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