/**
* pset_copy_set - copies property set
* @pset: Property set to copy
*
* This function takes a deep copy of the given property set and returns
* pointer to the copy. Call device_free_property_set() to free resources
* allocated in this function.
*
* Return: Pointer to the new property set or error pointer.
*/
static struct property_set *pset_copy_set(const struct property_set *pset)
{
const struct property_entry *entry;
struct property_set *p;
size_t i, n = 0;
p = kzalloc(sizeof(*p), GFP_KERNEL);
if (!p)
return ERR_PTR(-ENOMEM);
while (pset->properties[n].name)
n++;
p->properties = kcalloc(n + 1, sizeof(*entry), GFP_KERNEL);
if (!p->properties) {
kfree(p);
return ERR_PTR(-ENOMEM);
}
for (i = 0; i < n; i++) {
int ret = pset_copy_entry(&p->properties[i],
&pset->properties[i]);
if (ret) {
pset_free_set(p);
return ERR_PTR(ret);
}
}
return p;
}
/**
* device_remove_properties - Remove properties from a device object.
* @dev: Device whose properties to remove.
*
* The function removes properties previously associated to the device
* secondary firmware node with device_add_properties(). Memory allocated
* to the properties will also be released.
*/
void device_remove_properties(struct device *dev)
{
struct fwnode_handle *fwnode;
fwnode = dev_fwnode(dev);
if (!fwnode)
return;
/*
* Pick either primary or secondary node depending which one holds
* the pset. If there is no real firmware node (ACPI/DT) primary
* will hold the pset.
*/
if (is_pset_node(fwnode)) {
set_primary_fwnode(dev, NULL);
pset_free_set(to_pset_node(fwnode));
} else {
fwnode = fwnode->secondary;
if (!IS_ERR(fwnode) && is_pset_node(fwnode)) {
set_secondary_fwnode(dev, NULL);
pset_free_set(to_pset_node(fwnode));
}
}
}
