netdev - [PATCH net-next] net: usb: replace unnecessary get_link functions with usbnet_get

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Message-ID: <20260124082217.82351-1-enelsonmoore@gmail.com>
Date: Sat, 24 Jan 2026 00:22:06 -0800
From: Ethan Nelson-Moore <enelsonmoore@...il.com>
To: netdev@...r.kernel.org,
	linux-usb@...r.kernel.org
Cc: Ethan Nelson-Moore <enelsonmoore@...il.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Peter Korsgaard <peter@...sgaard.com>,
	Oleksij Rempel <o.rempel@...gutronix.de>,
	Max Schulze <max.schulze@...ine.de>,
	Krzysztof Hałasa <khalasa@...p.pl>
Subject: [PATCH net-next] net: usb: replace unnecessary get_link functions with usbnet_get_link

usbnet_get_link calls mii_link_ok if the device has a MII defined in
its usbnet struct and no check_connect function defined there. This is
true of these drivers, so their custom get_link functions which call
mii_link_ok are useless. Remove them in favor of usbnet_get_link.

Signed-off-by: Ethan Nelson-Moore <enelsonmoore@...il.com>
---
 drivers/net/usb/asix_devices.c | 11 ++---------
 drivers/net/usb/dm9601.c       |  9 +--------
 drivers/net/usb/sr9800.c       |  9 +--------
 3 files changed, 4 insertions(+), 25 deletions(-)

diff --git a/drivers/net/usb/asix_devices.c b/drivers/net/usb/asix_devices.c
index 232bbd79a4de..c73cf52a65a8 100644
--- a/drivers/net/usb/asix_devices.c
+++ b/drivers/net/usb/asix_devices.c
@@ -97,13 +97,6 @@ static u32 asix_get_phyid(struct usbnet *dev)
 	return phy_id;
 }
 
-static u32 asix_get_link(struct net_device *net)
-{
-	struct usbnet *dev = netdev_priv(net);
-
-	return mii_link_ok(&dev->mii);
-}
-
 static int asix_ioctl (struct net_device *net, struct ifreq *rq, int cmd)
 {
 	struct usbnet *dev = netdev_priv(net);
@@ -116,7 +109,7 @@ static int asix_ioctl (struct net_device *net, struct ifreq *rq, int cmd)
    devices that may be connected at the same time. */
 static const struct ethtool_ops ax88172_ethtool_ops = {
 	.get_drvinfo		= asix_get_drvinfo,
-	.get_link		= asix_get_link,
+	.get_link		= usbnet_get_link,
 	.get_msglevel		= usbnet_get_msglevel,
 	.set_msglevel		= usbnet_set_msglevel,
 	.get_wol		= asix_get_wol,
@@ -986,7 +979,7 @@ static void ax88178_unbind(struct usbnet *dev, struct usb_interface *intf)
 
 static const struct ethtool_ops ax88178_ethtool_ops = {
 	.get_drvinfo		= asix_get_drvinfo,
-	.get_link		= asix_get_link,
+	.get_link		= usbnet_get_link,
 	.get_msglevel		= usbnet_get_msglevel,
 	.set_msglevel		= usbnet_set_msglevel,
 	.get_wol		= asix_get_wol,
diff --git a/drivers/net/usb/dm9601.c b/drivers/net/usb/dm9601.c
index 2b4716ccf0c5..5540f7ec4906 100644
--- a/drivers/net/usb/dm9601.c
+++ b/drivers/net/usb/dm9601.c
@@ -266,13 +266,6 @@ static void dm9601_get_drvinfo(struct net_device *net,
 	usbnet_get_drvinfo(net, info);
 }
 
-static u32 dm9601_get_link(struct net_device *net)
-{
-	struct usbnet *dev = netdev_priv(net);
-
-	return mii_link_ok(&dev->mii);
-}
-
 static int dm9601_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
 {
 	struct usbnet *dev = netdev_priv(net);
@@ -282,7 +275,7 @@ static int dm9601_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
 
 static const struct ethtool_ops dm9601_ethtool_ops = {
 	.get_drvinfo	= dm9601_get_drvinfo,
-	.get_link	= dm9601_get_link,
+	.get_link	= usbnet_get_link,
 	.get_msglevel	= usbnet_get_msglevel,
 	.set_msglevel	= usbnet_set_msglevel,
 	.get_eeprom_len	= dm9601_get_eeprom_len,
diff --git a/drivers/net/usb/sr9800.c b/drivers/net/usb/sr9800.c
index 57947a5590cc..ee8c6c9d3962 100644
--- a/drivers/net/usb/sr9800.c
+++ b/drivers/net/usb/sr9800.c
@@ -478,13 +478,6 @@ static void sr_get_drvinfo(struct net_device *net,
 	strscpy(info->version, DRIVER_VERSION, sizeof(info->version));
 }
 
-static u32 sr_get_link(struct net_device *net)
-{
-	struct usbnet *dev = netdev_priv(net);
-
-	return mii_link_ok(&dev->mii);
-}
-
 static int sr_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
 {
 	struct usbnet *dev = netdev_priv(net);
@@ -519,7 +512,7 @@ static int sr_set_mac_address(struct net_device *net, void *p)
 
 static const struct ethtool_ops sr9800_ethtool_ops = {
 	.get_drvinfo	= sr_get_drvinfo,
-	.get_link	= sr_get_link,
+	.get_link	= usbnet_get_link,
 	.get_msglevel	= usbnet_get_msglevel,
 	.set_msglevel	= usbnet_set_msglevel,
 	.get_wol	= sr_get_wol,
-- 
2.43.0