cfb1b55595
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>
53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
/*
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* drivers/s390/s390_rdev.c
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* s390 root device
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* $Revision: 1.2 $
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*
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* Copyright (C) 2002, 2005 IBM Deutschland Entwicklung GmbH,
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* IBM Corporation
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* Author(s): Cornelia Huck (cohuck@de.ibm.com)
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* Carsten Otte (cotte@de.ibm.com)
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*/
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#include <linux/slab.h>
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#include <linux/err.h>
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#include <linux/device.h>
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#include <asm/s390_rdev.h>
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static void
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s390_root_dev_release(struct device *dev)
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{
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kfree(dev);
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}
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struct device *
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s390_root_dev_register(const char *name)
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{
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struct device *dev;
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int ret;
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if (!strlen(name))
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return ERR_PTR(-EINVAL);
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dev = kmalloc(sizeof(struct device), GFP_KERNEL);
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if (!dev)
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return ERR_PTR(-ENOMEM);
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memset(dev, 0, sizeof(struct device));
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strncpy(dev->bus_id, name, min(strlen(name), (size_t)BUS_ID_SIZE));
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dev->release = s390_root_dev_release;
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ret = device_register(dev);
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if (ret) {
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kfree(dev);
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return ERR_PTR(ret);
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}
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return dev;
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}
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void
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s390_root_dev_unregister(struct device *dev)
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{
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if (dev)
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device_unregister(dev);
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}
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EXPORT_SYMBOL(s390_root_dev_register);
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EXPORT_SYMBOL(s390_root_dev_unregister);
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