From 2dc4f2819aec1cdd3012cb28396a625d2efb00fd Mon Sep 17 00:00:00 2001 From: Cesar Eduardo Barros Date: Mon, 4 Aug 2008 08:34:50 +0100 Subject: [PATCH] device model: Allow the creation of symlinks on /sys/bus/*/devices Allows the direct creation of symlinks on /sys/bus/*/devices. This is needed for a compat symlink from gta01-pm-gps.0 to neo1973-pm-gps.0 on the Openmoko Neo1973 GTA01. Signed-off-by: Cesar Eduardo Barros --- drivers/base/bus.c | 23 +++++++++++++++++++++++ include/linux/device.h | 5 +++++ 2 files changed, 28 insertions(+), 0 deletions(-) diff --git a/drivers/base/bus.c b/drivers/base/bus.c index ef522ae..96d495d 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -141,6 +141,29 @@ void bus_remove_file(struct bus_type *bus, struct bus_attribute *attr) } EXPORT_SYMBOL_GPL(bus_remove_file); +int bus_create_device_link(struct bus_type *bus, struct kobject *target, + const char *name) +{ + int error; + if (bus_get(bus)) { + error = sysfs_create_link(&bus->p->devices_kset->kobj, target, + name); + bus_put(bus); + } else + error = -EINVAL; + return error; +} +EXPORT_SYMBOL_GPL(bus_create_device_link); + +void bus_remove_device_link(struct bus_type *bus, const char *name) +{ + if (bus_get(bus)) { + sysfs_remove_link(&bus->p->devices_kset->kobj, name); + bus_put(bus); + } +} +EXPORT_SYMBOL_GPL(bus_remove_device_link); + static struct kobj_type bus_ktype = { .sysfs_ops = &bus_sysfs_ops, }; diff --git a/include/linux/device.h b/include/linux/device.h index 6a2d04c..d29b005 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -51,6 +51,11 @@ extern int __must_check bus_create_file(struct bus_type *, struct bus_attribute *); extern void bus_remove_file(struct bus_type *, struct bus_attribute *); +extern int __must_check bus_create_device_link(struct bus_type *bus, + struct kobject *target, + const char *name); +extern void bus_remove_device_link(struct bus_type *bus, const char *name); + struct bus_type { const char *name; struct bus_attribute *bus_attrs; -- 1.5.6.3