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authorDave Young <hidave.darkstar@gmail.com>2008-01-22 15:27:08 +0800
committerGreg Kroah-Hartman <gregkh@suse.de>2008-01-24 20:40:44 -0800
commitfd04897bb20be29d60f7e426a053545aebeaa61a (patch)
tree7cd86b2d9de79a70bdeb32997240af5e28be6d03 /include/linux/device.h
parent63b6971a0876b744e2fcf3c9df15d130501e1deb (diff)
downloadop-kernel-dev-fd04897bb20be29d60f7e426a053545aebeaa61a.zip
op-kernel-dev-fd04897bb20be29d60f7e426a053545aebeaa61a.tar.gz
Driver Core: add class iteration api
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>
Diffstat (limited to 'include/linux/device.h')
-rw-r--r--include/linux/device.h9
1 files changed, 7 insertions, 2 deletions
diff --git a/include/linux/device.h b/include/linux/device.h
index 92ba3a8..cdaf57b 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -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 {
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