->dev.of_node, "tmuctrl"); data->id = of_alias_get_id(pdev->dev.of_node, "tmuctrl");
if (data->id < 0) if (data->id < 0)
data->id = 0; data->id = 0;
...@@ -1312,6 +1295,23 @@ static int exynos_tmu_probe(struct platform_device *pdev) ...@@ -1312,6 +1295,23 @@ static int exynos_tmu_probe(struct platform_device *pdev)
pr_err("thermal: tz: %p ERROR\n", data->tzd); pr_err("thermal: tz: %p ERROR\n", data->tzd);
return PTR_ERR(data->tzd); return PTR_ERR(data->tzd);
} }
/*
* Try enabling the regulator if found
* TODO: Add regulator as an SOC feature, so that regulator enable
* is a compulsory call.
*/
data->regulator = devm_regulator_get(&pdev->dev, "vtmu");
if (!IS_ERR(data->regulator)) {
ret = regulator_enable(data->regulator);
if (ret) {
dev_err(&pdev->dev, "failed to enable vtmu\n");
return ret;
}
} else {
dev_info(&pdev->dev, "Regulator node (vtmu) not found\n");
}
ret = exynos_map_dt_data(pdev); ret = exynos_map_dt_data(pdev);
if (ret) if (ret)
goto err_sensor; goto err_sensor;
......
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