[PATCH] smsc95xx: fix stalled rx after link change
From: Aaro Koskinen <aaro.koskinen@iki.fi>
Date: 2021-09-23 22:16:26
Also in:
linux-usb, lkml
Subsystem:
networking drivers, the rest, usb networking drivers, usb smsc95xx ethernet driver · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, Steve Glendinning
After commit 05b35e7eb9a1 ("smsc95xx: add phylib support"), link changes
are no longer propagated to usbnet. As a result, rx URB allocation won't
happen until there is a packet sent out first (this might never happen,
e.g. running just ssh server with a static IP). Fix by triggering usbnet
EVENT_LINK_CHANGE.
Fixes: 05b35e7eb9a1 ("smsc95xx: add phylib support")
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
---
drivers/net/usb/smsc95xx.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index 7d953974eb9b..26b1bd8e845b 100644
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c@@ -1178,7 +1178,10 @@ static void smsc95xx_unbind(struct usbnet *dev, struct usb_interface *intf) static void smsc95xx_handle_link_change(struct net_device *net) { + struct usbnet *dev = netdev_priv(net); + phy_print_status(net->phydev); + usbnet_defer_kevent(dev, EVENT_LINK_CHANGE); } static int smsc95xx_start_phy(struct usbnet *dev)
--
2.17.0