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tc1100-wmi - switch to using attribute group

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Sysfs attribute group takes care of proper creation of a set of attributes
and implements proper error unwinding so the driver does not have to do it.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Dmitry Torokhov 2009-12-04 00:36:09 -08:00 committed by Len Brown
parent 22763c5cf3
commit 0ad3dc3af8
1 changed files with 11 additions and 28 deletions
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39
drivers/platform/x86/tc1100-wmi.c
View file

@ -183,30 +183,15 @@ static DEVICE_ATTR(value, S_IWUGO | S_IRUGO | S_IWUSR, \
show_set_bool(wireless, TC1100_INSTANCE_WIRELESS);
show_set_bool(jogdial, TC1100_INSTANCE_JOGDIAL);
static void remove_fs(void)
{
device_remove_file(&tc1100_device->dev, &dev_attr_wireless);
device_remove_file(&tc1100_device->dev, &dev_attr_jogdial);
}
static struct attribute *tc1100_attributes[] = {
&dev_attr_wireless.attr,
&dev_attr_jogdial.attr,
NULL
};
static int add_fs(void)
{
int ret;
ret = device_create_file(&tc1100_device->dev, &dev_attr_wireless);
if (ret)
goto add_sysfs_error;
ret = device_create_file(&tc1100_device->dev, &dev_attr_jogdial);
if (ret)
goto add_sysfs_error;
return ret;
add_sysfs_error:
remove_fs();
return ret;
}
static struct attribute_group tc1100_attribute_group = {
.attrs = tc1100_attributes,
};
/* --------------------------------------------------------------------------
Driver Model
@ -214,16 +199,14 @@ add_sysfs_error:
static int tc1100_probe(struct platform_device *device)
{
int result = 0;
result = add_fs();
return result;
return sysfs_create_group(&device->dev.kobj, &tc1100_attribute_group);
}
static int tc1100_remove(struct platform_device *device)
{
remove_fs();
sysfs_remove_group(&device->dev.kobj, &tc1100_attribute_group);
return 0;
}