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Diffstat (limited to 'drivers/base/module.c')
-rw-r--r--drivers/base/module.c42
1 files changed, 31 insertions, 11 deletions
diff --git a/drivers/base/module.c b/drivers/base/module.c
index 46ad4d6367..a1b55da071 100644
--- a/drivers/base/module.c
+++ b/drivers/base/module.c
@@ -30,14 +30,14 @@ static void module_create_drivers_dir(struct module_kobject *mk)
mutex_unlock(&drivers_dir_mutex);
}
-void module_add_driver(struct module *mod, struct device_driver *drv)
+int module_add_driver(struct module *mod, struct device_driver *drv)
{
char *driver_name;
- int no_warn;
struct module_kobject *mk = NULL;
+ int ret;
if (!drv)
- return;
+ return 0;
if (mod)
mk = &mod->mkobj;
@@ -56,17 +56,37 @@ void module_add_driver(struct module *mod, struct device_driver *drv)
}
if (!mk)
- return;
+ return 0;
+
+ ret = sysfs_create_link(&drv->p->kobj, &mk->kobj, "module");
+ if (ret)
+ return ret;
- /* Don't check return codes; these calls are idempotent */
- no_warn = sysfs_create_link(&drv->p->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->p->kobj,
- driver_name);
- kfree(driver_name);
+ if (!driver_name) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ module_create_drivers_dir(mk);
+ if (!mk->drivers_dir) {
+ ret = -EINVAL;
+ goto out;
}
+
+ ret = sysfs_create_link(mk->drivers_dir, &drv->p->kobj, driver_name);
+ if (ret)
+ goto out;
+
+ kfree(driver_name);
+
+ return 0;
+out:
+ sysfs_remove_link(&drv->p->kobj, "module");
+ sysfs_remove_link(mk->drivers_dir, driver_name);
+ kfree(driver_name);
+
+ return ret;
}
void module_remove_driver(struct device_driver *drv)