[PATCH net 2/3] net: txgbe: keep MAC enabled for NCSI and WoL for SP devices
From: Jiawen Wu <jiawenwu@trustnetic.com>
Date: 2026-09-20 08:51:39
Subsystem:
networking drivers, the rest, wangxun ethernet driver · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, Jiawen Wu, Mengyuan Lou
The .mac_link_down() in phylink callback disable MAC TX unconditionally.
This is not suitable for devices using NCSI or WoL, where the MAC needs
to remain enbaled after the link goes down to support the corresponding
functionality.
Skip disabling MAC TX when the subsystem device ID indicates an NCSI or
WoL device. Keep the existing link-down handling for other devices.
Fixes: 08f08f9390e4 ("net: txgbe: Support phylink MAC layer")
Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
---
drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c
index dc9f24314658..3fc01e937d6b 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c@@ -182,7 +182,9 @@ static void txgbe_mac_link_down(struct phylink_config *config, { struct wx *wx = phylink_to_wx(config); - wr32m(wx, WX_MAC_TX_CFG, WX_MAC_TX_CFG_TE, 0); + if (!(((wx->subsystem_device_id & WX_NCSI_MASK) == WX_NCSI_SUP) || + ((wx->subsystem_device_id & WX_WOL_MASK) == WX_WOL_SUP))) + wr32m(wx, WX_MAC_TX_CFG, WX_MAC_TX_CFG_TE, 0); wx->speed = SPEED_UNKNOWN; if (test_bit(WX_STATE_PTP_RUNNING, wx->state))
--
2.51.0