tree 88d60088f56da62fb5300f3e245cbc5b1999bb02
parent 21b5f672fb2eb1366dedc4ac9d32431146b378d3
author Florian Fainelli <f.fainelli@gmail.com> 1580934724 -0800
committer David S. Miller <davem@davemloft.net> 1580995732 +0100

net: systemport: Avoid RBUF stuck in Wake-on-LAN mode

After a number of suspend and resume cycles, it is possible for the RBUF
to be stuck in Wake-on-LAN mode, despite the MPD enable bit being
cleared which instructed the RBUF to exit that mode.

Avoid creating that problematic condition by clearing the RX_EN and
TX_EN bits in the UniMAC prior to disable the Magic Packet Detector
logic which is guaranteed to make the RBUF exit Wake-on-LAN mode.

Fixes: 83e82f4c706b ("net: systemport: add Wake-on-LAN support")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>