net: mvneta: disable MVNETA_CAUSE_PSC_SYNC_CHANGE interrupt

The PSC sync change interrupt can fire multiple times while the link is
down, which is caused by noise on the serdes lines. As this isn't
information we make use of, it's pointless having the interrupt enabled.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
index 44d665887b50ad1d668eb7dc7be2f5c25e51e041..6a018cfa36f61a60809977b1aa02267d8f4f8b95 100644 (file)
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -2704,8 +2704,7 @@ static int mvneta_poll(struct napi_struct *napi, int budget)
                mvreg_write(pp, MVNETA_INTR_MISC_CAUSE, 0);
 
                if (cause_misc & (MVNETA_CAUSE_PHY_STATUS_CHANGE |
-                                 MVNETA_CAUSE_LINK_CHANGE |
-                                 MVNETA_CAUSE_PSC_SYNC_CHANGE))
+                                 MVNETA_CAUSE_LINK_CHANGE))
                        mvneta_link_change(pp);
        }
 
@@ -3044,8 +3043,7 @@ static void mvneta_start_dev(struct mvneta_port *pp)
 
        mvreg_write(pp, MVNETA_INTR_MISC_MASK,
                    MVNETA_CAUSE_PHY_STATUS_CHANGE |
-                   MVNETA_CAUSE_LINK_CHANGE |
-                   MVNETA_CAUSE_PSC_SYNC_CHANGE);
+                   MVNETA_CAUSE_LINK_CHANGE);
 
        phylink_start(pp->phylink);
        netif_tx_start_all_queues(pp->dev);
@@ -3570,8 +3568,7 @@ static int mvneta_cpu_online(unsigned int cpu, struct hlist_node *node)
        on_each_cpu(mvneta_percpu_unmask_interrupt, pp, true);
        mvreg_write(pp, MVNETA_INTR_MISC_MASK,
                    MVNETA_CAUSE_PHY_STATUS_CHANGE |
-                   MVNETA_CAUSE_LINK_CHANGE |
-                   MVNETA_CAUSE_PSC_SYNC_CHANGE);
+                   MVNETA_CAUSE_LINK_CHANGE);
        netif_tx_start_all_queues(pp->dev);
        spin_unlock(&pp->lock);
        return 0;
@@ -3612,8 +3609,7 @@ static int mvneta_cpu_dead(unsigned int cpu, struct hlist_node *node)
        on_each_cpu(mvneta_percpu_unmask_interrupt, pp, true);
        mvreg_write(pp, MVNETA_INTR_MISC_MASK,
                    MVNETA_CAUSE_PHY_STATUS_CHANGE |
-                   MVNETA_CAUSE_LINK_CHANGE |
-                   MVNETA_CAUSE_PSC_SYNC_CHANGE);
+                   MVNETA_CAUSE_LINK_CHANGE);
        netif_tx_start_all_queues(pp->dev);
        return 0;
 }