linux-kernel - Re: [PATCH net-next v8 6/9] net: phy: c22: migrate to genphy_c45_write_eee

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Date:   Fri, 24 Feb 2023 08:00:57 -0800
From:   Guenter Roeck <linux@...ck-us.net>
To:     Oleksij Rempel <o.rempel@...gutronix.de>
Cc:     Woojung Huh <woojung.huh@...rochip.com>,
        Andrew Lunn <andrew@...n.ch>, Arun.Ramadoss@...rochip.com,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, UNGLinuxDriver@...rochip.com,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>, Wei Fang <wei.fang@....com>,
        kernel@...gutronix.de, intel-wired-lan@...ts.osuosl.org,
        Jakub Kicinski <kuba@...nel.org>,
        Vladimir Oltean <olteanv@...il.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>
Subject: Re: [PATCH net-next v8 6/9] net: phy: c22: migrate to
 genphy_c45_write_eee_adv()

On 2/23/23 20:53, Oleksij Rempel wrote:
> Hallo Guenter,
> 
> On Thu, Feb 23, 2023 at 08:16:04PM -0800, Guenter Roeck wrote:
>> On Thu, Feb 23, 2023 at 07:55:55PM -0800, Guenter Roeck wrote:
>>> On Sat, Feb 11, 2023 at 08:41:10AM +0100, Oleksij Rempel wrote:
>>>> Migrate from genphy_config_eee_advert() to genphy_c45_write_eee_adv().
>>>>
>>>> It should work as before except write operation to the EEE adv registers
>>>> will be done only if some EEE abilities was detected.
>>>>
>>>> If some driver will have a regression, related driver should provide own
>>>> .get_features callback. See micrel.c:ksz9477_get_features() as example.
>>>>
>>>> Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
>>>> Reviewed-by: Andrew Lunn <andrew@...n.ch>
>>>
>>> This patch causes network interface failures with all my xtensa qemu
>>> emulations. Reverting it fixes the problem. Bisect log is attached
>>> for reference.
>>>
>>
>> Also affected are arm:cubieboard emulations, with same symptom.
>> arm:bletchley-bmc emulations crash. In both cases, reverting this patch
>> fixes the problem.
> 
> Please test this fixes:
> https://lore.kernel.org/all/167715661799.11159.2057121677394149658.git-patchwork-notify@kernel.org/
> 

Applied and tested

77c39beb5efa (HEAD -> master) net: phy: c45: genphy_c45_ethtool_set_eee: validate EEE link modes
068a35a8d62c net: phy: do not force EEE support
66d358a5fac6 net: phy: c45: add genphy_c45_an_config_eee_aneg() function
ecea1bf8b04c net: phy: c45: use "supported_eee" instead of supported for access validation

on top of

d2980d8d8265 (upstream/master, origin/master, origin/HEAD, local/master) Merge tag 'mm-nonmm-stable-2023-02-20-15-29' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

No change for xtensa and arm:cubieboard; network interfaces still fail.
On the plus side, the failures with arm:bletchley-bmc (warnings, crash)
are longer seen.

Guenter