pci_p2pmem_find_many
p2p_dev = pci_p2pmem_find_many(clients, ARRAY_SIZE(clients));
EXPORT_SYMBOL_GPL(pci_p2pmem_find_many);
return pci_p2pmem_find_many(&client, 1);
struct pci_dev *pci_p2pmem_find_many(struct device **clients, int num_clients);