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Modules: only add drivers/ direcory if needed

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This changes the module core to only create the drivers/ directory if we
are going to put something in it.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Greg Kroah-Hartman 2007-01-15 11:50:02 -08:00
parent f30c53a873
commit fe480a2675
2 changed files with 11 additions and 10 deletions
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20
kernel/module.c
View file

@ -1131,12 +1131,6 @@ static int mod_sysfs_setup(struct module *mod,
if (err)
goto out;
mod->mkobj.drivers_dir = kobject_add_dir(&mod->mkobj.kobj, "drivers");
if (!mod->mkobj.drivers_dir) {
err = -ENOMEM;
goto out_unreg;
}
err = module_param_sysfs_setup(mod, kparam, num_params);
if (err)
goto out_unreg_drivers;
@ -1151,8 +1145,6 @@ static int mod_sysfs_setup(struct module *mod,
out_unreg_param:
module_param_sysfs_remove(mod);
out_unreg_drivers:
kobject_unregister(mod->mkobj.drivers_dir);
out_unreg:
kobject_del(&mod->mkobj.kobj);
kobject_put(&mod->mkobj.kobj);
out:
@ -1163,7 +1155,8 @@ static void mod_kobject_remove(struct module *mod)
{
module_remove_modinfo_attrs(mod);
module_param_sysfs_remove(mod);
kobject_unregister(mod->mkobj.drivers_dir);
if (mod->mkobj.drivers_dir)
kobject_unregister(mod->mkobj.drivers_dir);
kobject_unregister(&mod->mkobj.kobj);
}
@ -2340,6 +2333,14 @@ static char *make_driver_name(struct device_driver *drv)
return driver_name;
}
static void module_create_drivers_dir(struct module_kobject *mk)
{
if (!mk || mk->drivers_dir)
return;
mk->drivers_dir = kobject_add_dir(&mk->kobj, "drivers");
}
void module_add_driver(struct module *mod, struct device_driver *drv)
{
char *driver_name;
@ -2367,6 +2368,7 @@ void module_add_driver(struct module *mod, struct device_driver *drv)
no_warn = sysfs_create_link(&drv->kobj, &mk->kobj, "module");
driver_name = make_driver_name(drv);
if (driver_name) {
module_create_drivers_dir(mk);
no_warn = sysfs_create_link(mk->drivers_dir, &drv->kobj,
driver_name);
kfree(driver_name);

1
kernel/params.c
View file

@ -565,7 +565,6 @@ static void __init kernel_param_sysfs_setup(const char *name,
ret = kobject_add(&mk->kobj);
BUG_ON(ret < 0);
param_sysfs_setup(mk, kparam, num_params, name_skip);
mk->drivers_dir = kobject_add_dir(&mk->kobj, "drivers");
kobject_uevent(&mk->kobj, KOBJ_ADD);
}