diff options
Diffstat (limited to 'drivers/base/sys.c')
| -rw-r--r-- | drivers/base/sys.c | 64 |
1 files changed, 59 insertions, 5 deletions
diff --git a/drivers/base/sys.c b/drivers/base/sys.c index 358bb0be3c08..40fc14f03540 100644 --- a/drivers/base/sys.c +++ b/drivers/base/sys.c @@ -36,7 +36,7 @@ sysdev_show(struct kobject * kobj, struct attribute * attr, char * buffer) struct sysdev_attribute * sysdev_attr = to_sysdev_attr(attr); if (sysdev_attr->show) - return sysdev_attr->show(sysdev, buffer); + return sysdev_attr->show(sysdev, sysdev_attr, buffer); return -EIO; } @@ -49,7 +49,7 @@ sysdev_store(struct kobject * kobj, struct attribute * attr, struct sysdev_attribute * sysdev_attr = to_sysdev_attr(attr); if (sysdev_attr->store) - return sysdev_attr->store(sysdev, buffer, count); + return sysdev_attr->store(sysdev, sysdev_attr, buffer, count); return -EIO; } @@ -130,8 +130,8 @@ static struct kset *system_kset; int sysdev_class_register(struct sysdev_class * cls) { - pr_debug("Registering sysdev class '%s'\n", - kobject_name(&cls->kset.kobj)); + pr_debug("Registering sysdev class '%s'\n", cls->name); + INIT_LIST_HEAD(&cls->drivers); memset(&cls->kset.kobj, 0x00, sizeof(struct kobject)); cls->kset.kobj.parent = &system_kset->kobj; @@ -241,7 +241,8 @@ int sysdev_register(struct sys_device * sysdev) if (!cls) return -EINVAL; - pr_debug("Registering sys device '%s'\n", kobject_name(&sysdev->kobj)); + pr_debug("Registering sys device of class '%s'\n", + kobject_name(&cls->kset.kobj)); /* initialize the kobject to 0, in case it had previously been used */ memset(&sysdev->kobj, 0x00, sizeof(struct kobject)); @@ -257,6 +258,9 @@ int sysdev_register(struct sys_device * sysdev) if (!error) { struct sysdev_driver * drv; + pr_debug("Registering sys device '%s'\n", + kobject_name(&sysdev->kobj)); + mutex_lock(&sysdev_drivers_lock); /* Generic notification is implicit, because it's that * code that should have called us. @@ -269,6 +273,7 @@ int sysdev_register(struct sys_device * sysdev) } mutex_unlock(&sysdev_drivers_lock); } + kobject_uevent(&sysdev->kobj, KOBJ_ADD); return error; } @@ -474,3 +479,52 @@ int __init system_bus_init(void) EXPORT_SYMBOL_GPL(sysdev_register); EXPORT_SYMBOL_GPL(sysdev_unregister); + +#define to_ext_attr(x) container_of(x, struct sysdev_ext_attribute, attr) + +ssize_t sysdev_store_ulong(struct sys_device *sysdev, + struct sysdev_attribute *attr, + const char *buf, size_t size) +{ + struct sysdev_ext_attribute *ea = to_ext_attr(attr); + char *end; + unsigned long new = simple_strtoul(buf, &end, 0); + if (end == buf) + return -EINVAL; + *(unsigned long *)(ea->var) = new; + return end - buf; +} +EXPORT_SYMBOL_GPL(sysdev_store_ulong); + +ssize_t sysdev_show_ulong(struct sys_device *sysdev, + struct sysdev_attribute *attr, + char *buf) +{ + struct sysdev_ext_attribute *ea = to_ext_attr(attr); + return snprintf(buf, PAGE_SIZE, "%lx\n", *(unsigned long *)(ea->var)); +} +EXPORT_SYMBOL_GPL(sysdev_show_ulong); + +ssize_t sysdev_store_int(struct sys_device *sysdev, + struct sysdev_attribute *attr, + const char *buf, size_t size) +{ + struct sysdev_ext_attribute *ea = to_ext_attr(attr); + char *end; + long new = simple_strtol(buf, &end, 0); + if (end == buf || new > INT_MAX || new < INT_MIN) + return -EINVAL; + *(int *)(ea->var) = new; + return end - buf; +} +EXPORT_SYMBOL_GPL(sysdev_store_int); + +ssize_t sysdev_show_int(struct sys_device *sysdev, + struct sysdev_attribute *attr, + char *buf) +{ + struct sysdev_ext_attribute *ea = to_ext_attr(attr); + return snprintf(buf, PAGE_SIZE, "%d\n", *(int *)(ea->var)); +} +EXPORT_SYMBOL_GPL(sysdev_show_int); + |