reconfig.c (a02001086bbfb4da35d1228bebc2f1b442db455f) reconfig.c (948ad1acaf456b7213731cd9eb58654930335070)
1/*
2 * pSeries_reconfig.c - support for dynamic reconfiguration (including PCI
3 * Hotplug and Dynamic Logical Partitioning on RPA platforms).
4 *
5 * Copyright (C) 2005 Nathan Lynch
6 * Copyright (C) 2005 IBM Corporation
7 *
8 *

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17#include <linux/slab.h>
18#include <linux/of.h>
19
20#include <asm/prom.h>
21#include <asm/machdep.h>
22#include <asm/uaccess.h>
23#include <asm/mmu.h>
24
1/*
2 * pSeries_reconfig.c - support for dynamic reconfiguration (including PCI
3 * Hotplug and Dynamic Logical Partitioning on RPA platforms).
4 *
5 * Copyright (C) 2005 Nathan Lynch
6 * Copyright (C) 2005 IBM Corporation
7 *
8 *

--- 8 unchanged lines hidden (view full) ---

17#include <linux/slab.h>
18#include <linux/of.h>
19
20#include <asm/prom.h>
21#include <asm/machdep.h>
22#include <asm/uaccess.h>
23#include <asm/mmu.h>
24
25/**
26 * derive_parent - basically like dirname(1)
27 * @path: the full_name of a node to be added to the tree
28 *
29 * Returns the node which should be the parent of the node
30 * described by path. E.g., for path = "/foo/bar", returns
31 * the node with full_name = "/foo".
32 */
33static struct device_node *derive_parent(const char *path)
34{
35 struct device_node *parent = NULL;
36 char *parent_path = "/";
37 size_t parent_path_len = strrchr(path, '/') - path + 1;
25#include "of_helpers.h"
38
26
39 /* reject if path is "/" */
40 if (!strcmp(path, "/"))
41 return ERR_PTR(-EINVAL);
42
43 if (strrchr(path, '/') != path) {
44 parent_path = kmalloc(parent_path_len, GFP_KERNEL);
45 if (!parent_path)
46 return ERR_PTR(-ENOMEM);
47 strlcpy(parent_path, path, parent_path_len);
48 }
49 parent = of_find_node_by_path(parent_path);
50 if (!parent)
51 return ERR_PTR(-EINVAL);
52 if (strcmp(parent_path, "/"))
53 kfree(parent_path);
54 return parent;
55}
56
57static int pSeries_reconfig_add_node(const char *path, struct property *proplist)
58{
59 struct device_node *np;
60 int err = -ENOMEM;
61
62 np = kzalloc(sizeof(*np), GFP_KERNEL);
63 if (!np)
64 goto out_err;
65
66 np->full_name = kstrdup(path, GFP_KERNEL);
67 if (!np->full_name)
68 goto out_err;
69
70 np->properties = proplist;
71 of_node_set_flag(np, OF_DYNAMIC);
72 of_node_init(np);
73
27static int pSeries_reconfig_add_node(const char *path, struct property *proplist)
28{
29 struct device_node *np;
30 int err = -ENOMEM;
31
32 np = kzalloc(sizeof(*np), GFP_KERNEL);
33 if (!np)
34 goto out_err;
35
36 np->full_name = kstrdup(path, GFP_KERNEL);
37 if (!np->full_name)
38 goto out_err;
39
40 np->properties = proplist;
41 of_node_set_flag(np, OF_DYNAMIC);
42 of_node_init(np);
43
74 np->parent = derive_parent(path);
44 np->parent = pseries_of_derive_parent(path);
75 if (IS_ERR(np->parent)) {
76 err = PTR_ERR(np->parent);
77 goto out_err;
78 }
79
80 err = of_attach_node(np);
81 if (err) {
82 printk(KERN_ERR "Failed to add device node %s\n", path);

--- 373 unchanged lines hidden --- 		45 if (IS_ERR(np->parent)) {
46 err = PTR_ERR(np->parent);
47 goto out_err;
48 }
49
50 err = of_attach_node(np);
51 if (err) {
52 printk(KERN_ERR "Failed to add device node %s\n", path);

--- 373 unchanged lines hidden ---