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authorKay Sievers <kay.sievers@vrfy.org>2006-11-24 12:15:25 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2006-12-01 23:52:02 +0100
commite17e0f51aeea4e59c7e450a1c0f26605b91c1260 (patch)
treeeb177cbfe18d433ab115222bfe53f1098de844c2
parentDocumentation/driver-model/platform.txt update/rewrite (diff)
downloadlinux-e17e0f51aeea4e59c7e450a1c0f26605b91c1260.tar.xz
linux-e17e0f51aeea4e59c7e450a1c0f26605b91c1260.zip
Driver core: show drivers in /sys/module/
Show the drivers, which belong to the module: $ ls -l /sys/module/usbcore/drivers/ hub -> ../../../bus/usb/drivers/hub usb -> ../../../bus/usb/drivers/usb usbfs -> ../../../bus/usb/drivers/usbfs Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--include/linux/module.h1
-rw-r--r--kernel/module.c31
2 files changed, 26 insertions, 6 deletions
diff --git a/include/linux/module.h b/include/linux/module.h
index d1d00ce8f4ed..9258ffd8a7f0 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -264,6 +264,7 @@ struct module
struct module_attribute *modinfo_attrs;
const char *version;
const char *srcversion;
+ struct kobject *drivers_dir;
/* Exported symbols */
const struct kernel_symbol *syms;
diff --git a/kernel/module.c b/kernel/module.c
index f0166563c602..45e01cb60101 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1086,22 +1086,35 @@ static int mod_sysfs_setup(struct module *mod,
goto out;
kobj_set_kset_s(&mod->mkobj, module_subsys);
mod->mkobj.mod = mod;
- err = kobject_register(&mod->mkobj.kobj);
+
+ /* delay uevent until full sysfs population */
+ kobject_init(&mod->mkobj.kobj);
+ err = kobject_add(&mod->mkobj.kobj);
if (err)
goto out;
+ mod->drivers_dir = kobject_add_dir(&mod->mkobj.kobj, "drivers");
+ if (!mod->drivers_dir)
+ goto out_unreg;
+
err = module_param_sysfs_setup(mod, kparam, num_params);
if (err)
- goto out_unreg;
+ goto out_unreg_drivers;
err = module_add_modinfo_attrs(mod);
if (err)
- goto out_unreg;
+ goto out_unreg_param;
+ kobject_uevent(&mod->mkobj.kobj, KOBJ_ADD);
return 0;
+out_unreg_drivers:
+ kobject_unregister(mod->drivers_dir);
+out_unreg_param:
+ module_param_sysfs_remove(mod);
out_unreg:
- kobject_unregister(&mod->mkobj.kobj);
+ kobject_del(&mod->mkobj.kobj);
+ kobject_put(&mod->mkobj.kobj);
out:
return err;
}
@@ -1110,6 +1123,7 @@ 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.kobj);
}
@@ -2275,11 +2289,14 @@ void print_modules(void)
void module_add_driver(struct module *mod, struct device_driver *drv)
{
+ int no_warn;
+
if (!mod || !drv)
return;
- /* Don't check return code; this call is idempotent */
- sysfs_create_link(&drv->kobj, &mod->mkobj.kobj, "module");
+ /* 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(mod->drivers_dir, &drv->kobj, drv->name);
}
EXPORT_SYMBOL(module_add_driver);
@@ -2288,6 +2305,8 @@ void module_remove_driver(struct device_driver *drv)
if (!drv)
return;
sysfs_remove_link(&drv->kobj, "module");
+ if (drv->owner && drv->owner->drivers_dir)
+ sysfs_remove_link(drv->owner->drivers_dir, drv->name);
}
EXPORT_SYMBOL(module_remove_driver);