[PATCH 5.10 27/30] net: usb: Correct reset handling of smsc95xx

Greg Kroah-Hartman
2022-03-21T14:11:36Z

From: Markus Reichl <m.reichl@fivetechno.de>

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@collabora.com/

From: Gabriel Hojda <ghojda@yo2urs.ro>
Fixes: a049a30fc27c ("net: usb: Correct PHY handling of smsc95xx")
Signed-off-by: Gabriel Hojda <ghojda@yo2urs.ro>
Signed-off-by: Markus Reichl <m.reichl@fivetechno.de>
Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
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,