2 * module.c - module sysfs fun for drivers
4 * This file is released under the GPLv2
7 #include <linux/device.h>
8 #include <linux/module.h>
9 #include <linux/errno.h>
10 #include <linux/slab.h>
11 #include <linux/string.h>
14 static char *make_driver_name(struct device_driver
*drv
)
18 driver_name
= kasprintf(GFP_KERNEL
, "%s:%s", drv
->bus
->name
, drv
->name
);
25 static void module_create_drivers_dir(struct module_kobject
*mk
)
27 if (!mk
|| mk
->drivers_dir
)
30 mk
->drivers_dir
= kobject_create_and_add("drivers", &mk
->kobj
);
33 void module_add_driver(struct module
*mod
, struct device_driver
*drv
)
37 struct module_kobject
*mk
= NULL
;
44 else if (drv
->mod_name
) {
45 struct kobject
*mkobj
;
47 /* Lookup built-in module entry in /sys/modules */
48 mkobj
= kset_find_obj(module_kset
, drv
->mod_name
);
50 mk
= container_of(mkobj
, struct module_kobject
, kobj
);
51 /* remember our module structure */
53 /* kset_find_obj took a reference */
61 /* Don't check return codes; these calls are idempotent */
62 no_warn
= sysfs_create_link(&drv
->p
->kobj
, &mk
->kobj
, "module");
63 driver_name
= make_driver_name(drv
);
65 module_create_drivers_dir(mk
);
66 no_warn
= sysfs_create_link(mk
->drivers_dir
, &drv
->p
->kobj
,
72 void module_remove_driver(struct device_driver
*drv
)
74 struct module_kobject
*mk
= NULL
;
80 sysfs_remove_link(&drv
->p
->kobj
, "module");
83 mk
= &drv
->owner
->mkobj
;
84 else if (drv
->p
->mkobj
)
86 if (mk
&& mk
->drivers_dir
) {
87 driver_name
= make_driver_name(drv
);
89 sysfs_remove_link(mk
->drivers_dir
, driver_name
);
This page took 0.031676 seconds and 5 git commands to generate.