diff options
| -rw-r--r-- | drivers/net/ethernet/freescale/gianfar.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c index 6e12f9365856..9125d9abf099 100644 --- a/drivers/net/ethernet/freescale/gianfar.c +++ b/drivers/net/ethernet/freescale/gianfar.c @@ -754,9 +754,19 @@ static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev) num_tx_qs = 1; num_rx_qs = 1; } else { /* MQ_MG_MODE */ + /* get the actual number of supported groups */ + unsigned int num_grps = of_get_available_child_count(np); + + if (num_grps == 0 || num_grps > MAXGROUPS) { + dev_err(&ofdev->dev, "Invalid # of int groups(%d)\n", + num_grps); + pr_err("Cannot do alloc_etherdev, aborting\n"); + return -EINVAL; + } + if (poll_mode == GFAR_SQ_POLLING) { - num_tx_qs = 2; /* one txq per int group */ - num_rx_qs = 2; /* one rxq per int group */ + num_tx_qs = num_grps; /* one txq per int group */ + num_rx_qs = num_grps; /* one rxq per int group */ } else { /* GFAR_MQ_POLLING */ num_tx_qs = tx_queues ? *tx_queues : 1; num_rx_qs = rx_queues ? *rx_queues : 1; |