Re: [PATCH net-next] net: stmmac: fix failed to suspend if phy based WOL is enabled

From: David Miller
Date: Mon Aug 03 2020 - 21:00:03 EST

From: Jisheng Zhang <Jisheng.Zhang@xxxxxxxxxxxxx>
Date: Mon, 3 Aug 2020 16:56:47 +0800

> With the latest net-next tree, if test suspend/resume after enabling
> WOL, we get error as below:
> [ 487.086365] dpm_run_callback(): mdio_bus_suspend+0x0/0x30 returns -16
> [ 487.086375] PM: Device stmmac-0:00 failed to suspend: error -16
> -16 means -EBUSY, this is because I didn't enable wakeup of the correct
> device when implementing phy based WOL feature. To be honest, I caught
> the issue when implementing phy based WOL and then fix it locally, but
> forgot to amend the phy based wol patch. Today, I found the issue by
> testing net-next tree.
> Signed-off-by: Jisheng Zhang <Jisheng.Zhang@xxxxxxxxxxxxx>