52  * Search the device tree for the best MAC address to use.  'mac-address' is
53  * checked first, because that is supposed to contain to "most recent" MAC
54  * address. If that isn't set, then 'local-mac-address' is checked next,
60  * MAC address.
62  * All-zero MAC addresses are rejected, because those could be properties that
64  * DTS could define 'mac-address' and 'local-mac-address', with zero MAC
65  * addresses.  Some older U-Boots only initialized 'local-mac-address'.  In
66  * this case, the real MAC is in 'local-mac-address', and 'mac-address' exists
73 	addr = of_get_mac_addr(np, "mac-address");  in of_get_mac_address()
77 	addr = of_get_mac_addr(np, "local-mac-address");  in of_get_mac_address()
86  * Obtain the MAC address from an nvmem provider named 'mac-address' through
91  * @addr:	Pointer to receive the MAC address using ether_addr_copy()
96 	const void *mac;  in of_get_nvmem_mac_address()  local
100 	cell = of_nvmem_cell_get(np, "mac-address");  in of_get_nvmem_mac_address()
104 	mac = nvmem_cell_read(cell, &len);  in of_get_nvmem_mac_address()
108 	if (IS_ERR(mac))  in of_get_nvmem_mac_address()
109 		return PTR_ERR(mac);  in of_get_nvmem_mac_address()
111 	if (len < ETH_ALEN || !is_valid_ether_addr(mac)) {  in of_get_nvmem_mac_address()
114 		ether_addr_copy(addr, mac);  in of_get_nvmem_mac_address()
118 	kfree(mac);  in of_get_nvmem_mac_address()