netdev - [net: PATCH] net: mvpp2: disable link IRQ waiting for IDLE frames

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Date:   Wed, 27 Feb 2019 18:47:32 +0100
From:   Marcin Wojtas <mw@...ihalf.com>
To:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        netdev@...r.kernel.org
Cc:     davem@...emloft.net, linux@...linux.org.uk,
        antoine.tenart@...tlin.com, thomas.petazzoni@...tlin.com,
        gregory.clement@...tlin.com, stefanc@...vell.com,
        nadavh@...vell.com, mw@...ihalf.com, jaz@...ihalf.com,
        tn@...ihalf.com
Subject: [net: PATCH] net: mvpp2: disable link IRQ waiting for IDLE frames

Current version of the driver was configuring XLG MAC
in a way to wait 3 IDLE frames before allowing for the
link-up interrupt to be triggered. This resulted in an
issue, preventing to detect the link change during RX
traffic on the interface. Fix that.

Fixes: 4bb043262878 ("net: mvpp2: phylink support")
Signed-off-by: Marcin Wojtas <mw@...ihalf.com>
---
 drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
index 16066c2..f1378f9 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
@@ -4532,8 +4532,7 @@ static void mvpp2_xlg_config(struct mvpp2_port *port, unsigned int mode,
 		ctrl0 |= MVPP22_XLG_CTRL0_RX_FLOW_CTRL_EN;
 
 	ctrl4 &= ~MVPP22_XLG_CTRL4_MACMODSELECT_GMAC;
-	ctrl4 |= MVPP22_XLG_CTRL4_FWD_FC | MVPP22_XLG_CTRL4_FWD_PFC |
-		 MVPP22_XLG_CTRL4_EN_IDLE_CHECK;
+	ctrl4 |= MVPP22_XLG_CTRL4_FWD_FC | MVPP22_XLG_CTRL4_FWD_PFC;
 
 	writel(ctrl0, port->base + MVPP22_XLG_CTRL0_REG);
 	writel(ctrl4, port->base + MVPP22_XLG_CTRL4_REG);
-- 
2.7.4