[PATCH net-next 1/4] net: dsa: move up phy enabling in core

[Vivien Didelot]

bcm_sf2 is currently the only driver using the phy argument passed to
.port_enable. It resets the state machine if the phy has been hard
reset. This check is generic and can be moved to DSA core.

Signed-off-by: Vivien Didelot <vivien.dide...@savoirfairelinux.com>
---
 drivers/net/dsa/bcm_sf2.c | 16 +---------------
 net/dsa/slave.c           | 15 +++++++++++++--
 2 files changed, 14 insertions(+), 17 deletions(-)

diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
index 898d5642b516..ad96b9725a2c 100644
--- a/drivers/net/dsa/bcm_sf2.c
+++ b/drivers/net/dsa/bcm_sf2.c
@@ -184,22 +184,8 @@ static int bcm_sf2_port_setup(struct dsa_switch *ds, int 
port,
        core_writel(priv, reg, CORE_PORT_TC2_QOS_MAP_PORT(port));
 
        /* Re-enable the GPHY and re-apply workarounds */
-       if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1) {
+       if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1)
                bcm_sf2_gphy_enable_set(ds, true);
-               if (phy) {
-                       /* if phy_stop() has been called before, phy
-                        * will be in halted state, and phy_start()
-                        * will call resume.
-                        *
-                        * the resume path does not configure back
-                        * autoneg settings, and since we hard reset
-                        * the phy manually here, we need to reset the
-                        * state machine also.
-                        */
-                       phy->state = PHY_READY;
-                       phy_init_hw(phy);
-               }
-       }
 
        /* Enable MoCA port interrupts to get notified */
        if (port == priv->moca_port)
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 02ace7d462c4..606812160fd5 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -72,6 +72,7 @@ static int dsa_slave_get_iflink(const struct net_device *dev)
 static int dsa_slave_open(struct net_device *dev)
 {
        struct dsa_slave_priv *p = netdev_priv(dev);
+       struct phy_device *phy = p->phy;
        struct dsa_port *dp = p->dp;
        struct dsa_switch *ds = dp->ds;
        struct net_device *master = dsa_master_netdev(p);
@@ -106,8 +107,18 @@ static int dsa_slave_open(struct net_device *dev)
 
        dsa_port_set_state_now(p->dp, stp_state);
 
-       if (p->phy)
-               phy_start(p->phy);
+       if (phy) {
+               /* If phy_stop() has been called before, phy will be in
+                * halted state, and phy_start() will call resume.
+                *
+                * The resume path does not configure back autoneg
+                * settings, and since the internal phy may have been
+                * hard reset, we need to reset the state machine also.
+                */
+               phy->state = PHY_READY;
+               phy_init_hw(phy);
+               phy_start(phy);
+       }
 
        return 0;
 
-- 
2.14.1