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path: root/drivers/of/base.c
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Diffstat (limited to 'drivers/of/base.c')
-rw-r--r--drivers/of/base.c41
1 files changed, 28 insertions, 13 deletions
diff --git a/drivers/of/base.c b/drivers/of/base.c
index ebf84e3b56d5..a4b608776c73 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -17,6 +17,9 @@
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
+
+#define pr_fmt(fmt) "OF: " fmt
+
#include <linux/console.h>
#include <linux/ctype.h>
#include <linux/cpu.h>
@@ -112,6 +115,7 @@ static ssize_t of_node_property_read(struct file *filp, struct kobject *kobj,
return memory_read_from_buffer(buf, count, &offset, pp->value, pp->length);
}
+/* always return newly allocated name, caller must free after use */
static const char *safe_name(struct kobject *kobj, const char *orig_name)
{
const char *name = orig_name;
@@ -126,9 +130,12 @@ static const char *safe_name(struct kobject *kobj, const char *orig_name)
name = kasprintf(GFP_KERNEL, "%s#%i", orig_name, ++i);
}
- if (name != orig_name)
- pr_warn("device-tree: Duplicate name in %s, renamed to \"%s\"\n",
+ if (name == orig_name) {
+ name = kstrdup(orig_name, GFP_KERNEL);
+ } else {
+ pr_warn("Duplicate name in %s, renamed to \"%s\"\n",
kobject_name(kobj), name);
+ }
return name;
}
@@ -159,6 +166,7 @@ int __of_add_property_sysfs(struct device_node *np, struct property *pp)
int __of_attach_node_sysfs(struct device_node *np)
{
const char *name;
+ struct kobject *parent;
struct property *pp;
int rc;
@@ -171,15 +179,16 @@ int __of_attach_node_sysfs(struct device_node *np)
np->kobj.kset = of_kset;
if (!np->parent) {
/* Nodes without parents are new top level trees */
- rc = kobject_add(&np->kobj, NULL, "%s",
- safe_name(&of_kset->kobj, "base"));
+ name = safe_name(&of_kset->kobj, "base");
+ parent = NULL;
} else {
name = safe_name(&np->parent->kobj, kbasename(np->full_name));
- if (!name || !name[0])
- return -EINVAL;
-
- rc = kobject_add(&np->kobj, &np->parent->kobj, "%s", name);
+ parent = &np->parent->kobj;
}
+ if (!name)
+ return -ENOMEM;
+ rc = kobject_add(&np->kobj, parent, "%s", name);
+ kfree(name);
if (rc)
return rc;
@@ -198,7 +207,7 @@ void __init of_core_init(void)
of_kset = kset_create_and_add("devicetree", NULL, firmware_kobj);
if (!of_kset) {
mutex_unlock(&of_mutex);
- pr_err("devicetree: failed to register existing nodes\n");
+ pr_err("failed to register existing nodes\n");
return;
}
for_each_of_allnodes(np)
@@ -1815,6 +1824,12 @@ int __of_remove_property(struct device_node *np, struct property *prop)
return 0;
}
+void __of_sysfs_remove_bin_file(struct device_node *np, struct property *prop)
+{
+ sysfs_remove_bin_file(&np->kobj, &prop->attr);
+ kfree(prop->attr.attr.name);
+}
+
void __of_remove_property_sysfs(struct device_node *np, struct property *prop)
{
if (!IS_ENABLED(CONFIG_SYSFS))
@@ -1822,7 +1837,7 @@ void __of_remove_property_sysfs(struct device_node *np, struct property *prop)
/* at early boot, bail here and defer setup to of_init() */
if (of_kset && of_node_is_attached(np))
- sysfs_remove_bin_file(&np->kobj, &prop->attr);
+ __of_sysfs_remove_bin_file(np, prop);
}
/**
@@ -1895,7 +1910,7 @@ void __of_update_property_sysfs(struct device_node *np, struct property *newprop
return;
if (oldprop)
- sysfs_remove_bin_file(&np->kobj, &oldprop->attr);
+ __of_sysfs_remove_bin_file(np, oldprop);
__of_add_property_sysfs(np, newprop);
}
@@ -2257,8 +2272,8 @@ struct device_node *of_graph_get_next_endpoint(const struct device_node *parent,
of_node_put(node);
if (!port) {
- pr_err("%s(): no port node found in %s\n",
- __func__, parent->full_name);
+ pr_err("graph: no port node found in %s\n",
+ parent->full_name);
return NULL;
}
} else {