}
EXPORT_SYMBOL(dev_driver_string);
-#define to_dev(obj) container_of(obj, struct device, kobj)
#define to_dev_attr(_attr) container_of(_attr, struct device_attribute, attr)
static ssize_t dev_attr_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
struct device_attribute *dev_attr = to_dev_attr(attr);
- struct device *dev = to_dev(kobj);
+ struct device *dev = kobj_to_dev(kobj);
ssize_t ret = -EIO;
if (dev_attr->show)
const char *buf, size_t count)
{
struct device_attribute *dev_attr = to_dev_attr(attr);
- struct device *dev = to_dev(kobj);
+ struct device *dev = kobj_to_dev(kobj);
ssize_t ret = -EIO;
if (dev_attr->store)
*/
static void device_release(struct kobject *kobj)
{
- struct device *dev = to_dev(kobj);
+ struct device *dev = kobj_to_dev(kobj);
struct device_private *p = dev->p;
if (dev->release)
static const void *device_namespace(struct kobject *kobj)
{
- struct device *dev = to_dev(kobj);
+ struct device *dev = kobj_to_dev(kobj);
const void *ns = NULL;
if (dev->class && dev->class->ns_type)
struct kobj_type *ktype = get_ktype(kobj);
if (ktype == &device_ktype) {
- struct device *dev = to_dev(kobj);
+ struct device *dev = kobj_to_dev(kobj);
if (dev->bus)
return 1;
if (dev->class)
static const char *dev_uevent_name(struct kset *kset, struct kobject *kobj)
{
- struct device *dev = to_dev(kobj);
+ struct device *dev = kobj_to_dev(kobj);
if (dev->bus)
return dev->bus->name;
static int dev_uevent(struct kset *kset, struct kobject *kobj,
struct kobj_uevent_env *env)
{
- struct device *dev = to_dev(kobj);
+ struct device *dev = kobj_to_dev(kobj);
int retval = 0;
/* add device node properties if present */
*/
struct device *get_device(struct device *dev)
{
- return dev ? to_dev(kobject_get(&dev->kobj)) : NULL;
+ return dev ? kobj_to_dev(kobject_get(&dev->kobj)) : NULL;
}
/**
while (!list_empty(&devices_kset->list)) {
dev = list_entry(devices_kset->list.prev, struct device,
kobj.entry);
+
+ /*
+ * hold reference count of device's parent to
+ * prevent it from being freed because parent's
+ * lock is to be held
+ */
+ get_device(dev->parent);
get_device(dev);
/*
* Make sure the device is off the kset list, in the
list_del_init(&dev->kobj.entry);
spin_unlock(&devices_kset->list_lock);
+ /* hold lock to avoid race with probe/release */
+ if (dev->parent)
+ device_lock(dev->parent);
+ device_lock(dev);
+
/* Don't allow any more runtime suspends */
pm_runtime_get_noresume(dev);
pm_runtime_barrier(dev);
dev_dbg(dev, "shutdown\n");
dev->driver->shutdown(dev);
}
+
+ device_unlock(dev);
+ if (dev->parent)
+ device_unlock(dev->parent);
+
put_device(dev);
+ put_device(dev->parent);
spin_lock(&devices_kset->list_lock);
}