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path: root/drivers/net/gianfar.c
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Diffstat (limited to 'drivers/net/gianfar.c')
-rw-r--r--drivers/net/gianfar.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index ccb231c..2a0ad9a 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -949,6 +949,11 @@ static void gfar_detect_errata(struct gfar_private *priv)
(pvr == 0x80861010 && (mod & 0xfff9) == 0x80c0))
priv->errata |= GFAR_ERRATA_A002;
+ /* MPC8313 Rev < 2.0, MPC8548 rev 2.0 */
+ if ((pvr == 0x80850010 && mod == 0x80b0 && rev < 0x0020) ||
+ (pvr == 0x80210020 && mod == 0x8030 && rev == 0x0020))
+ priv->errata |= GFAR_ERRATA_12;
+
if (priv->errata)
dev_info(dev, "enabled errata workarounds, flags: 0x%x\n",
priv->errata);
@@ -2154,8 +2159,15 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
/* Set up checksumming */
if (CHECKSUM_PARTIAL == skb->ip_summed) {
fcb = gfar_add_fcb(skb);
- lstatus |= BD_LFLAG(TXBD_TOE);
- gfar_tx_checksum(skb, fcb);
+ /* as specified by errata */
+ if (unlikely(gfar_has_errata(priv, GFAR_ERRATA_12)
+ && ((unsigned long)fcb % 0x20) > 0x18)) {
+ __skb_pull(skb, GMAC_FCB_LEN);
+ skb_checksum_help(skb);
+ } else {
+ lstatus |= BD_LFLAG(TXBD_TOE);
+ gfar_tx_checksum(skb, fcb);
+ }
}
if (vlan_tx_tag_present(skb)) {