projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| cfb1b555 CO |
1 | /* |
| 2 | * drivers/s390/s390_rdev.c | |
| 3 | * s390 root device | |
| cfb1b555 CO |
4 | * |
| 5 | * Copyright (C) 2002, 2005 IBM Deutschland Entwicklung GmbH, | |
| 6 | * IBM Corporation | |
| 4ce3b30c | 7 | * Author(s): Cornelia Huck (cornelia.huck@de.ibm.com) |
| cfb1b555 CO |
8 | * Carsten Otte (cotte@de.ibm.com) |
| 9 | */ | |
| 10 | ||
| 11 | #include <linux/slab.h> | |
| 12 | #include <linux/err.h> | |
| 13 | #include <linux/device.h> | |
| 14 | #include <asm/s390_rdev.h> | |
| 15 | ||
| 16 | static void | |
| 17 | s390_root_dev_release(struct device *dev) | |
| 18 | { | |
| 19 | kfree(dev); | |
| 20 | } | |
| 21 | ||
| 22 | struct device * | |
| 23 | s390_root_dev_register(const char *name) | |
| 24 | { | |
| 25 | struct device *dev; | |
| 26 | int ret; | |
| 27 | ||
| 28 | if (!strlen(name)) | |
| 29 | return ERR_PTR(-EINVAL); | |
| 88abaab4 | 30 | dev = kzalloc(sizeof(struct device), GFP_KERNEL); |
| cfb1b555 CO |
31 | if (!dev) |
| 32 | return ERR_PTR(-ENOMEM); | |
| cfb1b555 CO |
33 | strncpy(dev->bus_id, name, min(strlen(name), (size_t)BUS_ID_SIZE)); |
| 34 | dev->release = s390_root_dev_release; | |
| 35 | ret = device_register(dev); | |
| 36 | if (ret) { | |
| 37 | kfree(dev); | |
| 38 | return ERR_PTR(ret); | |
| 39 | } | |
| 40 | return dev; | |
| 41 | } | |
| 42 | ||
| 43 | void | |
| 44 | s390_root_dev_unregister(struct device *dev) | |
| 45 | { | |
| 46 | if (dev) | |
| 47 | device_unregister(dev); | |
| 48 | } | |
| 49 | ||
| 50 | EXPORT_SYMBOL(s390_root_dev_register); | |
| 51 | EXPORT_SYMBOL(s390_root_dev_unregister); |