From: Markus Reichl <m.reichl@xxxxxxxxxxxxx> commit 0bf3885324a8599e3af4c7379b8d4f621c9bbffa upstream. On boards with LAN9514 and no preconfigured MAC address we don't get an ip address from DHCP after commit a049a30fc27c ("net: usb: Correct PHY handling of smsc95xx") anymore. Adding an explicit reset before starting the phy fixes the issue. [1] https://lore.kernel.org/netdev/199eebbd6b97f52b9119c9fa4fd8504f8a34de18.camel@xxxxxxxxxxxxx/ From: Gabriel Hojda <ghojda@xxxxxxxxx> Fixes: a049a30fc27c ("net: usb: Correct PHY handling of smsc95xx") Signed-off-by: Gabriel Hojda <ghojda@xxxxxxxxx> Signed-off-by: Markus Reichl <m.reichl@xxxxxxxxxxxxx> Tested-by: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Cc: Fabio Estevam <festevam@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/net/usb/smsc95xx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/net/usb/smsc95xx.c +++ b/drivers/net/usb/smsc95xx.c @@ -1961,7 +1961,8 @@ static const struct driver_info smsc95xx .bind = smsc95xx_bind, .unbind = smsc95xx_unbind, .link_reset = smsc95xx_link_reset, - .reset = smsc95xx_start_phy, + .reset = smsc95xx_reset, + .check_connect = smsc95xx_start_phy, .stop = smsc95xx_stop, .rx_fixup = smsc95xx_rx_fixup, .tx_fixup = smsc95xx_tx_fixup, Patches currently in stable-queue which might be from m.reichl@xxxxxxxxxxxxx are queue-5.10/net-usb-correct-reset-handling-of-smsc95xx.patch