openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

staging/iio: (iio_hwmon) Add support for sysfs name attribute 

The 'name' attribute is mandatory for hwmon devices.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Guenter Roeck 2013-01-31 21:42:00 +00:00 committed by Jonathan Cameron
parent c4ac7b98bd
commit 1daed9becd
1 changed files with 10 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/staging/iio/iio_hwmon.c
View File

@ -55,6 +55,14 @@ static ssize_t iio_hwmon_read_val(struct device *dev,
return sprintf(buf, "%d\n", result); return sprintf(buf, "%d\n", result);
} }
static ssize_t show_name(struct device *dev, struct device_attribute *attr,
char *buf)
{
return sprintf(buf, "iio_hwmon\n");
}
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
static int iio_hwmon_probe(struct platform_device *pdev) static int iio_hwmon_probe(struct platform_device *pdev)
{ {
struct device *dev = &pdev->dev; struct device *dev = &pdev->dev;
@ -77,7 +85,7 @@ static int iio_hwmon_probe(struct platform_device *pdev)
st->num_channels++; st->num_channels++;
st->attrs = devm_kzalloc(dev, st->attrs = devm_kzalloc(dev,
sizeof(*st->attrs) * (st->num_channels + 1), sizeof(*st->attrs) * (st->num_channels + 2),
GFP_KERNEL); GFP_KERNEL);
if (st->attrs == NULL) { if (st->attrs == NULL) {
ret = -ENOMEM; ret = -ENOMEM;
@ -125,7 +133,7 @@ static int iio_hwmon_probe(struct platform_device *pdev)
a->index = i; a->index = i;
st->attrs[i] = &a->dev_attr.attr; st->attrs[i] = &a->dev_attr.attr;
} }
st->attrs[st->num_channels] = &dev_attr_name.attr;
st->attr_group.attrs = st->attrs; st->attr_group.attrs = st->attrs;
platform_set_drvdata(pdev, st); platform_set_drvdata(pdev, st);
ret = sysfs_create_group(&dev->kobj, &st->attr_group); ret = sysfs_create_group(&dev->kobj, &st->attr_group);