From 4cf95663c829ddd47c76ba5b749e88864beef0a7 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Tue, 23 Feb 2010 23:37:44 -0800 Subject: [PATCH] Regulators: virtual - use sysfs attribute groups 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 Acked-by: Mark Brown Signed-off-by: Liam Girdwood --- drivers/regulator/virtual.c | 64 +++++++++++++++++++------------------ 1 file changed, 33 insertions(+), 31 deletions(-) diff --git a/drivers/regulator/virtual.c b/drivers/regulator/virtual.c index addc032c84bf..d96cecaac73d 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, + ®ulator_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, ®ulator_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(®ulator_virtual_consumer_driver); -- 2.20.1