From 78cebd0889c7b8b92f43e7667efc16636b858c34 Mon Sep 17 00:00:00 2001 From: Pawel Moll Date: Thu, 12 Jun 2014 15:14:33 +0100 Subject: [PATCH] hwmon: vexpress: Use devm helper for hwmon device registration Use devm_hwmon_device_register_with_groups instead of the old-style manual attributes and hwmon device registration. Also, unroll the attribute group macros for better code readability. Signed-off-by: Pawel Moll Signed-off-by: Guenter Roeck --- drivers/hwmon/vexpress.c | 82 ++++++++++++++-------------------------- 1 file changed, 28 insertions(+), 54 deletions(-) diff --git a/drivers/hwmon/vexpress.c b/drivers/hwmon/vexpress.c index 611f34c7333d..c53619086f33 100644 --- a/drivers/hwmon/vexpress.c +++ b/drivers/hwmon/vexpress.c @@ -27,17 +27,8 @@ struct vexpress_hwmon_data { struct device *hwmon_dev; struct regmap *reg; - const char *name; }; -static ssize_t vexpress_hwmon_name_show(struct device *dev, - struct device_attribute *dev_attr, char *buffer) -{ - struct vexpress_hwmon_data *data = dev_get_drvdata(dev); - - return sprintf(buffer, "%s\n", data->name); -} - static ssize_t vexpress_hwmon_label_show(struct device *dev, struct device_attribute *dev_attr, char *buffer) { @@ -95,16 +86,6 @@ static umode_t vexpress_hwmon_attr_is_visible(struct kobject *kobj, return attr->mode; } -static DEVICE_ATTR(name, S_IRUGO, vexpress_hwmon_name_show, NULL); - -#define VEXPRESS_HWMON_ATTRS(_name, _label_attr, _input_attr) \ -struct attribute *vexpress_hwmon_attrs_##_name[] = { \ - &dev_attr_name.attr, \ - &dev_attr_##_label_attr.attr, \ - &sensor_dev_attr_##_input_attr.dev_attr.attr, \ - NULL \ -} - struct vexpress_hwmon_type { const char *name; const struct attribute_group **attr_groups; @@ -114,7 +95,11 @@ struct vexpress_hwmon_type { static DEVICE_ATTR(in1_label, S_IRUGO, vexpress_hwmon_label_show, NULL); static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, vexpress_hwmon_u32_show, NULL, 1000); -static VEXPRESS_HWMON_ATTRS(volt, in1_label, in1_input); +static struct attribute *vexpress_hwmon_attrs_volt[] = { + &dev_attr_in1_label.attr, + &sensor_dev_attr_in1_input.dev_attr.attr, + NULL +}; static struct attribute_group vexpress_hwmon_group_volt = { .is_visible = vexpress_hwmon_attr_is_visible, .attrs = vexpress_hwmon_attrs_volt, @@ -131,7 +116,11 @@ static struct vexpress_hwmon_type vexpress_hwmon_volt = { static DEVICE_ATTR(curr1_label, S_IRUGO, vexpress_hwmon_label_show, NULL); static SENSOR_DEVICE_ATTR(curr1_input, S_IRUGO, vexpress_hwmon_u32_show, NULL, 1000); -static VEXPRESS_HWMON_ATTRS(amp, curr1_label, curr1_input); +static struct attribute *vexpress_hwmon_attrs_amp[] = { + &dev_attr_curr1_label.attr, + &sensor_dev_attr_curr1_input.dev_attr.attr, + NULL +}; static struct attribute_group vexpress_hwmon_group_amp = { .is_visible = vexpress_hwmon_attr_is_visible, .attrs = vexpress_hwmon_attrs_amp, @@ -147,7 +136,11 @@ static struct vexpress_hwmon_type vexpress_hwmon_amp = { static DEVICE_ATTR(temp1_label, S_IRUGO, vexpress_hwmon_label_show, NULL); static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, vexpress_hwmon_u32_show, NULL, 1000); -static VEXPRESS_HWMON_ATTRS(temp, temp1_label, temp1_input); +static struct attribute *vexpress_hwmon_attrs_temp[] = { + &dev_attr_temp1_label.attr, + &sensor_dev_attr_temp1_input.dev_attr.attr, + NULL +}; static struct attribute_group vexpress_hwmon_group_temp = { .is_visible = vexpress_hwmon_attr_is_visible, .attrs = vexpress_hwmon_attrs_temp, @@ -163,7 +156,11 @@ static struct vexpress_hwmon_type vexpress_hwmon_temp = { static DEVICE_ATTR(power1_label, S_IRUGO, vexpress_hwmon_label_show, NULL); static SENSOR_DEVICE_ATTR(power1_input, S_IRUGO, vexpress_hwmon_u32_show, NULL, 1); -static VEXPRESS_HWMON_ATTRS(power, power1_label, power1_input); +static struct attribute *vexpress_hwmon_attrs_power[] = { + &dev_attr_power1_label.attr, + &sensor_dev_attr_power1_input.dev_attr.attr, + NULL +}; static struct attribute_group vexpress_hwmon_group_power = { .is_visible = vexpress_hwmon_attr_is_visible, .attrs = vexpress_hwmon_attrs_power, @@ -179,7 +176,11 @@ static struct vexpress_hwmon_type vexpress_hwmon_power = { static DEVICE_ATTR(energy1_label, S_IRUGO, vexpress_hwmon_label_show, NULL); static SENSOR_DEVICE_ATTR(energy1_input, S_IRUGO, vexpress_hwmon_u64_show, NULL, 1); -static VEXPRESS_HWMON_ATTRS(energy, energy1_label, energy1_input); +static struct attribute *vexpress_hwmon_attrs_energy[] = { + &dev_attr_energy1_label.attr, + &sensor_dev_attr_energy1_input.dev_attr.attr, + NULL +}; static struct attribute_group vexpress_hwmon_group_energy = { .is_visible = vexpress_hwmon_attr_is_visible, .attrs = vexpress_hwmon_attrs_energy, @@ -218,7 +219,6 @@ MODULE_DEVICE_TABLE(of, vexpress_hwmon_of_match); static int vexpress_hwmon_probe(struct platform_device *pdev) { - int err; const struct of_device_id *match; struct vexpress_hwmon_data *data; const struct vexpress_hwmon_type *type; @@ -232,45 +232,19 @@ static int vexpress_hwmon_probe(struct platform_device *pdev) if (!match) return -ENODEV; type = match->data; - data->name = type->name; data->reg = devm_regmap_init_vexpress_config(&pdev->dev); if (IS_ERR(data->reg)) return PTR_ERR(data->reg); - err = sysfs_create_groups(&pdev->dev.kobj, type->attr_groups); - if (err) - goto error; - - data->hwmon_dev = hwmon_device_register(&pdev->dev); - if (IS_ERR(data->hwmon_dev)) { - err = PTR_ERR(data->hwmon_dev); - goto error; - } - - return 0; - -error: - sysfs_remove_group(&pdev->dev.kobj, match->data); - return err; -} - -static int vexpress_hwmon_remove(struct platform_device *pdev) -{ - struct vexpress_hwmon_data *data = platform_get_drvdata(pdev); - const struct of_device_id *match; - - hwmon_device_unregister(data->hwmon_dev); - - match = of_match_device(vexpress_hwmon_of_match, &pdev->dev); - sysfs_remove_group(&pdev->dev.kobj, match->data); + data->hwmon_dev = devm_hwmon_device_register_with_groups(&pdev->dev, + type->name, data, type->attr_groups); - return 0; + return PTR_ERR_OR_ZERO(data->hwmon_dev); } static struct platform_driver vexpress_hwmon_driver = { .probe = vexpress_hwmon_probe, - .remove = vexpress_hwmon_remove, .driver = { .name = DRVNAME, .owner = THIS_MODULE, -- 2.20.1