diff options
| -rw-r--r-- | drivers/of/base.c | 34 |
1 files changed, 21 insertions, 13 deletions
diff --git a/drivers/of/base.c b/drivers/of/base.c index 239e3da9e728..a63e77694d0f 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -1597,7 +1597,7 @@ int of_update_property(struct device_node *np, struct property *newprop) { struct property **next, *oldprop; unsigned long flags; - int rc = 0; + int rc, found = 0; rc = of_property_notify(OF_RECONFIG_UPDATE_PROPERTY, np, newprop); if (rc) @@ -1606,28 +1606,36 @@ int of_update_property(struct device_node *np, struct property *newprop) if (!newprop->name) return -EINVAL; + oldprop = of_find_property(np, newprop->name, NULL); + if (!oldprop) + return of_add_property(np, newprop); + raw_spin_lock_irqsave(&devtree_lock, flags); - oldprop = __of_find_property(np, newprop->name, NULL); - if (!oldprop) { - /* add the node */ - rc = __of_add_property(np, newprop); - } else { - /* replace the node */ - next = &oldprop; - newprop->next = oldprop->next; - *next = newprop; - oldprop->next = np->deadprops; - np->deadprops = oldprop; + next = &np->properties; + while (*next) { + if (*next == oldprop) { + /* found the node */ + newprop->next = oldprop->next; + *next = newprop; + oldprop->next = np->deadprops; + np->deadprops = oldprop; + found = 1; + break; + } + next = &(*next)->next; } raw_spin_unlock_irqrestore(&devtree_lock, flags); + if (!found) + return -ENODEV; + #ifdef CONFIG_PROC_DEVICETREE /* try to add to proc as well if it was initialized */ if (!rc && np->pde) proc_device_tree_update_prop(np->pde, newprop, oldprop); #endif /* CONFIG_PROC_DEVICETREE */ - return rc; + return 0; } #if defined(CONFIG_OF_DYNAMIC) |