diff options
Diffstat (limited to 'net/core/of_net.c')
| -rw-r--r-- | net/core/of_net.c | 33 |
1 files changed, 11 insertions, 22 deletions
diff --git a/net/core/of_net.c b/net/core/of_net.c index 95a64c813ae5..f1a9bf7578e7 100644 --- a/net/core/of_net.c +++ b/net/core/of_net.c @@ -61,7 +61,7 @@ static int of_get_mac_addr_nvmem(struct device_node *np, u8 *addr) { struct platform_device *pdev = of_find_device_by_node(np); struct nvmem_cell *cell; - const void *buf; + const void *mac; size_t len; int ret; @@ -78,32 +78,21 @@ static int of_get_mac_addr_nvmem(struct device_node *np, u8 *addr) if (IS_ERR(cell)) return PTR_ERR(cell); - buf = nvmem_cell_read(cell, &len); + mac = nvmem_cell_read(cell, &len); nvmem_cell_put(cell); - if (IS_ERR(buf)) - return PTR_ERR(buf); - - ret = 0; - if (len == ETH_ALEN) { - if (is_valid_ether_addr(buf)) - memcpy(addr, buf, ETH_ALEN); - else - ret = -EINVAL; - } else if (len == 3 * ETH_ALEN - 1) { - u8 mac[ETH_ALEN]; - - if (mac_pton(buf, mac)) - memcpy(addr, mac, ETH_ALEN); - else - ret = -EINVAL; - } else { - ret = -EINVAL; + if (IS_ERR(mac)) + return PTR_ERR(mac); + + if (len != ETH_ALEN || !is_valid_ether_addr(mac)) { + kfree(mac); + return -EINVAL; } - kfree(buf); + memcpy(addr, mac, ETH_ALEN); + kfree(mac); - return ret; + return 0; } /** |