netdev - [PATCH net-next 8/9] net: dsa: ksz: implement .support

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Message-Id: <E1tL14Z-006cZs-6o@rmk-PC.armlinux.org.uk>
Date: Tue, 10 Dec 2024 14:18:47 +0000
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>
Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	"Ar__n__ __NAL" <arinc.unal@...nc9.com>,
	Daniel Golle <daniel@...rotopia.org>,
	"David S. Miller" <davem@...emloft.net>,
	DENG Qingfang <dqfext@...il.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	Jakub Kicinski <kuba@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org,
	Matthias Brugger <matthias.bgg@...il.com>,
	netdev@...r.kernel.org,
	Paolo Abeni <pabeni@...hat.com>,
	Sean Wang <sean.wang@...iatek.com>,
	Simon Horman <horms@...nel.org>,
	UNGLinuxDriver@...rochip.com,
	Vladimir Oltean <olteanv@...il.com>,
	Woojung Huh <woojung.huh@...rochip.com>
Subject: [PATCH net-next 8/9] net: dsa: ksz: implement .support_eee() method

Implement the .support_eee() method by reusing the ksz_validate_eee()
method as a template, renaming the function, changing the return type
and values, and removing it from the ksz_set_mac_eee() and
ksz_get_mac_eee() methods.

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 drivers/net/dsa/microchip/ksz_common.c | 20 +++++---------------
 1 file changed, 5 insertions(+), 15 deletions(-)

diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index f5822c57be32..94f9aa983ff6 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -3454,12 +3454,12 @@ static int ksz_max_mtu(struct dsa_switch *ds, int port)
 	return -EOPNOTSUPP;
 }
 
-static int ksz_validate_eee(struct dsa_switch *ds, int port)
+static bool ksz_support_eee(struct dsa_switch *ds, int port)
 {
 	struct ksz_device *dev = ds->priv;
 
 	if (!dev->info->internal_phy[port])
-		return -EOPNOTSUPP;
+		return false;
 
 	switch (dev->chip_id) {
 	case KSZ8563_CHIP_ID:
@@ -3471,21 +3471,15 @@ static int ksz_validate_eee(struct dsa_switch *ds, int port)
 	case KSZ9896_CHIP_ID:
 	case KSZ9897_CHIP_ID:
 	case LAN9646_CHIP_ID:
-		return 0;
+		return true;
 	}
 
-	return -EOPNOTSUPP;
+	return false;
 }
 
 static int ksz_get_mac_eee(struct dsa_switch *ds, int port,
 			   struct ethtool_keee *e)
 {
-	int ret;
-
-	ret = ksz_validate_eee(ds, port);
-	if (ret)
-		return ret;
-
 	/* There is no documented control of Tx LPI configuration. */
 	e->tx_lpi_enabled = true;
 
@@ -3501,11 +3495,6 @@ static int ksz_set_mac_eee(struct dsa_switch *ds, int port,
 			   struct ethtool_keee *e)
 {
 	struct ksz_device *dev = ds->priv;
-	int ret;
-
-	ret = ksz_validate_eee(ds, port);
-	if (ret)
-		return ret;
 
 	if (!e->tx_lpi_enabled) {
 		dev_err(dev->dev, "Disabling EEE Tx LPI is not supported\n");
@@ -4651,6 +4640,7 @@ static const struct dsa_switch_ops ksz_switch_ops = {
 	.cls_flower_add		= ksz_cls_flower_add,
 	.cls_flower_del		= ksz_cls_flower_del,
 	.port_setup_tc		= ksz_setup_tc,
+	.support_eee		= ksz_support_eee,
 	.get_mac_eee		= ksz_get_mac_eee,
 	.set_mac_eee		= ksz_set_mac_eee,
 	.port_get_default_prio	= ksz_port_get_default_prio,
-- 
2.30.2