From b9d9c82b4d081feb464f62dfc786c8621d09ecd2 Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Thu, 15 Jun 2006 15:31:56 +0200 Subject: [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 Signed-off-by: Greg Kroah-Hartman --- fs/partitions/check.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'fs') diff --git a/fs/partitions/check.c b/fs/partitions/check.c index 7ef1f094de91..8851b81e7c5a 100644 --- a/fs/partitions/check.c +++ b/fs/partitions/check.c @@ -329,6 +329,7 @@ void delete_partition(struct gendisk *disk, int part) p->ios[0] = p->ios[1] = 0; p->sectors[0] = p->sectors[1] = 0; devfs_remove("%s/part%d", disk->devfs_name, part); + sysfs_remove_link(&p->kobj, "subsystem"); if (p->holder_dir) kobject_unregister(p->holder_dir); kobject_uevent(&p->kobj, KOBJ_REMOVE); @@ -363,6 +364,7 @@ void add_partition(struct gendisk *disk, int part, sector_t start, sector_t len) kobject_add(&p->kobj); if (!disk->part_uevent_suppress) kobject_uevent(&p->kobj, KOBJ_ADD); + sysfs_create_link(&p->kobj, &block_subsys.kset.kobj, "subsystem"); partition_sysfs_add_subdir(p); disk->part[part-1] = p; } @@ -398,6 +400,7 @@ static void disk_sysfs_symlinks(struct gendisk *disk) kfree(disk_name); } } + sysfs_create_link(&disk->kobj, &block_subsys.kset.kobj, "subsystem"); } /* Not exported, helper to add_disk(). */ @@ -548,5 +551,6 @@ void del_gendisk(struct gendisk *disk) put_device(disk->driverfs_dev); disk->driverfs_dev = NULL; } + sysfs_remove_link(&disk->kobj, "subsystem"); kobject_del(&disk->kobj); } -- cgit v1.2.3-59-g8ed1b