diff mbox series

[net-next,v1,21/21] net: usb: lan78xx: Improve error handling in WoL operations

Message ID 20241203072154.2440034-22-o.rempel@pengutronix.de (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series lan78xx: Preparations for PHYlink | expand

Checks

Context Check Description
netdev/series_format fail Series longer than 15 patches
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 4 this patch: 4
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers warning 1 maintainers not CCed: linux-usb@vger.kernel.org
netdev/build_clang success Errors and warnings before: 5 this patch: 5
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 307 this patch: 307
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 22 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Oleksij Rempel Dec. 3, 2024, 7:21 a.m. UTC 
Enhance error handling in Wake-on-LAN (WoL) operations:
- Log a warning in `lan78xx_get_wol` if `lan78xx_read_reg` fails.
- Check and handle errors from `device_set_wakeup_enable` and
  `phy_ethtool_set_wol` in `lan78xx_set_wol`.
- Ensure proper cleanup with a unified error handling path.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
---
 drivers/net/usb/lan78xx.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index 0403aea1a9fa..99c19ec1cb88 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -1857,6 +1857,7 @@  static void lan78xx_get_wol(struct net_device *netdev,
 
 	ret = lan78xx_read_reg(dev, USB_CFG0, &buf);
 	if (unlikely(ret < 0)) {
+		netdev_warn(dev->net, "failed to get WoL %pe", ERR_PTR(ret));
 		wol->supported = 0;
 		wol->wolopts = 0;
 	} else {
@@ -1888,10 +1889,13 @@  static int lan78xx_set_wol(struct net_device *netdev,
 
 	pdata->wol = wol->wolopts;
 
-	device_set_wakeup_enable(&dev->udev->dev, (bool)wol->wolopts);
+	ret = device_set_wakeup_enable(&dev->udev->dev, (bool)wol->wolopts);
+	if (ret < 0)
+		goto set_wol_done;
 
-	phy_ethtool_set_wol(netdev->phydev, wol);
+	ret = phy_ethtool_set_wol(netdev->phydev, wol);
 
+set_wol_done:
 	usb_autopm_put_interface(dev->intf);
 
 	return ret;