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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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2
drivers/s390/Makefile
View file

@ -2,7 +2,7 @@
# Makefile for the S/390 specific device drivers
#
obj-y += s390mach.o sysinfo.o
obj-y += s390mach.o sysinfo.o s390_rdev.o
obj-y += cio/ block/ char/ crypto/ net/ scsi/
drivers-y += drivers/s390/built-in.o

2
drivers/s390/block/dcssblk.c
View file

@ -15,7 +15,7 @@
#include <asm/io.h>
#include <linux/completion.h>
#include <linux/interrupt.h>
#include <asm/ccwdev.h> // for s390_root_dev_(un)register()
#include <asm/s390_rdev.h>
//#define DCSSBLK_DEBUG /* Debug messages on/off */
#define DCSSBLK_NAME "dcssblk"

41
drivers/s390/cio/css.c
View file

@ -481,45 +481,6 @@ struct bus_type css_bus_type = {
subsys_initcall(init_channel_subsystem);
/*
* Register root devices for some drivers. The release function must not be
* in the device drivers, so we do it here.
*/
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);
}
int
css_enqueue_subchannel_slow(unsigned long schid)
{
@ -564,6 +525,4 @@ css_slow_subchannels_exist(void)
MODULE_LICENSE("GPL");
EXPORT_SYMBOL(css_bus_type);
EXPORT_SYMBOL(s390_root_dev_register);
EXPORT_SYMBOL(s390_root_dev_unregister);
EXPORT_SYMBOL_GPL(css_characteristics_avail);

3
drivers/s390/net/cu3088.c
View file

@ -1,5 +1,5 @@
/*
* $Id: cu3088.c,v 1.35 2005/03/30 19:28:52 richtera Exp $
* $Id: cu3088.c,v 1.36 2005/10/25 14:37:17 cohuck Exp $
*
* CTC / LCS ccw_device driver
*
@ -27,6 +27,7 @@
#include <linux/module.h>
#include <linux/err.h>
#include <asm/s390_rdev.h>
#include <asm/ccwdev.h>
#include <asm/ccwgroup.h>

2
drivers/s390/net/iucv.c
View file

@ -54,7 +54,7 @@
#include <asm/s390_ext.h>
#include <asm/ebcdic.h>
#include <asm/smp.h>
#include <asm/ccwdev.h> //for root device stuff
#include <asm/s390_rdev.h>
/* FLAGS:
* All flags are defined in the field IPFLAGS1 of each function

1
drivers/s390/net/qeth_main.c
View file

@ -65,6 +65,7 @@
#include <asm/timex.h>
#include <asm/semaphore.h>
#include <asm/uaccess.h>
#include <asm/s390_rdev.h>
#include "qeth.h"
#include "qeth_mpc.h"

53
drivers/s390/s390_rdev.c Normal file
View file

@ -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);

3
include/asm-s390/ccwdev.h
View file

@ -185,8 +185,5 @@ extern struct ccw_device *ccw_device_probe_console(void);
extern int _ccw_device_get_device_number(struct ccw_device *);
extern int _ccw_device_get_subchannel_number(struct ccw_device *);
extern struct device *s390_root_dev_register(const char *);
extern void s390_root_dev_unregister(struct device *);
extern void *ccw_device_get_chp_desc(struct ccw_device *, int);
#endif /* _S390_CCWDEV_H_ */

15
include/asm-s390/s390_rdev.h Normal file
View file

@ -0,0 +1,15 @@
/*
* include/asm-s390/ccwdev.h
*
* Copyright (C) 2002,2005 IBM Deutschland Entwicklung GmbH, IBM Corporation
* Author(s): Cornelia Huck <cohuck@de.ibm.com>
* Carsten Otte <cotte@de.ibm.com>
*
* Interface for s390 root device
*/
#ifndef _S390_RDEV_H_
#define _S390_RDEV_H_
extern struct device *s390_root_dev_register(const char *);
extern void s390_root_dev_unregister(struct device *);
#endif /* _S390_RDEV_H_ */