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[PATCH] s390: move s390_root_dev_* out of the cio layer

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Extract the s390_root_dev_* functions from the common I/O layer as they are
also used by non-ccw device drivers.

Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Carsten Otte
2006-01-06 00:19:14 -08:00
committed by Linus Torvalds
parent 6810a2bce3
commit cfb1b55595
9 changed files with 74 additions and 48 deletions
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53
drivers/s390/s390_rdev.c Normal file
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@@ -0,0 +1,53 @@
/*
* drivers/s390/s390_rdev.c
* s390 root device
* $Revision: 1.2 $
*
* Copyright (C) 2002, 2005 IBM Deutschland Entwicklung GmbH,
* IBM Corporation
* Author(s): Cornelia Huck (cohuck@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);