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Commit f30c53a8 authored by Kay Sievers's avatar Kay Sievers Committed by Greg Kroah-Hartman
Browse files

MODULES: add the module name for built in kernel drivers 



Signed-off-by: default avatarKay Sievers <kay.sievers@vrfy.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent c744aeae

include/linux/device.h

+1 −0
Original line number Diff line number Diff line
@@ -126,6 +126,7 @@ struct device_driver { 
	struct klist_node	knode_bus;



	struct module		* owner;

	const char 		* mod_name;	/* used for built-in modules */



	int	(*probe)	(struct device * dev);

	int	(*remove)	(struct device * dev);

include/linux/module.h

+1 −1
Original line number Diff line number Diff line
@@ -58,6 +58,7 @@ struct module_kobject 
{

	struct kobject kobj;

	struct module *mod;

	struct kobject *drivers_dir;

};



/* These are either module local, or the kernel's dummy ones. */
@@ -263,7 +264,6 @@ struct module 
	struct module_attribute *modinfo_attrs;

	const char *version;

	const char *srcversion;

	struct kobject *drivers_dir;



	/* Exported symbols */

	const struct kernel_symbol *syms;

kernel/module.c

+24 −9
Original line number Diff line number Diff line
@@ -1131,8 +1131,8 @@ static int mod_sysfs_setup(struct module *mod, 
	if (err)

		goto out;



	mod->drivers_dir = kobject_add_dir(&mod->mkobj.kobj, "drivers");

	if (!mod->drivers_dir) {

	mod->mkobj.drivers_dir = kobject_add_dir(&mod->mkobj.kobj, "drivers");

	if (!mod->mkobj.drivers_dir) {

		err = -ENOMEM;

		goto out_unreg;

	}
@@ -1151,7 +1151,7 @@ static int mod_sysfs_setup(struct module *mod, 
out_unreg_param:

	module_param_sysfs_remove(mod);

out_unreg_drivers:

	kobject_unregister(mod->drivers_dir);

	kobject_unregister(mod->mkobj.drivers_dir);

out_unreg:

	kobject_del(&mod->mkobj.kobj);

	kobject_put(&mod->mkobj.kobj);
@@ -1163,7 +1163,7 @@ static void mod_kobject_remove(struct module *mod) 
{

	module_remove_modinfo_attrs(mod);

	module_param_sysfs_remove(mod);

	kobject_unregister(mod->drivers_dir);

	kobject_unregister(mod->mkobj.drivers_dir);



	kobject_unregister(&mod->mkobj.kobj);

}
@@ -2344,15 +2344,30 @@ void module_add_driver(struct module *mod, struct device_driver *drv) 
{

	char *driver_name;

	int no_warn;

	struct module_kobject *mk = NULL;



	if (!mod || !drv)

	if (!drv)

		return;



	if (mod)

		mk = &mod->mkobj;

	else if (drv->mod_name) {

		struct kobject *mkobj;



		/* Lookup built-in module entry in /sys/modules */

		mkobj = kset_find_obj(&module_subsys.kset, drv->mod_name);

		if (mkobj)

			mk = container_of(mkobj, struct module_kobject, kobj);

	}



	if (!mk)

		return;



	/* Don't check return codes; these calls are idempotent */

	no_warn = sysfs_create_link(&drv->kobj, &mod->mkobj.kobj, "module");

	no_warn = sysfs_create_link(&drv->kobj, &mk->kobj, "module");

	driver_name = make_driver_name(drv);

	if (driver_name) {

		no_warn = sysfs_create_link(mod->drivers_dir, &drv->kobj,

		no_warn = sysfs_create_link(mk->drivers_dir, &drv->kobj,

					    driver_name);

		kfree(driver_name);

	}
@@ -2367,10 +2382,10 @@ void module_remove_driver(struct device_driver *drv) 
		return;



	sysfs_remove_link(&drv->kobj, "module");

	if (drv->owner && drv->owner->drivers_dir) {

	if (drv->owner && drv->owner->mkobj.drivers_dir) {

		driver_name = make_driver_name(drv);

		if (driver_name) {

			sysfs_remove_link(drv->owner->drivers_dir,

			sysfs_remove_link(drv->owner->mkobj.drivers_dir,

					  driver_name);

			kfree(driver_name);

		}

kernel/params.c

+5 −7
Original line number Diff line number Diff line
@@ -561,14 +561,12 @@ static void __init kernel_param_sysfs_setup(const char *name, 
	mk->mod = THIS_MODULE;

	kobj_set_kset_s(mk, module_subsys);

	kobject_set_name(&mk->kobj, name);

	ret = kobject_register(&mk->kobj);

	kobject_init(&mk->kobj);

	ret = kobject_add(&mk->kobj);

	BUG_ON(ret < 0);



	/* no need to keep the kobject if no parameter is exported */

	if (!param_sysfs_setup(mk, kparam, num_params, name_skip)) {

		kobject_unregister(&mk->kobj);

		kfree(mk);

	}

	param_sysfs_setup(mk, kparam, num_params, name_skip);

	mk->drivers_dir = kobject_add_dir(&mk->kobj, "drivers");

	kobject_uevent(&mk->kobj, KOBJ_ADD);

}



/*