/*
* edac_device_register_sysfs_main_kobj
*
* perform the high level setup for the new edac_device instance
*
* Return: 0 SUCCESS
* !0 FAILURE
*/
int edac_device_register_sysfs_main_kobj(struct edac_device_ctl_info *edac_dev)
{
struct sysdev_class *edac_class;
int err;
debugf1("%s()\n", __func__);
/* get the /sys/devices/system/edac reference */
edac_class = edac_get_edac_class();
if (edac_class == NULL) {
debugf1("%s() no edac_class error\n", __func__);
err = -ENODEV;
goto err_out;
}
/* Point to the 'edac_class' this instance 'reports' to */
edac_dev->edac_class = edac_class;
/* Init the devices's kobject */
memset(&edac_dev->kobj, 0, sizeof(struct kobject));
/* Record which module 'owns' this control structure
* and bump the ref count of the module
*/
edac_dev->owner = THIS_MODULE;
if (!try_module_get(edac_dev->owner)) {
err = -ENODEV;
goto err_out;
}
/* register */
err = kobject_init_and_add(&edac_dev->kobj, &ktype_device_ctrl,
&edac_class->kset.kobj,
"%s", edac_dev->name);
if (err) {
debugf1("%s()Failed to register '.../edac/%s'\n",
__func__, edac_dev->name);
goto err_kobj_reg;
}
kobject_uevent(&edac_dev->kobj, KOBJ_ADD);
/* At this point, to 'free' the control struct,
* edac_device_unregister_sysfs_main_kobj() must be used
*/
debugf4("%s() Registered '.../edac/%s' kobject\n",
__func__, edac_dev->name);
return 0;
/* Error exit stack */
err_kobj_reg:
module_put(edac_dev->owner);
err_out:
return err;
}
/**
* edac_pci_main_kobj_setup()
*
* setup the sysfs for EDAC PCI attributes
* assumes edac_class has already been initialized
*/
static int edac_pci_main_kobj_setup(void)
{
int err;
struct sysdev_class *edac_class;
debugf0("%s()\n", __func__);
/* check and count if we have already created the main kobject */
if (atomic_inc_return(&edac_pci_sysfs_refcount) != 1)
return 0;
/* First time, so create the main kobject and its
* controls and atributes
*/
edac_class = edac_get_edac_class();
if (edac_class == NULL) {
debugf1("%s() no edac_class\n", __func__);
err = -ENODEV;
goto decrement_count_fail;
}
/* Bump the reference count on this module to ensure the
* modules isn't unloaded until we deconstruct the top
* level main kobj for EDAC PCI
*/
if (!try_module_get(THIS_MODULE)) {
debugf1("%s() try_module_get() failed\n", __func__);
err = -ENODEV;
goto decrement_count_fail;
}
edac_pci_top_main_kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL);
if (!edac_pci_top_main_kobj) {
debugf1("Failed to allocate\n");
err = -ENOMEM;
goto kzalloc_fail;
}
/* Instanstiate the pci object */
err = kobject_init_and_add(edac_pci_top_main_kobj,
&ktype_edac_pci_main_kobj,
&edac_class->kset.kobj, "pci");
if (err) {
debugf1("Failed to register '.../edac/pci'\n");
goto kobject_init_and_add_fail;
}
/* At this point, to 'release' the top level kobject
* for EDAC PCI, then edac_pci_main_kobj_teardown()
* must be used, for resources to be cleaned up properly
*/
kobject_uevent(edac_pci_top_main_kobj, KOBJ_ADD);
debugf1("Registered '.../edac/pci' kobject\n");
return 0;
/* Error unwind statck */
kobject_init_and_add_fail:
kfree(edac_pci_top_main_kobj);
kzalloc_fail:
module_put(THIS_MODULE);
decrement_count_fail:
/* if are on this error exit, nothing to tear down */
atomic_dec(&edac_pci_sysfs_refcount);
return err;
}
