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sysfs: Introducing binary attributes for struct class 

Added dev_bin_attrs to struct class similar to existing dev_attrs.

Signed-off-by: Stefan Achatz <erazor_de@users.sourceforge.net>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
hifive-unleashed-5.1
Stefan Achatz 2010-11-26 19:57:29 +00:00 committed by Jiri Kosina
parent a7153258b7
commit c97415a725
2 changed files with 40 additions and 2 deletions
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41
drivers/base/core.c
View File

@ -338,6 +338,35 @@ static void device_remove_attributes(struct device *dev,
device_remove_file(dev, &attrs[i]);
}
static int device_add_bin_attributes(struct device *dev,
struct bin_attribute *attrs)
{
int error = 0;
int i;
if (attrs) {
for (i = 0; attr_name(attrs[i]); i++) {
error = device_create_bin_file(dev, &attrs[i]);
if (error)
break;
}
if (error)
while (--i >= 0)
device_remove_bin_file(dev, &attrs[i]);
}
return error;
}
static void device_remove_bin_attributes(struct device *dev,
struct bin_attribute *attrs)
{
int i;
if (attrs)
for (i = 0; attr_name(attrs[i]); i++)
device_remove_bin_file(dev, &attrs[i]);
}
static int device_add_groups(struct device *dev,
const struct attribute_group **groups)
{
@ -378,12 +407,15 @@ static int device_add_attrs(struct device *dev)
error = device_add_attributes(dev, class->dev_attrs);
if (error)
return error;
error = device_add_bin_attributes(dev, class->dev_bin_attrs);
if (error)
goto err_remove_class_attrs;
}
if (type) {
error = device_add_groups(dev, type->groups);
if (error)
goto err_remove_class_attrs;
goto err_remove_class_bin_attrs;
}
error = device_add_groups(dev, dev->groups);
@ -395,6 +427,9 @@ static int device_add_attrs(struct device *dev)
err_remove_type_groups:
if (type)
device_remove_groups(dev, type->groups);
err_remove_class_bin_attrs:
if (class)
device_remove_bin_attributes(dev, class->dev_bin_attrs);
err_remove_class_attrs:
if (class)
device_remove_attributes(dev, class->dev_attrs);
@ -412,8 +447,10 @@ static void device_remove_attrs(struct device *dev)
if (type)
device_remove_groups(dev, type->groups);
if (class)
if (class) {
device_remove_attributes(dev, class->dev_attrs);
device_remove_bin_attributes(dev, class->dev_bin_attrs);
}
}

1
include/linux/device.h
View File

@ -197,6 +197,7 @@ struct class {
struct class_attribute *class_attrs;
struct device_attribute *dev_attrs;
struct bin_attribute *dev_bin_attrs;
struct kobject *dev_kobj;
int (*dev_uevent)(struct device *dev, struct kobj_uevent_env *env);