linux-kernel - [PATCH 1/2] net: dsa: mv88e6xxx: Don't force link when using in-band-status

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Message-Id: <20201013021858.20530-2-chris.packham@alliedtelesis.co.nz>
Date:   Tue, 13 Oct 2020 15:18:57 +1300
From:   Chris Packham <chris.packham@...iedtelesis.co.nz>
To:     andrew@...n.ch, vivien.didelot@...il.com, f.fainelli@...il.com,
        olteanv@...il.com, davem@...emloft.net, kuba@...nel.org,
        linux@...linux.org.uk
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Chris Packham <chris.packham@...iedtelesis.co.nz>
Subject: [PATCH 1/2] net: dsa: mv88e6xxx: Don't force link when using in-band-status

When a port is configured with 'managed = "in-band-status"' don't force
the link up, the switch MAC will detect the link status correctly.

Signed-off-by: Chris Packham <chris.packham@...iedtelesis.co.nz>
---
 drivers/net/dsa/mv88e6xxx/chip.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index f0dbc05e30a4..1ef392ee52c5 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -767,8 +767,11 @@ static void mv88e6xxx_mac_link_up(struct dsa_switch *ds, int port,
 				goto error;
 		}
 
-		if (ops->port_set_link)
-			err = ops->port_set_link(chip, port, LINK_FORCED_UP);
+		if (ops->port_set_link) {
+			int link = mode == MLO_AN_INBAND ? LINK_UNFORCED : LINK_FORCED_UP;
+
+			err = ops->port_set_link(chip, port, link);
+		}
 	}
 error:
 	mv88e6xxx_reg_unlock(chip);
-- 
2.28.0