Re: [PATCH 10/10] hwmon: vexpress: Use devm helper for hwmon device registration
From: Guenter Roeck
Date: Mon Apr 28 2014 - 18:59:31 EST
On 04/28/2014 10:57 AM, Pawel Moll wrote:
Use devm_hwmon_device_register_with_groups instead of
the old-style manual attributes and hwmon device registration.
Also, unwind the attribute group macros for better code
readability.
Cc: Jean Delvare <jdelvare@xxxxxxx>
Cc: Guenter Roeck <linux@xxxxxxxxxxxx>
Cc: lm-sensors@xxxxxxxxxxxxxx
Signed-off-by: Pawel Moll <pawel.moll@xxxxxxx>
---
drivers/hwmon/vexpress.c | 91 ++++++++++++++++--------------------------------
1 file changed, 30 insertions(+), 61 deletions(-)
diff --git a/drivers/hwmon/vexpress.c b/drivers/hwmon/vexpress.c
index d853332..ed6bf0e 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;
@@ -114,10 +95,13 @@ 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_group vexpress_hwmon_group_volt = {
.is_visible = vexpress_hwmon_attr_is_visible,
- .attrs = vexpress_hwmon_attrs_volt,
+ .attrs = (struct attribute *[]) {
Is this typecast necessary ?
+ &dev_attr_in1_label.attr,
+ &sensor_dev_attr_in1_input.dev_attr.attr,
+ NULL
+ },
};
static struct vexpress_hwmon_type vexpress_hwmon_volt = {
.name = "vexpress_volt",
@@ -131,10 +115,13 @@ 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_group vexpress_hwmon_group_amp = {
.is_visible = vexpress_hwmon_attr_is_visible,
- .attrs = vexpress_hwmon_attrs_amp,
+ .attrs = (struct attribute *[]) {
+ &dev_attr_curr1_label.attr,
+ &sensor_dev_attr_curr1_input.dev_attr.attr,
+ NULL
+ },
};
static struct vexpress_hwmon_type vexpress_hwmon_amp = {
.name = "vexpress_amp",
@@ -147,10 +134,13 @@ 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_group vexpress_hwmon_group_temp = {
.is_visible = vexpress_hwmon_attr_is_visible,
- .attrs = vexpress_hwmon_attrs_temp,
+ .attrs = (struct attribute *[]) {
+ &dev_attr_temp1_label.attr,
+ &sensor_dev_attr_temp1_input.dev_attr.attr,
+ NULL
+ },
};
static struct vexpress_hwmon_type vexpress_hwmon_temp = {
.name = "vexpress_temp",
@@ -163,10 +153,13 @@ 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_group vexpress_hwmon_group_power = {
.is_visible = vexpress_hwmon_attr_is_visible,
- .attrs = vexpress_hwmon_attrs_power,
+ .attrs = (struct attribute *[]) {
+ &dev_attr_power1_label.attr,
+ &sensor_dev_attr_power1_input.dev_attr.attr,
+ NULL
+ },
};
static struct vexpress_hwmon_type vexpress_hwmon_power = {
.name = "vexpress_power",
@@ -179,10 +172,13 @@ 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_group vexpress_hwmon_group_energy = {
.is_visible = vexpress_hwmon_attr_is_visible,
- .attrs = vexpress_hwmon_attrs_energy,
+ .attrs = (struct attribute *[]) {
+ &dev_attr_energy1_label.attr,
+ &sensor_dev_attr_energy1_input.dev_attr.attr,
+ NULL
+ },
};
static struct vexpress_hwmon_type vexpress_hwmon_energy = {
.name = "vexpress_energy",
@@ -218,7 +214,6 @@ 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 +227,19 @@ 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 (!data->reg)
- return -ENODEV;
-
- 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;
- }
+ if (IS_ERR(data->reg))
+ return PTR_ERR(data->reg);
Did the API for devm_regmap_init_vexpress_config change ?
If so, it might make sense to separate this out into a separate patch,
together with the API change (it is a logically different change).
Otherwise looks good.
One question - I seem to be unable to apply the patch. What is your baseline branch / repository ?
Thanks,
Guenter
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