/**
* of_add_property - Add a property to a node
*/
int of_add_property(struct device_node *np, struct property *prop)
{
struct property **next;
unsigned long flags;
int rc;
rc = of_property_notify(OF_RECONFIG_ADD_PROPERTY, np, prop);
if (rc)
return rc;
prop->next = NULL;
raw_spin_lock_irqsave(&devtree_lock, flags);
next = &np->properties;
while (*next) {
if (strcmp(prop->name, (*next)->name) == 0) {
/* duplicate ! don't insert it */
raw_spin_unlock_irqrestore(&devtree_lock, flags);
return -1;
}
next = &(*next)->next;
}
*next = prop;
raw_spin_unlock_irqrestore(&devtree_lock, flags);
#ifdef CONFIG_PROC_DEVICETREE
/* try to add to proc as well if it was initialized */
if (np->pde)
proc_device_tree_add_prop(np->pde, prop);
#endif /* CONFIG_PROC_DEVICETREE */
return 0;
}
/**
* prom_add_property - Add a property to a node
*/
int prom_add_property(struct device_node *np, struct property *prop)
{
struct property **next;
unsigned long flags;
prop->next = NULL;
write_lock_irqsave(&devtree_lock, flags);
next = &np->properties;
while (*next) {
if (strcmp(prop->name, (*next)->name) == 0) {
/* duplicate ! don't insert it */
write_unlock_irqrestore(&devtree_lock, flags);
return -1;
}
next = &(*next)->next;
}
*next = prop;
write_unlock_irqrestore(&devtree_lock, flags);
#ifdef CONFIG_PROC_DEVICETREE
/* try to add to proc as well if it was initialized */
if (np->pde)
proc_device_tree_add_prop(np->pde, prop);
#endif /* CONFIG_PROC_DEVICETREE */
return 0;
}
void proc_device_tree_update_prop(struct proc_dir_entry *pde,
struct property *newprop,
struct property *oldprop)
{
struct proc_dir_entry *ent;
if (!oldprop) {
proc_device_tree_add_prop(pde, newprop);
return;
}
for (ent = pde->subdir; ent != NULL; ent = ent->next)
if (ent->data == oldprop)
break;
if (ent == NULL) {
pr_warn("device-tree: property \"%s\" does not exist\n",
oldprop->name);
} else {
ent->data = newprop;
ent->size = newprop->length;
}
}
