[PATCH 156/196] sysfs: fix /sys/module/*/holders after sysfs logic change

Greg Kroah-Hartman
2008-01-25T08:27:19Z

From: Kay Sievers <kay.sievers@vrfy.org>

Sysfs symlinks now require fully registered kobjects as a target,
otherwise the call to create a symlink will fail. Here we register
the kobject before we request the symlink in the holders directory.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Cc: Tejun Heo <teheo@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
kernel/module.c | 15 +++++++--------
1 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/kernel/module.c b/kernel/module.c
index dc4d3f5..0ae8117 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1227,6 +1227,8 @@ int mod_sysfs_init(struct module *mod)

kobject_init(&mod->mkobj.kobj);

+ /* delay uevent until full sysfs population */
+ err = kobject_add(&mod->mkobj.kobj);
out:
return err;
}
@@ -1237,11 +1239,6 @@ int mod_sysfs_setup(struct module *mod,
{
int err;

- /* delay uevent until full sysfs population */
- err = kobject_add(&mod->mkobj.kobj);
- if (err)
- goto out;
-
mod->holders_dir = kobject_create_and_add("holders", &mod->mkobj.kobj);
if (!mod->holders_dir) {
err = -ENOMEM;
@@ -1266,7 +1263,6 @@ out_unreg_holders:
out_unreg:
kobject_del(&mod->mkobj.kobj);
kobject_put(&mod->mkobj.kobj);
-out:
return err;
}
#endif
@@ -1883,10 +1879,10 @@ static struct module *load_module(void __user *umod,
/* Now we've moved module, initialize linked lists, etc. */
module_unload_init(mod);

- /* Initialize kobject, so we can reference it. */
+ /* add kobject, so we can reference it. */
err = mod_sysfs_init(mod);
if (err)
- goto cleanup;
+ goto free_unload;

/* Set up license info based on the info section */
set_license(mod, get_modinfo(sechdrs, infoindex, "license"));
@@ -2056,6 +2052,9 @@ static struct module *load_module(void __user *umod,
arch_cleanup:
module_arch_cleanup(mod);
cleanup:
+ kobject_del(&mod->mkobj.kobj);
+ kobject_put(&mod->mkobj.kobj);
+ free_unload:
module_unload_free(mod);
module_free(mod, mod->module_init);
free_core:
--
1.5.3.8