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Subject[PATCH AUTOSEL 4.19 10/68] net: mvpp2: Don't check for 3 consecutive Idle frames for 10G links
Date
From: Maxime Chevallier <maxime.chevallier@bootlin.com>

[ Upstream commit bba18318e7d1d5c8b0bbafd65010a0cee3c65608 ]

PPv2's XLGMAC can wait for 3 idle frames before triggering a link up
event. This can cause the link to be stuck low when there's traffic on
the interface, so disable this feature.

Fixes: 4bb043262878 ("net: mvpp2: phylink support")
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
index 6455511457ca3..9b608d23ff7ee 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
@@ -4412,9 +4412,9 @@ static void mvpp2_xlg_config(struct mvpp2_port *port, unsigned int mode,
if (state->pause & MLO_PAUSE_RX)
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_MACMODSELECT_GMAC |
+ 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);
--
2.20.1
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