[PATCH net-next v2 2/3] dpaa2-eth: Use stored link settings

[Ioana Radulescu]

Whenever a link state change occurs, we get notified and save
the new link settings in the device's private data. In ethtool
get_link_ksettings, use the stored state instead of interrogating
the firmware each time.

Signed-off-by: Ioana Radulescu <ruxandra.radule...@nxp.com>
---
v2: split from main pause frames patch

 drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c     |  6 ++++--
 drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c | 15 +++------------
 2 files changed, 7 insertions(+), 14 deletions(-)

diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c 
b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
index 0acb115..2c6f9b1 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -1222,9 +1222,8 @@ static int link_state_update(struct dpaa2_eth_priv *priv)
 
        /* Chech link state; speed / duplex changes are not treated yet */
        if (priv->link_state.up == state.up)
-               return 0;
+               goto out;
 
-       priv->link_state = state;
        if (state.up) {
                netif_carrier_on(priv->net_dev);
                netif_tx_start_all_queues(priv->net_dev);
@@ -1236,6 +1235,9 @@ static int link_state_update(struct dpaa2_eth_priv *priv)
        netdev_info(priv->net_dev, "Link Event: state %s\n",
                    state.up ? "up" : "down");
 
+out:
+       priv->link_state = state;
+
        return 0;
 }
 
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c 
b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c
index 5c9816b..fb17042 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c
@@ -78,23 +78,14 @@ static int
 dpaa2_eth_get_link_ksettings(struct net_device *net_dev,
                             struct ethtool_link_ksettings *link_settings)
 {
-       struct dpni_link_state state = {0};
-       int err = 0;
        struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
 
-       err = dpni_get_link_state(priv->mc_io, 0, priv->mc_token, &state);
-       if (err) {
-               netdev_err(net_dev, "ERROR %d getting link state\n", err);
-               goto out;
-       }
-
        link_settings->base.autoneg = AUTONEG_DISABLE;
-       if (!(state.options & DPNI_LINK_OPT_HALF_DUPLEX))
+       if (!(priv->link_state.options & DPNI_LINK_OPT_HALF_DUPLEX))
                link_settings->base.duplex = DUPLEX_FULL;
-       link_settings->base.speed = state.rate;
+       link_settings->base.speed = priv->link_state.rate;
 
-out:
-       return err;
+       return 0;
 }
 
 static void dpaa2_eth_get_strings(struct net_device *netdev, u32 stringset,
-- 
2.7.4