提交 d9a01573 编写于 作者: G Greg Kroah-Hartman

class: rename "sem" to "class_sem" in internal class structure

This renames the struct class "sem" field to be "class_sem" to make
things easier when struct bus_type and struct class merge in the future.
It also makes grepping for fields easier as well.

Based on an idea from Kay.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
上级 1fbfee6c
......@@ -45,7 +45,7 @@ struct driver_private {
* @class_devices - list of devices associated with this class
* @class_interfaces - list of class_interfaces associated with this class
* @class_dirs -
* @sem - semaphore to protect the children, devices, and interfaces lists.
* @class_sem - semaphore to protect the children, devices, and interfaces lists.
* @class - pointer back to the struct class that this structure is associated
* with.
*
......@@ -58,7 +58,7 @@ struct class_private {
struct list_head class_devices;
struct list_head class_interfaces;
struct kset class_dirs;
struct semaphore sem;
struct semaphore class_sem;
struct class *class;
};
#define to_class(obj) \
......
......@@ -147,7 +147,7 @@ int class_register(struct class *cls)
INIT_LIST_HEAD(&cp->class_devices);
INIT_LIST_HEAD(&cp->class_interfaces);
kset_init(&cp->class_dirs);
init_MUTEX(&cp->sem);
init_MUTEX(&cp->class_sem);
error = kobject_set_name(&cp->class_subsys.kobj, "%s", cls->name);
if (error) {
kfree(cp);
......@@ -278,7 +278,7 @@ char *make_class_name(const char *name, struct kobject *kobj)
* We check the return of @fn each time. If it returns anything
* other than 0, we break out and return that value.
*
* Note, we hold class->sem in this function, so it can not be
* Note, we hold class->class_sem in this function, so it can not be
* re-acquired in @fn, otherwise it will self-deadlocking. For
* example, calls to add or remove class members would be verboten.
*/
......@@ -290,7 +290,7 @@ int class_for_each_device(struct class *class, struct device *start,
if (!class)
return -EINVAL;
down(&class->p->sem);
down(&class->p->class_sem);
list_for_each_entry(dev, &class->p->class_devices, node) {
if (start) {
if (start == dev)
......@@ -303,7 +303,7 @@ int class_for_each_device(struct class *class, struct device *start,
if (error)
break;
}
up(&class->p->sem);
up(&class->p->class_sem);
return error;
}
......@@ -326,7 +326,7 @@ EXPORT_SYMBOL_GPL(class_for_each_device);
*
* Note, you will need to drop the reference with put_device() after use.
*
* We hold class->sem in this function, so it can not be
* We hold class->class_sem in this function, so it can not be
* re-acquired in @match, otherwise it will self-deadlocking. For
* example, calls to add or remove class members would be verboten.
*/
......@@ -340,7 +340,7 @@ struct device *class_find_device(struct class *class, struct device *start,
if (!class)
return NULL;
down(&class->p->sem);
down(&class->p->class_sem);
list_for_each_entry(dev, &class->p->class_devices, node) {
if (start) {
if (start == dev)
......@@ -354,7 +354,7 @@ struct device *class_find_device(struct class *class, struct device *start,
} else
put_device(dev);
}
up(&class->p->sem);
up(&class->p->class_sem);
return found ? dev : NULL;
}
......@@ -372,13 +372,13 @@ int class_interface_register(struct class_interface *class_intf)
if (!parent)
return -EINVAL;
down(&parent->p->sem);
down(&parent->p->class_sem);
list_add_tail(&class_intf->node, &parent->p->class_interfaces);
if (class_intf->add_dev) {
list_for_each_entry(dev, &parent->p->class_devices, node)
class_intf->add_dev(dev, class_intf);
}
up(&parent->p->sem);
up(&parent->p->class_sem);
return 0;
}
......@@ -391,13 +391,13 @@ void class_interface_unregister(struct class_interface *class_intf)
if (!parent)
return;
down(&parent->p->sem);
down(&parent->p->class_sem);
list_del_init(&class_intf->node);
if (class_intf->remove_dev) {
list_for_each_entry(dev, &parent->p->class_devices, node)
class_intf->remove_dev(dev, class_intf);
}
up(&parent->p->sem);
up(&parent->p->class_sem);
class_put(parent);
}
......
......@@ -907,7 +907,7 @@ int device_add(struct device *dev)
klist_add_tail(&dev->knode_parent, &parent->klist_children);
if (dev->class) {
down(&dev->class->p->sem);
down(&dev->class->p->class_sem);
/* tie the class to the device */
list_add_tail(&dev->node, &dev->class->p->class_devices);
......@@ -916,7 +916,7 @@ int device_add(struct device *dev)
&dev->class->p->class_interfaces, node)
if (class_intf->add_dev)
class_intf->add_dev(dev, class_intf);
up(&dev->class->p->sem);
up(&dev->class->p->class_sem);
}
Done:
put_device(dev);
......@@ -1017,7 +1017,7 @@ void device_del(struct device *dev)
if (dev->class) {
device_remove_class_symlinks(dev);
down(&dev->class->p->sem);
down(&dev->class->p->class_sem);
/* notify any interfaces that the device is now gone */
list_for_each_entry(class_intf,
&dev->class->p->class_interfaces, node)
......@@ -1025,7 +1025,7 @@ void device_del(struct device *dev)
class_intf->remove_dev(dev, class_intf);
/* remove the device from the class list */
list_del_init(&dev->node);
up(&dev->class->p->sem);
up(&dev->class->p->class_sem);
}
device_remove_file(dev, &uevent_attr);
device_remove_attrs(dev);
......
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