59 lines
2 KiB
Diff
59 lines
2 KiB
Diff
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From: Russell King <rmk+kernel@armlinux.org.uk>
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Date: Sat, 24 Dec 2016 10:27:08 +0000
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Subject: [PATCH] net: mvneta: disable MVNETA_CAUSE_PSC_SYNC_CHANGE
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interrupt
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The PSC sync change interrupt can fire multiple times while the link is
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down. As this isn't information we make use of, it's pointless having
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the interrupt enabled, so let's disable this interrupt.
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Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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---
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--- a/drivers/net/ethernet/marvell/mvneta.c
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+++ b/drivers/net/ethernet/marvell/mvneta.c
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@@ -2629,9 +2629,11 @@ static int mvneta_poll(struct napi_struc
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mvreg_write(pp, MVNETA_INTR_MISC_CAUSE, 0);
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if (cause_misc & (MVNETA_CAUSE_PHY_STATUS_CHANGE |
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- MVNETA_CAUSE_LINK_CHANGE |
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- MVNETA_CAUSE_PSC_SYNC_CHANGE))
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+ MVNETA_CAUSE_LINK_CHANGE)) {
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+ printk(KERN_DEBUG "%s: cause 0x%08x:0x%08x\n",
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+ __func__, cause_rx_tx, cause_misc);
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mvneta_link_change(pp);
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+ }
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}
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/* Release Tx descriptors */
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@@ -2948,8 +2950,7 @@ static void mvneta_start_dev(struct mvne
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mvreg_write(pp, MVNETA_INTR_MISC_MASK,
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MVNETA_CAUSE_PHY_STATUS_CHANGE |
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- MVNETA_CAUSE_LINK_CHANGE |
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- MVNETA_CAUSE_PSC_SYNC_CHANGE);
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+ MVNETA_CAUSE_LINK_CHANGE);
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phylink_start(pp->phylink);
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netif_tx_start_all_queues(pp->dev);
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@@ -3440,8 +3441,7 @@ static int mvneta_cpu_online(unsigned in
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on_each_cpu(mvneta_percpu_unmask_interrupt, pp, true);
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mvreg_write(pp, MVNETA_INTR_MISC_MASK,
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MVNETA_CAUSE_PHY_STATUS_CHANGE |
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- MVNETA_CAUSE_LINK_CHANGE |
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- MVNETA_CAUSE_PSC_SYNC_CHANGE);
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+ MVNETA_CAUSE_LINK_CHANGE);
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netif_tx_start_all_queues(pp->dev);
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spin_unlock(&pp->lock);
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return 0;
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@@ -3482,8 +3482,7 @@ static int mvneta_cpu_dead(unsigned int
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on_each_cpu(mvneta_percpu_unmask_interrupt, pp, true);
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mvreg_write(pp, MVNETA_INTR_MISC_MASK,
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MVNETA_CAUSE_PHY_STATUS_CHANGE |
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- MVNETA_CAUSE_LINK_CHANGE |
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- MVNETA_CAUSE_PSC_SYNC_CHANGE);
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+ MVNETA_CAUSE_LINK_CHANGE);
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netif_tx_start_all_queues(pp->dev);
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return 0;
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}
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