netdev - [PATCH net-next 10/11] net: phy: marvell: use phy_modify

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Message-Id: <E1ihD4l-0001zP-48@rmk-PC.armlinux.org.uk>
Date:   Tue, 17 Dec 2019 13:39:47 +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>, netdev@...r.kernel.org
Subject: [PATCH net-next 10/11] net: phy: marvell: use phy_modify_changed()

Use phy_modify_changed() to change the fiber advertisement register
rather than open coding this functionality.

Signed-off-by: Russell King <rmk+kernel@...linux.org.uk>
---
 drivers/net/phy/marvell.c | 26 ++++++++++----------------
 1 file changed, 10 insertions(+), 16 deletions(-)

diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
index 2d30653ddf4b..c40d49523719 100644
--- a/drivers/net/phy/marvell.c
+++ b/drivers/net/phy/marvell.c
@@ -524,7 +524,7 @@ static int marvell_config_aneg_fiber(struct phy_device *phydev)
 {
 	int changed = 0;
 	int err;
-	int adv, oldadv;
+	u16 adv;
 
 	if (phydev->autoneg != AUTONEG_ENABLE)
 		return genphy_setup_forced(phydev);
@@ -533,23 +533,17 @@ static int marvell_config_aneg_fiber(struct phy_device *phydev)
 	linkmode_and(phydev->advertising, phydev->advertising,
 		     phydev->supported);
 
-	/* Setup fiber advertisement */
-	adv = phy_read(phydev, MII_ADVERTISE);
-	if (adv < 0)
-		return adv;
-
-	oldadv = adv;
-	adv &= ~(ADVERTISE_1000XHALF | ADVERTISE_1000XFULL |
-		 ADVERTISE_1000XPAUSE | ADVERTISE_1000XPSE_ASYM);
-	adv |= linkmode_adv_to_fiber_adv_t(phydev->advertising);
-
-	if (adv != oldadv) {
-		err = phy_write(phydev, MII_ADVERTISE, adv);
-		if (err < 0)
-			return err;
+	adv = linkmode_adv_to_fiber_adv_t(phydev->advertising);
 
+	/* Setup fiber advertisement */
+	err = phy_modify_changed(phydev, MII_ADVERTISE,
+				 ADVERTISE_1000XHALF | ADVERTISE_1000XFULL |
+				 ADVERTISE_1000XPAUSE | ADVERTISE_1000XPSE_ASYM,
+				 adv);
+	if (err < 0)
+		return err;
+	if (err > 0)
 		changed = 1;
-	}
 
 	if (changed == 0) {
 		/* Advertisement hasn't changed, but maybe aneg was never on to
-- 
2.20.1