linux-kernel - [PATCH] net: tc35815: Fix phydev supported/advertising mask

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Date:   Sun, 26 Apr 2020 22:00:59 -0400
From:   Anthony Felice <tony.felice@...esys.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Anthony Felice <tony.felice@...esys.com>,
        Akshay Bhat <akshay.bhat@...esys.com>,
        "David S. Miller" <davem@...emloft.net>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Nathan Chancellor <natechancellor@...il.com>,
        Rob Herring <robh@...nel.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Andrew Lunn <andrew@...n.ch>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] net: tc35815: Fix phydev supported/advertising mask

Commit 3c1bcc8614db ("net: ethernet: Convert phydev advertize and
supported from u32 to link mode") updated ethernet drivers to use a
linkmode bitmap. It mistakenly dropped a bitwise negation in the
tc35815 ethernet driver on a bitmask to set the supported/advertising
flags.

Found by Anthony via code inspection, not tested as I do not have the
required hardware.

Fixes: 3c1bcc8614db ("net: ethernet: Convert phydev advertize and supported from u32 to link mode")
Signed-off-by: Anthony Felice <tony.felice@...esys.com>
Reviewed-by: Akshay Bhat <akshay.bhat@...esys.com>
---
 drivers/net/ethernet/toshiba/tc35815.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/toshiba/tc35815.c b/drivers/net/ethernet/toshiba/tc35815.c
index 3fd43d30b20d..a1066fbb93b5 100644
--- a/drivers/net/ethernet/toshiba/tc35815.c
+++ b/drivers/net/ethernet/toshiba/tc35815.c
@@ -643,7 +643,7 @@ static int tc_mii_probe(struct net_device *dev)
 		linkmode_set_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT, mask);
 		linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT, mask);
 	}
-	linkmode_and(phydev->supported, phydev->supported, mask);
+	linkmode_andnot(phydev->supported, phydev->supported, mask);
 	linkmode_copy(phydev->advertising, phydev->supported);
 
 	lp->link = 0;

base-commit: 55b2af1c23eb12663015998079992f79fdfa56c8
-- 
2.26.1