diff options
Diffstat (limited to 'target/linux/mvebu/patches-4.9/420-net-mvneta-disable-MVNETA_CAUSE_PSC_SYNC_CHANGE-inte.patch')
| -rw-r--r-- | target/linux/mvebu/patches-4.9/420-net-mvneta-disable-MVNETA_CAUSE_PSC_SYNC_CHANGE-inte.patch | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/target/linux/mvebu/patches-4.9/420-net-mvneta-disable-MVNETA_CAUSE_PSC_SYNC_CHANGE-inte.patch b/target/linux/mvebu/patches-4.9/420-net-mvneta-disable-MVNETA_CAUSE_PSC_SYNC_CHANGE-inte.patch new file mode 100644 index 0000000000..c0abab57da --- /dev/null +++ b/target/linux/mvebu/patches-4.9/420-net-mvneta-disable-MVNETA_CAUSE_PSC_SYNC_CHANGE-inte.patch @@ -0,0 +1,58 @@ +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Sat, 24 Dec 2016 10:27:08 +0000 +Subject: [PATCH] net: mvneta: disable MVNETA_CAUSE_PSC_SYNC_CHANGE + interrupt + +The PSC sync change interrupt can fire multiple times while the link is +down. As this isn't information we make use of, it's pointless having +the interrupt enabled, so let's disable this interrupt. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -2629,9 +2629,11 @@ static int mvneta_poll(struct napi_struc + 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)) { ++ printk(KERN_DEBUG "%s: cause 0x%08x:0x%08x\n", ++ __func__, cause_rx_tx, cause_misc); + mvneta_link_change(pp); ++ } + } + + /* Release Tx descriptors */ +@@ -2948,8 +2950,7 @@ static void mvneta_start_dev(struct mvne + + 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); +@@ -3440,8 +3441,7 @@ static int mvneta_cpu_online(unsigned in + 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; +@@ -3482,8 +3482,7 @@ static int mvneta_cpu_dead(unsigned int + 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; + } |