提交 f7d222ea 编写于 作者: L Linus Torvalds

Merge branch 'devicetree/merge' of git://git.secretlab.ca/git/linux-2.6

* 'devicetree/merge' of git://git.secretlab.ca/git/linux-2.6:
  of/promtree: allow DT device matching by fixing 'name' brokenness (v5)
  x86: OLPC: have prom_early_alloc BUG rather than return NULL
  of/flattree: Drop an uninteresting message to pr_debug level
  of: Add missing of_address.h to xilinx ehci driver
......@@ -140,8 +140,7 @@ void * __init prom_early_alloc(unsigned long size)
* wasted bootmem) and hand off chunks of it to callers.
*/
res = alloc_bootmem(chunk_size);
if (!res)
return NULL;
BUG_ON(!res);
prom_early_allocated += chunk_size;
memset(res, 0, chunk_size);
free_mem = chunk_size;
......
......@@ -36,19 +36,55 @@ unsigned int of_pdt_unique_id __initdata;
(p)->unique_id = of_pdt_unique_id++; \
} while (0)
static inline const char *of_pdt_node_name(struct device_node *dp)
static char * __init of_pdt_build_full_name(struct device_node *dp)
{
return dp->path_component_name;
int len, ourlen, plen;
char *n;
dp->path_component_name = build_path_component(dp);
plen = strlen(dp->parent->full_name);
ourlen = strlen(dp->path_component_name);
len = ourlen + plen + 2;
n = prom_early_alloc(len);
strcpy(n, dp->parent->full_name);
if (!of_node_is_root(dp->parent)) {
strcpy(n + plen, "/");
plen++;
}
strcpy(n + plen, dp->path_component_name);
return n;
}
#else
#else /* CONFIG_SPARC */
static inline void of_pdt_incr_unique_id(void *p) { }
static inline void irq_trans_init(struct device_node *dp) { }
static inline const char *of_pdt_node_name(struct device_node *dp)
static char * __init of_pdt_build_full_name(struct device_node *dp)
{
return dp->name;
static int failsafe_id = 0; /* for generating unique names on failure */
char *buf;
int len;
if (of_pdt_prom_ops->pkg2path(dp->phandle, NULL, 0, &len))
goto failsafe;
buf = prom_early_alloc(len + 1);
if (of_pdt_prom_ops->pkg2path(dp->phandle, buf, len, &len))
goto failsafe;
return buf;
failsafe:
buf = prom_early_alloc(strlen(dp->parent->full_name) +
strlen(dp->name) + 16);
sprintf(buf, "%s/%s@unknown%i",
of_node_is_root(dp->parent) ? "" : dp->parent->full_name,
dp->name, failsafe_id++);
pr_err("%s: pkg2path failed; assigning %s\n", __func__, buf);
return buf;
}
#endif /* !CONFIG_SPARC */
......@@ -132,47 +168,6 @@ static char * __init of_pdt_get_one_property(phandle node, const char *name)
return buf;
}
static char * __init of_pdt_try_pkg2path(phandle node)
{
char *res, *buf = NULL;
int len;
if (!of_pdt_prom_ops->pkg2path)
return NULL;
if (of_pdt_prom_ops->pkg2path(node, buf, 0, &len))
return NULL;
buf = prom_early_alloc(len + 1);
if (of_pdt_prom_ops->pkg2path(node, buf, len, &len)) {
pr_err("%s: package-to-path failed\n", __func__);
return NULL;
}
res = strrchr(buf, '/');
if (!res) {
pr_err("%s: couldn't find / in %s\n", __func__, buf);
return NULL;
}
return res+1;
}
/*
* When fetching the node's name, first try using package-to-path; if
* that fails (either because the arch hasn't supplied a PROM callback,
* or some other random failure), fall back to just looking at the node's
* 'name' property.
*/
static char * __init of_pdt_build_name(phandle node)
{
char *buf;
buf = of_pdt_try_pkg2path(node);
if (!buf)
buf = of_pdt_get_one_property(node, "name");
return buf;
}
static struct device_node * __init of_pdt_create_node(phandle node,
struct device_node *parent)
{
......@@ -187,7 +182,7 @@ static struct device_node * __init of_pdt_create_node(phandle node,
kref_init(&dp->kref);
dp->name = of_pdt_build_name(node);
dp->name = of_pdt_get_one_property(node, "name");
dp->type = of_pdt_get_one_property(node, "device_type");
dp->phandle = node;
......@@ -198,26 +193,6 @@ static struct device_node * __init of_pdt_create_node(phandle node,
return dp;
}
static char * __init of_pdt_build_full_name(struct device_node *dp)
{
int len, ourlen, plen;
char *n;
plen = strlen(dp->parent->full_name);
ourlen = strlen(of_pdt_node_name(dp));
len = ourlen + plen + 2;
n = prom_early_alloc(len);
strcpy(n, dp->parent->full_name);
if (!of_node_is_root(dp->parent)) {
strcpy(n + plen, "/");
plen++;
}
strcpy(n + plen, of_pdt_node_name(dp));
return n;
}
static struct device_node * __init of_pdt_build_tree(struct device_node *parent,
phandle node,
struct device_node ***nextp)
......@@ -240,9 +215,6 @@ static struct device_node * __init of_pdt_build_tree(struct device_node *parent,
*(*nextp) = dp;
*nextp = &dp->allnext;
#if defined(CONFIG_SPARC)
dp->path_component_name = build_path_component(dp);
#endif
dp->full_name = of_pdt_build_full_name(dp);
dp->child = of_pdt_build_tree(dp,
......
......@@ -29,6 +29,7 @@
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/of_address.h>
/**
* ehci_xilinx_of_setup - Initialize the device for ehci_reset()
......
......@@ -233,7 +233,7 @@ void __init proc_device_tree_init(void)
return;
root = of_find_node_by_path("/");
if (root == NULL) {
printk(KERN_ERR "/proc/device-tree: can't find root\n");
pr_debug("/proc/device-tree: can't find root\n");
return;
}
proc_device_tree_add_node(root, proc_device_tree);
......
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