tg3: fix ring init when there are more TX than RX channels

If TX channels are set to 4 and RX channels are set to less than 4,
using ethtool -L, the driver will try to initialize more RX channels
than it has allocated, causing an oops.

This fix only initializes the RX ring if it has been allocated.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thadeu Lima de Souza Cascardo 2014-11-25 14:21:11 -02:00 коммит произвёл David S. Miller
Родитель c3658e8d0f
Коммит a620a6bc1c
1 изменённых файлов: 2 добавлений и 1 удалений

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@ -8563,7 +8563,8 @@ static int tg3_init_rings(struct tg3 *tp)
if (tnapi->rx_rcb)
memset(tnapi->rx_rcb, 0, TG3_RX_RCB_RING_BYTES(tp));
if (tg3_rx_prodring_alloc(tp, &tnapi->prodring)) {
if (tnapi->prodring.rx_std &&
tg3_rx_prodring_alloc(tp, &tnapi->prodring)) {
tg3_free_rings(tp);
return -ENOMEM;
}