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/*
* drivers/s390/s390_rdev.c
* s390 root device
*
* Copyright (C) 2002, 2005 IBM Deutschland Entwicklung GmbH,
* IBM Corporation
* Author(s): Cornelia Huck (cornelia.huck@de.ibm.com)
* Carsten Otte (cotte@de.ibm.com)
*/
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/device.h>
#include <asm/s390_rdev.h>
static void
s390_root_dev_release(struct device *dev)
{
kfree(dev);
}
struct device *
s390_root_dev_register(const char *name)
{
struct device *dev;
int ret;
if (!strlen(name))
return ERR_PTR(-EINVAL);
dev = kmalloc(sizeof(struct device), GFP_KERNEL);
if (!dev)
return ERR_PTR(-ENOMEM);
memset(dev, 0, sizeof(struct device));
strncpy(dev->bus_id, name, min(strlen(name), (size_t)BUS_ID_SIZE));
dev->release = s390_root_dev_release;
ret = device_register(dev);
if (ret) {
kfree(dev);
return ERR_PTR(ret);
}
return dev;
}
void
s390_root_dev_unregister(struct device *dev)
{
if (dev)
device_unregister(dev);
}
EXPORT_SYMBOL(s390_root_dev_register);
EXPORT_SYMBOL(s390_root_dev_unregister);
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