Eric Lee / smarc-ti-linux-kernel

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Commit 087edfb40a0efce6de24ad824e1aa971ed86b9b1

Authored by Eric Lee
1 parent 167a47470b
Exists in smarc-ti-linux-3.12.10

In Dual EMAC mode, when both the Etnernet connected is connected to same switch,… 

… it creates a loop in the switch and when a broadcast packet is received it is forwarded to the other port which stalls the whole switch and needs a reset/power cycle to the switch to recover. So intead of using the api, add only the default VLAN entry in dual EMAC case.

Showing 1 changed file with 6 additions and 1 deletions Side-by-side Diff

drivers/net/ethernet/ti/cpsw.c
Diff comments   View file @ 087edfb
... ... @@ -1247,7 +1247,12 @@
1247 1247 /* Add default VLAN */
1248 1248 /* if (!priv->data.dual_emac)
1249 1249 cpsw_add_default_vlan(priv);*/
1250   - cpsw_add_default_vlan(priv);
  1250 + if (!priv->data.dual_emac)
  1251 + cpsw_add_default_vlan(priv);
  1252 + else
  1253 + cpsw_ale_add_vlan(priv->ale, priv->data.default_vlan,
  1254 + ALE_ALL_PORTS << priv->host_port,
  1255 + ALE_ALL_PORTS << priv->host_port, 0, 0);
1251 1256  
1252 1257 if (!cpsw_common_res_usage_state(priv)) {
1253 1258 /* setup tx dma to fixed prio and zero offset */