linux-kernel - Re: [PATCH net-next v3 4/4] net: phy: dp83td510: Add support for the DP83TD510 Ethernet PHY

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Date:   Fri, 30 Oct 2020 16:03:30 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Dan Murphy <dmurphy@...com>
Cc:     <davem@...emloft.net>, <andrew@...n.ch>, <f.fainelli@...il.com>,
        <hkallweit1@...il.com>, <robh@...nel.org>,
        <devicetree@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-next v3 4/4] net: phy: dp83td510: Add support for
 the DP83TD510 Ethernet PHY

On Fri, 30 Oct 2020 12:29:50 -0500 Dan Murphy wrote:
> The DP83TD510E is an ultra-low power Ethernet physical layer transceiver
> that supports 10M single pair cable.
> 
> The device supports both 2.4-V p2p and 1-V p2p output voltage as defined
> by IEEE 802.3cg 10Base-T1L specfications. These modes can be forced via
> the device tree or the device is defaulted to auto negotiation to
> determine the proper p2p voltage.
> 
> Signed-off-by: Dan Murphy <dmurphy@...com>

drivers/net/phy/dp83td510.c:70:11: warning: symbol 'dp83td510_feature_array' was not declared. Should it be static?


Also this:

WARNING: ENOTSUPP is not a SUSV4 error code, prefer EOPNOTSUPP
#429: FILE: drivers/net/phy/dp83td510.c:371:
+		return -ENOTSUPP;

WARNING: ENOTSUPP is not a SUSV4 error code, prefer EOPNOTSUPP
#524: FILE: drivers/net/phy/dp83td510.c:466:
+		return -ENOTSUPP;

ERROR: space required before the open parenthesis '('
#580: FILE: drivers/net/phy/dp83td510.c:522:
+		if(phydev->autoneg) {

ERROR: space required before the open parenthesis '('
#588: FILE: drivers/net/phy/dp83td510.c:530:
+		if(phydev->autoneg) {


And please try to wrap the code on 80 chars on the non trivial lines:

WARNING: line length of 88 exceeds 80 columns
#458: FILE: drivers/net/phy/dp83td510.c:400:
+	mst_slave_cfg = phy_read_mmd(phydev, DP83TD510_PMD_DEVADDR, DP83TD510_PMD_CTRL);


WARNING: line length of 91 exceeds 80 columns
#505: FILE: drivers/net/phy/dp83td510.c:447:
+			linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->supported);

WARNING: line length of 93 exceeds 80 columns
#507: FILE: drivers/net/phy/dp83td510.c:449:
+			linkmode_clear_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->supported);

WARNING: line length of 91 exceeds 80 columns
#514: FILE: drivers/net/phy/dp83td510.c:456:
+			linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->supported);

WARNING: line length of 93 exceeds 80 columns
#516: FILE: drivers/net/phy/dp83td510.c:458:
+			linkmode_clear_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->supported);


WARNING: line length of 92 exceeds 80 columns
#560: FILE: drivers/net/phy/dp83td510.c:502:
+					       DP83TD510_MAC_CFG_1, dp83td510->rgmii_delay);

WARNING: line length of 88 exceeds 80 columns
#574: FILE: drivers/net/phy/dp83td510.c:516:
+	mst_slave_cfg = phy_read_mmd(phydev, DP83TD510_PMD_DEVADDR, DP83TD510_PMD_CTRL);

WARNING: line length of 84 exceeds 80 columns
#695: FILE: drivers/net/phy/dp83td510.c:637:
+	dp83td510 = devm_kzalloc(&phydev->mdio.dev, sizeof(*dp83td510), GFP_KERNEL);