From 864062457a2e444227bd368ca5f2a2b740de604f Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Wed, 14 Mar 2007 03:25:56 +0100 Subject: driver core: fix namespace issue with devices assigned to classes - uses a kset in "struct class" to keep track of all directories belonging to this class - merges with the /sys/devices/virtual logic. - removes the namespace-dir if the last member of that class leaves the directory. There may be locking or refcounting fixes left, I stopped when it seemed to work with network and sound modules. :) From: Kay Sievers Signed-off-by: Greg Kroah-Hartman --- lib/kobject.c | 12 ++++++++++-- lib/kobject_uevent.c | 16 ++++++++++------ 2 files changed, 20 insertions(+), 8 deletions(-) (limited to 'lib') diff --git a/lib/kobject.c b/lib/kobject.c index 057921c5945..f6645515560 100644 --- a/lib/kobject.c +++ b/lib/kobject.c @@ -488,13 +488,15 @@ static struct kobj_type dir_ktype = { }; /** - * kobject_add_dir - add sub directory of object. + * kobject__kset_add_dir - add sub directory of object. + * @kset: kset the directory is belongs to. * @parent: object in which a directory is created. * @name: directory name. * * Add a plain directory object as child of given object. */ -struct kobject *kobject_add_dir(struct kobject *parent, const char *name) +struct kobject *kobject_kset_add_dir(struct kset *kset, + struct kobject *parent, const char *name) { struct kobject *k; int ret; @@ -506,6 +508,7 @@ struct kobject *kobject_add_dir(struct kobject *parent, const char *name) if (!k) return NULL; + k->kset = kset; k->parent = parent; k->ktype = &dir_ktype; kobject_set_name(k, name); @@ -520,6 +523,11 @@ struct kobject *kobject_add_dir(struct kobject *parent, const char *name) return k; } +struct kobject *kobject_add_dir(struct kobject *parent, const char *name) +{ + return kobject_kset_add_dir(NULL, parent, name); +} + /** * kset_init - initialize a kset for use * @k: kset diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c index 82fc1794b69..4122f38330d 100644 --- a/lib/kobject_uevent.c +++ b/lib/kobject_uevent.c @@ -115,6 +115,16 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, return 0; } + /* originating subsystem */ + if (uevent_ops && uevent_ops->name) + subsystem = uevent_ops->name(kset, kobj); + else + subsystem = kobject_name(&kset->kobj); + if (!subsystem) { + pr_debug("unset subsytem caused the event to drop!\n"); + return 0; + } + /* environment index */ envp = kzalloc(NUM_ENVP * sizeof (char *), GFP_KERNEL); if (!envp) @@ -134,12 +144,6 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, goto exit; } - /* originating subsystem */ - if (uevent_ops && uevent_ops->name) - subsystem = uevent_ops->name(kset, kobj); - else - subsystem = kobject_name(&kset->kobj); - /* event environemnt for helper process only */ envp[i++] = "HOME=/"; envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin"; -- cgit v1.2.3