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Subject[PATCH 47/79] class: rename "sem" to "class_sem" in internal class structure
Date
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: Greg Kroah-Hartman <gregkh@suse.de>
---
drivers/base/base.h | 4 ++--
drivers/base/class.c | 22 +++++++++++-----------
drivers/base/core.c | 8 ++++----
3 files changed, 17 insertions(+), 17 deletions(-)
diff --git a/drivers/base/base.h b/drivers/base/base.h
index a77d4bd..4435732 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -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) \
diff --git a/drivers/base/class.c b/drivers/base/class.c
index 86778b8..d24d211 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -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);
}
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 6e1cff2..b90ae6f 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -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);
--
1.5.6.3


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