netdev - [PATCH net-next] net: phy: remove phy_ethtool

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Date:   Fri, 22 Nov 2019 12:37:08 +0000
From:   Russell King <rmk+kernel@...linux.org.uk>
To:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Jonathan Corbet <corbet@....net>, netdev@...r.kernel.org,
        linux-doc@...r.kernel.org
Subject: [PATCH net-next] net: phy: remove phy_ethtool_sset()

There are no users of phy_ethtool_sset() in the kernel anymore, and
as of 3c1bcc8614db ("net: ethernet: Convert phydev advertize and
supported from u32 to link mode"), the implementation is slightly
buggy - it doesn't correctly check the masked advertising mask as it
used to.

Remove it, and update the phy documentation to refer to its replacement
function.

Signed-off-by: Russell King <rmk+kernel@...linux.org.uk>
---
 Documentation/networking/phy.rst |  3 +-
 drivers/net/phy/phy.c            | 60 --------------------------------
 include/linux/phy.h              |  1 -
 3 files changed, 2 insertions(+), 62 deletions(-)

diff --git a/Documentation/networking/phy.rst b/Documentation/networking/phy.rst
index a689966bc4be..cda1c0a0492a 100644
--- a/Documentation/networking/phy.rst
+++ b/Documentation/networking/phy.rst
@@ -352,7 +352,8 @@ Fills the phydev structure with up-to-date information about the current
 settings in the PHY.
 ::
 
- int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd);
+ int phy_ethtool_ksettings_set(struct phy_device *phydev,
+                               const struct ethtool_link_ksettings *cmd);
 
 Ethtool convenience functions.
 ::
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index ef6096dc7182..9e431b9f9d87 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -253,66 +253,6 @@ static void phy_sanitize_settings(struct phy_device *phydev)
 	}
 }
 
-/**
- * phy_ethtool_sset - generic ethtool sset function, handles all the details
- * @phydev: target phy_device struct
- * @cmd: ethtool_cmd
- *
- * A few notes about parameter checking:
- *
- * - We don't set port or transceiver, so we don't care what they
- *   were set to.
- * - phy_start_aneg() will make sure forced settings are sane, and
- *   choose the next best ones from the ones selected, so we don't
- *   care if ethtool tries to give us bad values.
- */
-int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd)
-{
-	__ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);
-	u32 speed = ethtool_cmd_speed(cmd);
-
-	if (cmd->phy_address != phydev->mdio.addr)
-		return -EINVAL;
-
-	/* We make sure that we don't pass unsupported values in to the PHY */
-	ethtool_convert_legacy_u32_to_link_mode(advertising, cmd->advertising);
-	linkmode_and(advertising, advertising, phydev->supported);
-
-	/* Verify the settings we care about. */
-	if (cmd->autoneg != AUTONEG_ENABLE && cmd->autoneg != AUTONEG_DISABLE)
-		return -EINVAL;
-
-	if (cmd->autoneg == AUTONEG_ENABLE && cmd->advertising == 0)
-		return -EINVAL;
-
-	if (cmd->autoneg == AUTONEG_DISABLE &&
-	    ((speed != SPEED_1000 &&
-	      speed != SPEED_100 &&
-	      speed != SPEED_10) ||
-	     (cmd->duplex != DUPLEX_HALF &&
-	      cmd->duplex != DUPLEX_FULL)))
-		return -EINVAL;
-
-	phydev->autoneg = cmd->autoneg;
-
-	phydev->speed = speed;
-
-	linkmode_copy(phydev->advertising, advertising);
-
-	linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
-			 phydev->advertising, AUTONEG_ENABLE == cmd->autoneg);
-
-	phydev->duplex = cmd->duplex;
-
-	phydev->mdix_ctrl = cmd->eth_tp_mdix_ctrl;
-
-	/* Restart the PHY */
-	phy_start_aneg(phydev);
-
-	return 0;
-}
-EXPORT_SYMBOL(phy_ethtool_sset);
-
 int phy_ethtool_ksettings_set(struct phy_device *phydev,
 			      const struct ethtool_link_ksettings *cmd)
 {
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 70173861e1a2..f172ff22c177 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -1158,7 +1158,6 @@ void phy_queue_state_machine(struct phy_device *phydev, unsigned long jiffies);
 void phy_mac_interrupt(struct phy_device *phydev);
 void phy_start_machine(struct phy_device *phydev);
 void phy_stop_machine(struct phy_device *phydev);
-int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd);
 void phy_ethtool_ksettings_get(struct phy_device *phydev,
 			       struct ethtool_link_ksettings *cmd);
 int phy_ethtool_ksettings_set(struct phy_device *phydev,
-- 
2.20.1