[SRU][F][PATCH 0/1] net: stmmac: kernel continually prints wol unbalance irq warning

[Hui Wang]

BugLink: https://bugs.launchpad.net/bugs/2095376

[Impact]

We are working on a IoT project, when we run the uc20 on the hardware,
a lot of warning calltrace will be printed out on the console.


[Fix]
Backport one patch from upstream.

[Test]
Boot the patched kernel on the machine, check dmesg, there is no
that calltrace anymore. And manually test it with 
"ethtool -s eth0 wol d", it will not introduce calltrace any longer.


[Where problems could occur]
The change only impacts the ethertool wol function on ethernet stmmac,
if it could introduce any regression, it will be on wol function of
stmmac driver, but the risk of regression is very low, and we tested
the wol with "ethtool -s eth0 wol g" and "ethtool -s eth0 wol d", the
test result is positive.


Qiang Ma (1):
  net: stmmac: ethtool: Fixed calltrace caused by unbalanced
    disable_irq_wake calls

 drivers/net/ethernet/stmicro/stmmac/stmmac.h         |  1 +
 drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c | 10 ++++++++--
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c    |  1 +
 3 files changed, 10 insertions(+), 2 deletions(-)

-- 
2.34.1