[PATCH] regulator: gpio: Fix some error handling paths in 'gpio_regulator_probe()'
Re-order error handling code and gotos to avoid leaks in error handling
paths.
Fixes: 9f946099fe19 ("regulator: gpio: fix parsing of gpio list")
Signed-off-by: Christophe JAILLET
---
drivers/regulator/gpio-regulator.c | 16 +++-
1 file changed, 7 insertions(+), 9 deletions(-)
diff --git a/drivers/regulator/gpio-regulator.c
b/drivers/regulator/gpio-regulator.c
index 0fce06acfaec..a2eb50719c7b 100644
--- a/drivers/regulator/gpio-regulator.c
+++ b/drivers/regulator/gpio-regulator.c
@@ -271,8 +271,7 @@ static int gpio_regulator_probe(struct platform_device
*pdev)
drvdata->desc.name = kstrdup(config->supply_name, GFP_KERNEL);
if (drvdata->desc.name == NULL) {
dev_err(>dev, "Failed to allocate supply name\n");
- ret = -ENOMEM;
- goto err;
+ return -ENOMEM;
}
if (config->nr_gpios != 0) {
@@ -292,7 +291,7 @@ static int gpio_regulator_probe(struct platform_device
*pdev)
dev_err(>dev,
"Could not obtain regulator setting
GPIOs: %d\n",
ret);
- goto err_memstate;
+ goto err_memgpio;
}
}
@@ -303,7 +302,7 @@ static int gpio_regulator_probe(struct platform_device
*pdev)
if (drvdata->states == NULL) {
dev_err(>dev, "Failed to allocate state data\n");
ret = -ENOMEM;
- goto err_memgpio;
+ goto err_stategpio;
}
drvdata->nr_states = config->nr_states;
@@ -324,7 +323,7 @@ static int gpio_regulator_probe(struct platform_device
*pdev)
default:
dev_err(>dev, "No regulator type set\n");
ret = -EINVAL;
- goto err_memgpio;
+ goto err_memstate;
}
/* build initial state from gpio init data. */
@@ -361,22 +360,21 @@ static int gpio_regulator_probe(struct platform_device
*pdev)
if (IS_ERR(drvdata->dev)) {
ret = PTR_ERR(drvdata->dev);
dev_err(>dev, "Failed to register regulator: %d\n", ret);
- goto err_stategpio;
+ goto err_memstate;
}
platform_set_drvdata(pdev, drvdata);
return 0;
-err_stategpio:
- gpio_free_array(drvdata->gpios, drvdata->nr_gpios);
err_memstate:
kfree(drvdata->states);
+err_stategpio:
+ gpio_free_array(drvdata->gpios, drvdata->nr_gpios);
err_memgpio:
kfree(drvdata->gpios);
err_name:
kfree(drvdata->desc.name);
-err:
return ret;
}
--
2.14.1
[PATCH] regulator: gpio: Fix some error handling paths in 'gpio_regulator_probe()'
Re-order error handling code and gotos to avoid leaks in error handling
paths.
Fixes: 9f946099fe19 ("regulator: gpio: fix parsing of gpio list")
Signed-off-by: Christophe JAILLET
---
drivers/regulator/gpio-regulator.c | 16 +++-
1 file changed, 7 insertions(+), 9 deletions(-)
diff --git a/drivers/regulator/gpio-regulator.c
b/drivers/regulator/gpio-regulator.c
index 0fce06acfaec..a2eb50719c7b 100644
--- a/drivers/regulator/gpio-regulator.c
+++ b/drivers/regulator/gpio-regulator.c
@@ -271,8 +271,7 @@ static int gpio_regulator_probe(struct platform_device
*pdev)
drvdata->desc.name = kstrdup(config->supply_name, GFP_KERNEL);
if (drvdata->desc.name == NULL) {
dev_err(>dev, "Failed to allocate supply name\n");
- ret = -ENOMEM;
- goto err;
+ return -ENOMEM;
}
if (config->nr_gpios != 0) {
@@ -292,7 +291,7 @@ static int gpio_regulator_probe(struct platform_device
*pdev)
dev_err(>dev,
"Could not obtain regulator setting
GPIOs: %d\n",
ret);
- goto err_memstate;
+ goto err_memgpio;
}
}
@@ -303,7 +302,7 @@ static int gpio_regulator_probe(struct platform_device
*pdev)
if (drvdata->states == NULL) {
dev_err(>dev, "Failed to allocate state data\n");
ret = -ENOMEM;
- goto err_memgpio;
+ goto err_stategpio;
}
drvdata->nr_states = config->nr_states;
@@ -324,7 +323,7 @@ static int gpio_regulator_probe(struct platform_device
*pdev)
default:
dev_err(>dev, "No regulator type set\n");
ret = -EINVAL;
- goto err_memgpio;
+ goto err_memstate;
}
/* build initial state from gpio init data. */
@@ -361,22 +360,21 @@ static int gpio_regulator_probe(struct platform_device
*pdev)
if (IS_ERR(drvdata->dev)) {
ret = PTR_ERR(drvdata->dev);
dev_err(>dev, "Failed to register regulator: %d\n", ret);
- goto err_stategpio;
+ goto err_memstate;
}
platform_set_drvdata(pdev, drvdata);
return 0;
-err_stategpio:
- gpio_free_array(drvdata->gpios, drvdata->nr_gpios);
err_memstate:
kfree(drvdata->states);
+err_stategpio:
+ gpio_free_array(drvdata->gpios, drvdata->nr_gpios);
err_memgpio:
kfree(drvdata->gpios);
err_name:
kfree(drvdata->desc.name);
-err:
return ret;
}
--
2.14.1
