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| author | Kay Sievers <kay.sievers@suse.de> | 2006-06-15 15:31:56 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-06-21 21:40:49 +0200 |
| commit | b9d9c82b4d081feb464f62dfc786c8621d09ecd2 (patch) | |
| tree | 511d15b4d7aaba80a2c0fe49622a3224ca386122 /drivers/base/bus.c | |
| parent | [PATCH] Driver core: allow struct device to have a dev_t (diff) | |
| download | linux-b9d9c82b4d081feb464f62dfc786c8621d09ecd2.tar.xz linux-b9d9c82b4d081feb464f62dfc786c8621d09ecd2.zip | |
[PATCH] Driver core: add generic "subsystem" link to all devices
Like the SUBSYTEM= key we find in the environment of the uevent, this
creates a generic "subsystem" link in sysfs for every device. Userspace
usually doesn't care at all if its a "class" or a "bus" device. This
provides an unified way to determine the subsytem of a device, regardless
of the way the driver core has created it.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/base/bus.c')
| -rw-r--r-- | drivers/base/bus.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/base/bus.c b/drivers/base/bus.c index 64ba9011d1a8..050d86d0b872 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -374,6 +374,7 @@ int bus_add_device(struct device * dev) error = device_add_attrs(bus, dev); if (!error) { sysfs_create_link(&bus->devices.kobj, &dev->kobj, dev->bus_id); + sysfs_create_link(&dev->kobj, &dev->bus->subsys.kset.kobj, "subsystem"); sysfs_create_link(&dev->kobj, &dev->bus->subsys.kset.kobj, "bus"); } } @@ -408,6 +409,7 @@ void bus_attach_device(struct device * dev) void bus_remove_device(struct device * dev) { if (dev->bus) { + sysfs_remove_link(&dev->kobj, "subsystem"); sysfs_remove_link(&dev->kobj, "bus"); sysfs_remove_link(&dev->bus->devices.kobj, dev->bus_id); device_remove_attrs(dev->bus, dev); |