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

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Message-ID: <20230228184303.GA4098978@roeck-us.net>
Date:   Tue, 28 Feb 2023 10:43:03 -0800
From:   Guenter Roeck <linux@...ck-us.net>
To:     Oleksij Rempel <o.rempel@...gutronix.de>
Cc:     Woojung Huh <woojung.huh@...rochip.com>,
        UNGLinuxDriver@...rochip.com, Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, Wei Fang <wei.fang@....com>,
        Heiner Kallweit <hkallweit1@...il.com>, kernel@...gutronix.de,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        Arun.Ramadoss@...rochip.com, intel-wired-lan@...ts.osuosl.org,
        regressions@...ts.linux.dev
Subject: Re: [PATCH net-next v8 6/9] net: phy: c22: migrate to
 genphy_c45_write_eee_adv()

Letting regzbot know about the fix:

#regzbot fixed-by: 972074ea8840

On Fri, Feb 24, 2023 at 09:20:04AM -0800, Guenter Roeck wrote:
> Copying regzbot.
>   
> #regzbot ^introduced 9b01c885be36
> #regzbot title Network interface initialization failures on xtensa, arm:cubieboard
> #regzbot ignore-activity
> 
> On Thu, Feb 23, 2023 at 08:16:06PM -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.
> > 
> > Guenter