The id_entry will possibly be NULL, So, need check id_entry and make sure it not NULL before using it.
Signed-off-by: Jason Liu r64343@freescale.com --- drivers/net/fec.c | 12 ++++++------ 1 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/net/fec.c b/drivers/net/fec.c index 2a71373..02cdd71 100644 --- a/drivers/net/fec.c +++ b/drivers/net/fec.c @@ -293,7 +293,7 @@ fec_enet_start_xmit(struct sk_buff *skb, struct net_device *dev) * the system that it's running on. As the result, driver has to * swap every frame going to and coming from the controller. */ - if (id_entry->driver_data & FEC_QUIRK_SWAP_FRAME) + if (id_entry && id_entry->driver_data & FEC_QUIRK_SWAP_FRAME) swap_buffer(bufaddr, skb->len);
/* Save skb pointer */ @@ -529,7 +529,7 @@ fec_enet_rx(struct net_device *dev) dma_unmap_single(NULL, bdp->cbd_bufaddr, bdp->cbd_datlen, DMA_FROM_DEVICE);
- if (id_entry->driver_data & FEC_QUIRK_SWAP_FRAME) + if (id_entry && id_entry->driver_data & FEC_QUIRK_SWAP_FRAME) swap_buffer(data, pkt_len);
/* This does 16 byte alignment, exactly what we need. @@ -808,7 +808,7 @@ static int fec_enet_mii_init(struct platform_device *pdev) * mdio interface in board design, and need to be configured by * fec0 mii_bus. */ - if ((id_entry->driver_data & FEC_QUIRK_ENET_MAC) && pdev->id) { + if (id_entry && (id_entry->driver_data & FEC_QUIRK_ENET_MAC) && pdev->id) { /* fec1 uses fec0 mii_bus */ fep->mii_bus = fec0_mii_bus; return 0; @@ -851,7 +851,7 @@ static int fec_enet_mii_init(struct platform_device *pdev) goto err_out_free_mdio_irq;
/* save fec0 mii_bus */ - if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) + if (id_entry && id_entry->driver_data & FEC_QUIRK_ENET_MAC) fec0_mii_bus = fep->mii_bus;
return 0; @@ -1238,7 +1238,7 @@ fec_restart(struct net_device *dev, int duplex) * enet-mac reset will reset mac address registers too, * so need to reconfigure it. */ - if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) { + if (id_entry && id_entry->driver_data & FEC_QUIRK_ENET_MAC) { memcpy(&temp_mac, dev->dev_addr, ETH_ALEN); writel(cpu_to_be32(temp_mac[0]), fep->hwp + FEC_ADDR_LOW); writel(cpu_to_be32(temp_mac[1]), fep->hwp + FEC_ADDR_HIGH); @@ -1294,7 +1294,7 @@ fec_restart(struct net_device *dev, int duplex) * The phy interface and speed need to get configured * differently on enet-mac. */ - if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) { + if (id_entry && id_entry->driver_data & FEC_QUIRK_ENET_MAC) { val = readl(fep->hwp + FEC_R_CNTRL);
/* MII or RMII */