From:   Klaus Kudielka <klaus.kudielka@gmail.com>
To:     Andrew Lunn <andrew@lunn.ch>
Cc:     Florian Fainelli <f.fainelli@gmail.com>,
        Vladimir Oltean <olteanv@gmail.com>,
        "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        Richard Cochran <richardcochran@gmail.com>,
        netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
        Klaus Kudielka <klaus.kudielka@gmail.com>
Subject: [PATCH net-next v3 4/4] net: dsa: mv88e6xxx: mask apparently non-existing phys during probing
Date:   Tue, 14 Mar 2023 19:26:59 +0100
Message-Id: <20230314182659.63686-5-klaus.kudielka@gmail.com>
In-Reply-To: <20230314182659.63686-1-klaus.kudielka@gmail.com>
References: <20230314182659.63686-1-klaus.kudielka@gmail.com>
MIME-Version: 1.0
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To avoid excessive mdio bus transactions during probing, mask all phy
addresses that do not exist (there is a 1:1 mapping between switch port
number and phy address).

Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Klaus Kudielka <klaus.kudielka@gmail.com>
---
v2: Patch is new
v3: No change

 drivers/net/dsa/mv88e6xxx/chip.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 29b0f3bb1c..c52798d9ce 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -3797,6 +3797,7 @@ static int mv88e6xxx_mdio_register(struct mv88e6xxx_chip *chip,
 	bus->read_c45 = mv88e6xxx_mdio_read_c45;
 	bus->write_c45 = mv88e6xxx_mdio_write_c45;
 	bus->parent = chip->dev;
+	bus->phy_mask = GENMASK(31, mv88e6xxx_num_ports(chip));
 
 	if (!external) {
 		err = mv88e6xxx_g2_irq_mdio_setup(chip, bus);
-- 
2.39.2