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-rw-r--r--drivers/of/base.c30
-rw-r--r--drivers/of/dynamic.c2
-rw-r--r--drivers/of/of_private.h3
3 files changed, 25 insertions, 10 deletions
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 017dd94f16ea..942461f36616 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -112,6 +112,7 @@ 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 +127,12 @@ 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)
+ if (name == orig_name) {
+ name = kstrdup(orig_name, GFP_KERNEL);
+ } else {
pr_warn("device-tree: Duplicate name in %s, renamed to \"%s\"\n",
kobject_name(kobj), name);
+ }
return name;
}
@@ -159,6 +163,7 @@ 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 +176,16 @@ 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;
@@ -1753,6 +1759,12 @@ 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))
@@ -1760,7 +1772,7 @@ 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);
}
/**
@@ -1830,7 +1842,7 @@ 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);
}
diff --git a/drivers/of/dynamic.c b/drivers/of/dynamic.c
index 53826b84e0ec..2d72ddcf534f 100644
--- a/drivers/of/dynamic.c
+++ b/drivers/of/dynamic.c
@@ -55,7 +55,7 @@ void __of_detach_node_sysfs(struct device_node *np)
/* only remove properties if on sysfs */
if (of_node_is_attached(np)) {
for_each_property_of_node(np, pp)
- sysfs_remove_bin_file(&np->kobj, &pp->attr);
+ __of_sysfs_remove_bin_file(np, pp);
kobject_del(&np->kobj);
}
diff --git a/drivers/of/of_private.h b/drivers/of/of_private.h
index 8e882e706cd8..46ddbee22ce3 100644
--- a/drivers/of/of_private.h
+++ b/drivers/of/of_private.h
@@ -81,6 +81,9 @@ extern int __of_attach_node_sysfs(struct device_node *np);
extern void __of_detach_node(struct device_node *np);
extern void __of_detach_node_sysfs(struct device_node *np);
+extern void __of_sysfs_remove_bin_file(struct device_node *np,
+ struct property *prop);
+
/* iterators for transactions, used for overlays */
/* forward iterator */
#define for_each_transaction_entry(_oft, _te) \