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s390/qeth: remove unused fallback in Layer3's MAC code 

If the CREATE ADDR sent by qeth_l3_iqd_read_initial_mac() fails, its
callback sets a random MAC address on the net_device. The error then
propagates back, and qeth_l3_setup_netdev() bails out without
registering the net_device.

Any subsequent call to qeth_l3_setup_netdev() will then attempt a fresh
CREATE ADDR which either 1) also fails, or 2) sets a proper MAC address
on the net_device. Consequently, the net_device will never be registered
with a random MAC and we can drop the fallback code.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julian Wiedmann 2018-11-08 15:06:21 +01:00 committed by David S. Miller
parent 4fa55fa94f
commit 9168f5ae38
1 changed files with 0 additions and 3 deletions
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3
drivers/s390/net/qeth_l3_main.c
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@ -949,9 +949,6 @@ static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
if (cmd->hdr.return_code == 0) if (cmd->hdr.return_code == 0)
ether_addr_copy(card->dev->dev_addr, ether_addr_copy(card->dev->dev_addr,
cmd->data.create_destroy_addr.unique_id); cmd->data.create_destroy_addr.unique_id);
else
eth_random_addr(card->dev->dev_addr);
return 0; return 0;
} }