xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

class: move driver core specific parts to a private structure

Browse Source 
This moves the portions of struct class that are dynamic (kobject and
lock and lists) out of the main structure and into a dynamic, private,
structure.


Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Greg Kroah-Hartman
2008-01-22 18:17:41 -05:00
parent 16be63fd16
commit 7c71448b8a
4 changed files with 107 additions and 71 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
drivers/base/base.h
View File

@@ -36,6 +36,33 @@ struct driver_private {
};
#define to_driver(obj) container_of(obj, struct driver_private, kobj)
/**
* struct class_private - structure to hold the private to the driver core portions of the class structure.
*
* @subsys - the struct kset that defines this class. This is the main kobject
* @children - list of class_devices associated with this class
* @devices - list of devices associated with this class
* @interfaces - list of class_interfaces associated with this class
* @class_dirs -
* @sem - semaphore to protect the children, devices, and interfaces lists.
* @class - pointer back to the struct class that this structure is associated
* with.
*
* This structure is the one that is the actual kobject allowing struct
* class to be statically allocated safely. Nothing outside of the driver
* core should ever touch these fields.
*/
struct class_private {
struct kset subsys;
struct list_head devices;
struct list_head interfaces;
struct kset class_dirs;
struct semaphore sem;
struct class *class;
};
#define to_class(obj) container_of(obj, struct class_private, subsys.kobj)
/* initialisation functions */
extern int devices_init(void);
extern int buses_init(void);