参照元†
返り値†
/**
* of_reserved_mem_device_init() - assign reserved memory region to given device
*
* This function assign memory region pointed by "memory-region" device tree
* property to the given device.
*/
int of_reserved_mem_device_init(struct device *dev)
{
struct reserved_mem *rmem;
struct device_node *np;
int ret;
np = of_parse_phandle(dev->of_node, "memory-region", 0);
if (!np)
return -ENODEV;
rmem = __find_rmem(np);
of_node_put(np);
if (!rmem || !rmem->ops || !rmem->ops->device_init)
return -EINVAL;
ret = rmem->ops->device_init(rmem, dev);
if (ret == 0)
dev_info(dev, "assigned reserved memory node %s\n", rmem->name);
return ret;
}
EXPORT_SYMBOL_GPL(of_reserved_mem_device_init);
コメント†