diff options
author | Shaohua Li <shaohua.li@intel.com> | 2006-05-08 05:45:57 (GMT) |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-06-21 19:40:48 (GMT) |
commit | 670dd90d81f60ef429cbba54ad235e9207f4d444 (patch) | |
tree | 817c62329690f69cb32439d00c25023dfe977402 /drivers/base | |
parent | 1740757e8f94c6899705eb6f5434de9404992778 (diff) | |
download | linux-670dd90d81f60ef429cbba54ad235e9207f4d444.tar.xz |
[PATCH] Driver Core: Allow sysdev_class have attributes
allow sysdev_class adding attribute. Next patch will use the new API to
add an attribute under /sys/device/system/cpu/.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/base')
-rw-r--r-- | drivers/base/sys.c | 51 |
1 files changed, 50 insertions, 1 deletions
diff --git a/drivers/base/sys.c b/drivers/base/sys.c index 6fc23ab..6858178 100644 --- a/drivers/base/sys.c +++ b/drivers/base/sys.c @@ -80,10 +80,59 @@ void sysdev_remove_file(struct sys_device * s, struct sysdev_attribute * a) EXPORT_SYMBOL_GPL(sysdev_create_file); EXPORT_SYMBOL_GPL(sysdev_remove_file); +#define to_sysdev_class(k) container_of(k, struct sysdev_class, kset.kobj) +#define to_sysdev_class_attr(a) container_of(a, \ + struct sysdev_class_attribute, attr) + +static ssize_t sysdev_class_show(struct kobject *kobj, struct attribute *attr, + char *buffer) +{ + struct sysdev_class * class = to_sysdev_class(kobj); + struct sysdev_class_attribute *class_attr = to_sysdev_class_attr(attr); + + if (class_attr->show) + return class_attr->show(class, buffer); + return -EIO; +} + +static ssize_t sysdev_class_store(struct kobject *kobj, struct attribute *attr, + const char *buffer, size_t count) +{ + struct sysdev_class * class = to_sysdev_class(kobj); + struct sysdev_class_attribute * class_attr = to_sysdev_class_attr(attr); + + if (class_attr->store) + return class_attr->store(class, buffer, count); + return -EIO; +} + +static struct sysfs_ops sysfs_class_ops = { + .show = sysdev_class_show, + .store = sysdev_class_store, +}; + +static struct kobj_type ktype_sysdev_class = { + .sysfs_ops = &sysfs_class_ops, +}; + +int sysdev_class_create_file(struct sysdev_class *c, + struct sysdev_class_attribute *a) +{ + return sysfs_create_file(&c->kset.kobj, &a->attr); +} +EXPORT_SYMBOL_GPL(sysdev_class_create_file); + +void sysdev_class_remove_file(struct sysdev_class *c, + struct sysdev_class_attribute *a) +{ + sysfs_remove_file(&c->kset.kobj, &a->attr); +} +EXPORT_SYMBOL_GPL(sysdev_class_remove_file); + /* * declare system_subsys */ -static decl_subsys(system, &ktype_sysdev, NULL); +static decl_subsys(system, &ktype_sysdev_class, NULL); int sysdev_class_register(struct sysdev_class * cls) { |