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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>
This commit is contained in:
Russell King 2018-01-02 17:25:09 +00:00 committed by David S. Miller
parent 6d81f45145
commit 856b2cc560
1 changed files with 4 additions and 8 deletions
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12
drivers/net/ethernet/marvell/mvneta.c
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@ -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;
}