From: Florian Fainelli <florian.fainelli@broadcom.com>
To: Nicolai Buchwitz <nb@tipi-net.de>, netdev-bot+sashiko@kernel.org
Cc: opendmb@gmail.com, bcm-kernel-feedback-list@broadcom.com,
andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@kernel.org,
kuba@kernel.org, pabeni@redhat.com, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, f.fainelli@gmail.com,
justin.chen@broadcom.com
Subject: Re: [PATCH net v2 1/2] net: bcmgenet: recover from a failed resume
Date: Tue, 20 Oct 2026 08:43:40 -0700 [thread overview]
Message-ID: <a111e15d-9bfa-4b38-a52e-ffa1d305fd0a@broadcom.com> (raw)
In-Reply-To: <a033b1e2dd424000dc5669f88bed0c89@tipi-net.de>
On 10/20/26 07:16, Nicolai Buchwitz wrote:
[snip]
>> [Severity: Medium]
>>
>> With WoL not in use, can this early return leave an external PHY powered
>> for the whole sleep?
>
> Yes, but IMHO also pre-existing: phy_init_hw() in the failed resume powers
> it up and it isn't started again. Before this patch suspend hung instead.
> Not leaving the half state behind is arguably a better way.
>
>> [...]
>
> I really need to find a WOL capable genet board, so I can test these
> code paths too ....
It should be somehow possible to exercise that code path on a CM4 by
having the system enter the "freeze" sleep state and have GENET
configured for WoL. We can discuss offline how to get there if you are
having issues with that.
--
Florian
next prev parent reply other threads:[~2026-10-20 15:43 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-19 9:52 [PATCH net v2 0/2] net: bcmgenet: fixes for a failed resume and the ring rebuild Nicolai Buchwitz
2026-10-19 9:52 ` [PATCH net v2 1/2] net: bcmgenet: recover from a failed resume Nicolai Buchwitz
2026-10-20 12:55 ` netdev-bot+sashiko
2026-10-20 14:16 ` Nicolai Buchwitz
2026-10-20 15:43 ` Florian Fainelli [this message]
2026-10-19 9:52 ` [PATCH net v2 2/2] net: bcmgenet: restore the Tx coalescing setting when the rings are rebuilt Nicolai Buchwitz
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