static int __init pseries_memory_hotplug_init(void)
{
if (firmware_has_feature(FW_FEATURE_LPAR))
of_reconfig_notifier_register(&pseries_mem_nb);
return 0;
}
static int __init pseries_memory_hotplug_init(void)
{
if (firmware_has_feature(FW_FEATURE_LPAR))
of_reconfig_notifier_register(&pseries_mem_nb);
#ifdef CONFIG_MEMORY_HOTREMOVE
ppc_md.remove_memory = pseries_remove_memory;
#endif
return 0;
}
static int err_inject_init(void)
{
int err;
dir = notifier_err_inject_init("OF-reconfig",
notifier_err_inject_dir, &reconfig_err_inject, priority);
if (IS_ERR(dir))
return PTR_ERR(dir);
err = of_reconfig_notifier_register(&reconfig_err_inject.nb);
if (err)
debugfs_remove_recursive(dir);
return err;
}
static int nx842_probe(struct vio_dev *viodev,
const struct vio_device_id *id)
{
struct nx842_devdata *old_devdata, *new_devdata = NULL;
unsigned long flags;
int ret = 0;
new_devdata = kzalloc(sizeof(*new_devdata), GFP_NOFS);
if (!new_devdata)
return -ENOMEM;
new_devdata->counters = kzalloc(sizeof(*new_devdata->counters),
GFP_NOFS);
if (!new_devdata->counters) {
kfree(new_devdata);
return -ENOMEM;
}
spin_lock_irqsave(&devdata_mutex, flags);
old_devdata = rcu_dereference_check(devdata,
lockdep_is_held(&devdata_mutex));
if (old_devdata && old_devdata->vdev != NULL) {
dev_err(&viodev->dev, "%s: Attempt to register more than one instance of the hardware\n", __func__);
ret = -1;
goto error_unlock;
}
dev_set_drvdata(&viodev->dev, NULL);
new_devdata->vdev = viodev;
new_devdata->dev = &viodev->dev;
nx842_OF_set_defaults(new_devdata);
rcu_assign_pointer(devdata, new_devdata);
spin_unlock_irqrestore(&devdata_mutex, flags);
synchronize_rcu();
kfree(old_devdata);
of_reconfig_notifier_register(&nx842_of_nb);
ret = nx842_OF_upd(NULL);
if (ret)
goto error;
ret = crypto_register_alg(&nx842_pseries_alg);
if (ret) {
dev_err(&viodev->dev, "could not register comp alg: %d\n", ret);
goto error;
}
rcu_read_lock();
dev_set_drvdata(&viodev->dev, rcu_dereference(devdata));
rcu_read_unlock();
if (sysfs_create_group(&viodev->dev.kobj, &nx842_attribute_group)) {
dev_err(&viodev->dev, "could not create sysfs device attributes\n");
ret = -1;
goto error;
}
return 0;
error_unlock:
spin_unlock_irqrestore(&devdata_mutex, flags);
if (new_devdata)
kfree(new_devdata->counters);
kfree(new_devdata);
error:
return ret;
}