From: Guenter Roeck <linux@xxxxxxxxxxxx>
Use is_visible to determine if attributes should be generated or not.
This simplifies the code and reduces object size by about 120 bytes
on x86_64.
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
drivers/hwmon/it87.c | 81 +++++++++++++++++++++-------------------------------
1 file changed, 33 insertions(+), 48 deletions(-)
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index 0c13d640bcc7..e4fb466fd9c3 100644
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -471,6 +471,7 @@ struct it87_data {
unsigned long last_updated; /* In jiffies */
u16 in_scaled; /* Internal voltage sensors are scaled */
+ u16 in_internal; /* Bitfield, internal sensors (for labels) */
u16 has_in; /* Bitfield, voltage sensors enabled */
u8 in[10][3]; /* [nr][0]=in, [1]=min, [2]=max */
u8 has_fan; /* Bitfield, fans enabled */
@@ -480,6 +481,7 @@ struct it87_data {
u8 sensor; /* Register value (IT87_REG_TEMP_ENABLE) */
u8 extra; /* Register value (IT87_REG_TEMP_EXTRA) */
u8 fan_div[3]; /* Register encoding, shifted right */
+ bool has_vid; /* True if VID supported */
u8 vid; /* Register encoding, combined */
u8 vrm;
u32 alarms; /* Register encoding, combined */
@@ -1879,15 +1881,37 @@ static const struct attribute_group it87_group_temp = {
.is_visible = it87_temp_is_visible,
};
+static umode_t it87_is_visible(struct kobject *kobj,
+ struct attribute *attr, int index)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct it87_data *data = dev_get_drvdata(dev);
+
+ if ((index == 3 || index == 4) && !data->has_vid)
+ return 0;
+
+ if (index > 4 && !(data->in_internal & (1 << (index - 5))))
+ return 0;
+
+ return attr->mode;
+}
+
static struct attribute *it87_attributes[] = {
&dev_attr_alarms.attr,
&sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
&dev_attr_name.attr,
+ &dev_attr_vrm.attr, /* 3 */
+ &dev_attr_cpu0_vid.attr, /* 4 */
+ &sensor_dev_attr_in3_label.dev_attr.attr, /* 5 .. 8 */
+ &sensor_dev_attr_in7_label.dev_attr.attr,
+ &sensor_dev_attr_in8_label.dev_attr.attr,
+ &sensor_dev_attr_in9_label.dev_attr.attr,
NULL
};
static const struct attribute_group it87_group = {
.attrs = it87_attributes,
+ .is_visible = it87_is_visible,
};
static umode_t it87_fan_is_visible(struct kobject *kobj,
@@ -2074,28 +2098,6 @@ static const struct attribute_group it87_group_auto_pwm = {
.is_visible = it87_auto_pwm_is_visible,
};
-static struct attribute *it87_attributes_vid[] = {
- &dev_attr_vrm.attr,
- &dev_attr_cpu0_vid.attr,
- NULL
-};
-
-static const struct attribute_group it87_group_vid = {
- .attrs = it87_attributes_vid,
-};
-
-static struct attribute *it87_attributes_label[] = {
- &sensor_dev_attr_in3_label.dev_attr.attr,
- &sensor_dev_attr_in7_label.dev_attr.attr,
- &sensor_dev_attr_in8_label.dev_attr.attr,
- &sensor_dev_attr_in9_label.dev_attr.attr,
- NULL
-};
-
-static const struct attribute_group it87_group_label = {
- .attrs = it87_attributes_label,
-};
-
/* SuperIO detection - will change isa_address if a chip is found */
static int __init it87_find(int sioaddr, unsigned short *address,
struct it87_sio_data *sio_data)
@@ -2460,18 +2462,12 @@ exit:
static void it87_remove_files(struct device *dev)
{
- struct it87_sio_data *sio_data = dev_get_platdata(dev);
-
sysfs_remove_group(&dev->kobj, &it87_group);
sysfs_remove_group(&dev->kobj, &it87_group_in);
sysfs_remove_group(&dev->kobj, &it87_group_temp);
sysfs_remove_group(&dev->kobj, &it87_group_fan);
sysfs_remove_group(&dev->kobj, &it87_group_pwm);
sysfs_remove_group(&dev->kobj, &it87_group_auto_pwm);
-
- if (!sio_data->skip_vid)
- sysfs_remove_group(&dev->kobj, &it87_group_vid);
- sysfs_remove_group(&dev->kobj, &it87_group_label);
}
/* Called when we have found a new IT87. */
@@ -2649,8 +2645,8 @@ static int it87_probe(struct platform_device *pdev)
struct resource *res;
struct device *dev = &pdev->dev;
struct it87_sio_data *sio_data = dev_get_platdata(dev);
- int err = 0, i;
int enable_pwm_interface;
+ int err = 0;
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
@@ -2731,6 +2727,7 @@ static int it87_probe(struct platform_device *pdev)
data->has_temp &= ~(1 << 2);
}
+ data->in_internal = sio_data->internal;
data->has_in = 0x3ff & ~sio_data->skip_in;
data->has_beep = !!sio_data->beep_pin;
@@ -2738,6 +2735,13 @@ static int it87_probe(struct platform_device *pdev)
/* Initialize the IT87 chip */
it87_init_device(pdev);
+ if (!sio_data->skip_vid) {
+ data->has_vid = true;
+ data->vrm = vid_which_vrm();
+ /* VID reading from Super-I/O config space if available */
+ data->vid = sio_data->vid_value;
+ }
+
/* Register sysfs hooks */
err = sysfs_create_group(&dev->kobj, &it87_group);
if (err)
@@ -2770,25 +2774,6 @@ static int it87_probe(struct platform_device *pdev)
}
}
- if (!sio_data->skip_vid) {
- data->vrm = vid_which_vrm();
- /* VID reading from Super-I/O config space if available */
- data->vid = sio_data->vid_value;
- err = sysfs_create_group(&dev->kobj, &it87_group_vid);
- if (err)
- goto error;
- }
-
- /* Export labels for internal sensors */
- for (i = 0; i < 4; i++) {
- if (!(sio_data->internal & (1 << i)))
- continue;
- err = sysfs_create_file(&dev->kobj,
- it87_attributes_label[i]);
- if (err)
- goto error;
- }
-
data->hwmon_dev = hwmon_device_register(dev);
if (IS_ERR(data->hwmon_dev)) {
err = PTR_ERR(data->hwmon_dev);
--
2.1.4
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