linux-kernel - [PATCH] net: usb: asix_devices: Check return value of usbnet_get

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Message-Id: <20250830103743.2118777-1-linmq006@gmail.com>
Date: Sat, 30 Aug 2025 18:37:41 +0800
From: Miaoqian Lin <linmq006@...il.com>
To: 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>,
	Max Schulze <max.schulze@...ine.de>,
	Miaoqian Lin <linmq006@...il.com>,
	Krzysztof Hałasa <khalasa@...p.pl>,
	David Hollis <dhollis@...ehollis.com>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	David Brownell <david-b@...bell.net>,
	linux-usb@...r.kernel.org,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] net: usb: asix_devices: Check return value of usbnet_get_endpoints

The code did not check the return value of usbnet_get_endpoints.
Add checks and return the error if it fails to transfer the error.

Fixes: 933a27d39e0e ("USB: asix - Add AX88178 support and many other changes")
Fixes: 2e55cc7210fe ("[PATCH] USB: usbnet (3/9) module for ASIX Ethernet adapters")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 drivers/net/usb/asix_devices.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/net/usb/asix_devices.c b/drivers/net/usb/asix_devices.c
index 9b0318fb50b5..92a5d6956cb3 100644
--- a/drivers/net/usb/asix_devices.c
+++ b/drivers/net/usb/asix_devices.c
@@ -230,7 +230,9 @@ static int ax88172_bind(struct usbnet *dev, struct usb_interface *intf)
 	int i;
 	unsigned long gpio_bits = dev->driver_info->data;
 
-	usbnet_get_endpoints(dev,intf);
+	ret = usbnet_get_endpoints(dev, intf);
+	if (ret)
+		goto out;
 
 	/* Toggle the GPIOs in a manufacturer/model specific way */
 	for (i = 2; i >= 0; i--) {
@@ -832,7 +834,9 @@ static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf)
 
 	dev->driver_priv = priv;
 
-	usbnet_get_endpoints(dev, intf);
+	ret = usbnet_get_endpoints(dev, intf);
+	if (ret)
+		return ret;
 
 	/* Maybe the boot loader passed the MAC address via device tree */
 	if (!eth_platform_get_mac_address(&dev->udev->dev, buf)) {
@@ -1256,7 +1260,9 @@ static int ax88178_bind(struct usbnet *dev, struct usb_interface *intf)
 	int ret;
 	u8 buf[ETH_ALEN] = {0};
 
-	usbnet_get_endpoints(dev,intf);
+	ret = usbnet_get_endpoints(dev, intf);
+	if (ret)
+		return ret;
 
 	/* Get the MAC address */
 	ret = asix_read_cmd(dev, AX_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, buf, 0);
@@ -1609,4 +1615,3 @@ MODULE_AUTHOR("David Hollis");
 MODULE_VERSION(DRIVER_VERSION);
 MODULE_DESCRIPTION("ASIX AX8817X based USB 2.0 Ethernet Devices");
 MODULE_LICENSE("GPL");
-
-- 
2.35.1