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Driver Core: add class iteration api

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Add the following class iteration functions for driver use:
	class_for_each_device
	class_find_device
	class_for_each_child
	class_find_child

Signed-off-by: Dave Young <hidave.darkstar@gmail.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Dave Young
2008-01-22 15:27:08 +08:00
committed by Greg Kroah-Hartman
parent 63b6971a08
commit fd04897bb2
2 changed files with 140 additions and 2 deletions
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9
include/linux/device.h
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@@ -177,8 +177,7 @@ struct class {
struct list_head devices;
struct list_head interfaces;
struct kset class_dirs;
struct semaphore sem; /* locks both the children and interfaces lists */
struct semaphore sem; /* locks children, devices, interfaces */
struct class_attribute * class_attrs;
struct class_device_attribute * class_dev_attrs;
struct device_attribute * dev_attrs;
@@ -196,6 +195,12 @@ struct class {
extern int __must_check class_register(struct class *);
extern void class_unregister(struct class *);
extern int class_for_each_device(struct class *class, void *data,
int (*fn)(struct device *dev, void *data));
extern struct device *class_find_device(struct class *class, void *data,
int (*match)(struct device *, void *));
extern struct class_device *class_find_child(struct class *class, void *data,
int (*match)(struct class_device *, void *));
struct class_attribute {