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Subject[PATCH 01/14] Regulators: virtual - use sysfs attribute groups
Date
Instead of open-coding sysfs attribute group use canned solution.
Also add __devinit/__devexit markups for probe and remove methods
and use 'bool' where it makes sense.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
---

drivers/regulator/virtual.c | 64 ++++++++++++++++++++++---------------------
1 files changed, 33 insertions(+), 31 deletions(-)

diff --git a/drivers/regulator/virtual.c b/drivers/regulator/virtual.c
index addc032..d96ceca 100644
--- a/drivers/regulator/virtual.c
+++ b/drivers/regulator/virtual.c
@@ -19,7 +19,7 @@
struct virtual_consumer_data {
struct mutex lock;
struct regulator *regulator;
- int enabled;
+ bool enabled;
int min_uV;
int max_uV;
int min_uA;
@@ -49,7 +49,7 @@ static void update_voltage_constraints(struct device *dev,
dev_dbg(dev, "Enabling regulator\n");
ret = regulator_enable(data->regulator);
if (ret == 0)
- data->enabled = 1;
+ data->enabled = true;
else
dev_err(dev, "regulator_enable() failed: %d\n",
ret);
@@ -59,7 +59,7 @@ static void update_voltage_constraints(struct device *dev,
dev_dbg(dev, "Disabling regulator\n");
ret = regulator_disable(data->regulator);
if (ret == 0)
- data->enabled = 0;
+ data->enabled = false;
else
dev_err(dev, "regulator_disable() failed: %d\n",
ret);
@@ -89,7 +89,7 @@ static void update_current_limit_constraints(struct device *dev,
dev_dbg(dev, "Enabling regulator\n");
ret = regulator_enable(data->regulator);
if (ret == 0)
- data->enabled = 1;
+ data->enabled = true;
else
dev_err(dev, "regulator_enable() failed: %d\n",
ret);
@@ -99,7 +99,7 @@ static void update_current_limit_constraints(struct device *dev,
dev_dbg(dev, "Disabling regulator\n");
ret = regulator_disable(data->regulator);
if (ret == 0)
- data->enabled = 0;
+ data->enabled = false;
else
dev_err(dev, "regulator_disable() failed: %d\n",
ret);
@@ -270,24 +270,28 @@ static DEVICE_ATTR(min_microamps, 0666, show_min_uA, set_min_uA);
static DEVICE_ATTR(max_microamps, 0666, show_max_uA, set_max_uA);
static DEVICE_ATTR(mode, 0666, show_mode, set_mode);

-static struct device_attribute *attributes[] = {
- &dev_attr_min_microvolts,
- &dev_attr_max_microvolts,
- &dev_attr_min_microamps,
- &dev_attr_max_microamps,
- &dev_attr_mode,
+static struct attribute *regulator_virtual_attributes[] = {
+ &dev_attr_min_microvolts.attr,
+ &dev_attr_max_microvolts.attr,
+ &dev_attr_min_microamps.attr,
+ &dev_attr_max_microamps.attr,
+ &dev_attr_mode.attr,
+ NULL
};

-static int regulator_virtual_consumer_probe(struct platform_device *pdev)
+static const struct attribute_group regulator_virtual_attr_group = {
+ .attrs = regulator_virtual_attributes,
+};
+
+static int __devinit regulator_virtual_probe(struct platform_device *pdev)
{
char *reg_id = pdev->dev.platform_data;
struct virtual_consumer_data *drvdata;
- int ret, i;
+ int ret;

drvdata = kzalloc(sizeof(struct virtual_consumer_data), GFP_KERNEL);
- if (drvdata == NULL) {
+ if (drvdata == NULL)
return -ENOMEM;
- }

mutex_init(&drvdata->lock);

@@ -299,13 +303,12 @@ static int regulator_virtual_consumer_probe(struct platform_device *pdev)
goto err;
}

- for (i = 0; i < ARRAY_SIZE(attributes); i++) {
- ret = device_create_file(&pdev->dev, attributes[i]);
- if (ret != 0) {
- dev_err(&pdev->dev, "Failed to create attr %d: %d\n",
- i, ret);
- goto err_regulator;
- }
+ ret = sysfs_create_group(&pdev->dev.kobj,
+ &regulator_virtual_attr_group);
+ if (ret != 0) {
+ dev_err(&pdev->dev,
+ "Failed to create attribute group: %d\n", ret);
+ goto err_regulator;
}

drvdata->mode = regulator_get_mode(drvdata->regulator);
@@ -317,37 +320,36 @@ static int regulator_virtual_consumer_probe(struct platform_device *pdev)
err_regulator:
regulator_put(drvdata->regulator);
err:
- for (i = 0; i < ARRAY_SIZE(attributes); i++)
- device_remove_file(&pdev->dev, attributes[i]);
kfree(drvdata);
return ret;
}

-static int regulator_virtual_consumer_remove(struct platform_device *pdev)
+static int __devexit regulator_virtual_remove(struct platform_device *pdev)
{
struct virtual_consumer_data *drvdata = platform_get_drvdata(pdev);
- int i;

- for (i = 0; i < ARRAY_SIZE(attributes); i++)
- device_remove_file(&pdev->dev, attributes[i]);
+ sysfs_remove_group(&pdev->dev.kobj, &regulator_virtual_attr_group);
+
if (drvdata->enabled)
regulator_disable(drvdata->regulator);
regulator_put(drvdata->regulator);

kfree(drvdata);

+ platform_set_drvdata(pdev, NULL);
+
return 0;
}

static struct platform_driver regulator_virtual_consumer_driver = {
- .probe = regulator_virtual_consumer_probe,
- .remove = regulator_virtual_consumer_remove,
+ .probe = regulator_virtual_probe,
+ .remove = __devexit_p(regulator_virtual_remove),
.driver = {
.name = "reg-virt-consumer",
+ .owner = THIS_MODULE,
},
};

-
static int __init regulator_virtual_consumer_init(void)
{
return platform_driver_register(&regulator_virtual_consumer_driver);


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