netdev - RE: [PATCH v3 1/3] net: phy: add EXPORT_SYMBOL to phy_disable

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Date:   Wed, 21 Dec 2022 18:03:22 +0000
From:   <Yuiko.Oshino@...rochip.com>
To:     <Woojung.Huh@...rochip.com>, <andrew@...n.ch>,
        <enguerrand.de-ribaucourt@...oirfairelinux.com>
CC:     <hkallweit1@...il.com>, <netdev@...r.kernel.org>,
        <pabeni@...hat.com>, <davem@...emloft.net>,
        <UNGLinuxDriver@...rochip.com>, <linux@...linux.org.uk>
Subject: RE: [PATCH v3 1/3] net: phy: add EXPORT_SYMBOL to
 phy_disable_interrupts()

Hi Andrew and all,

Microchip team can review the drivers and test affected devices next month.
We will submit additional patches if necessary.

Thank you and best regards,
Yuiko

>-----Original Message-----
>From: Woojung Huh - C21699 <Woojung.Huh@...rochip.com>
>Sent: Tuesday, December 20, 2022 2:43 PM
>To: Andrew Lunn <andrew@...n.ch>; Enguerrand de Ribaucourt <enguerrand.de-
>ribaucourt@...oirfairelinux.com>
>Cc: Heiner Kallweit <hkallweit1@...il.com>; netdev <netdev@...r.kernel.org>;
>Paolo Abeni <pabeni@...hat.com>; davem <davem@...emloft.net>;
>UNGLinuxDriver <UNGLinuxDriver@...rochip.com>; Russell King - ARM Linux
><linux@...linux.org.uk>
>Subject: RE: [PATCH v3 1/3] net: phy: add EXPORT_SYMBOL to
>phy_disable_interrupts()
>
>Hi Andrew,
>
>Let me check with our team.
>
>Best regards,
>Woojung
>
>> -----Original Message-----
>> From: Andrew Lunn <andrew@...n.ch>
>> Sent: Tuesday, December 20, 2022 11:55 AM
>> To: Enguerrand de Ribaucourt <enguerrand.de-
>> ribaucourt@...oirfairelinux.com>
>> Cc: Heiner Kallweit <hkallweit1@...il.com>; netdev
>> <netdev@...r.kernel.org>; Paolo Abeni <pabeni@...hat.com>; Woojung Huh
>> - C21699 <Woojung.Huh@...rochip.com>; davem <davem@...emloft.net>;
>> UNGLinuxDriver <UNGLinuxDriver@...rochip.com>; Russell King - ARM
>> Linux <linux@...linux.org.uk>
>> Subject: Re: [PATCH v3 1/3] net: phy: add EXPORT_SYMBOL to
>> phy_disable_interrupts()
>>
>> EXTERNAL EMAIL: Do not click links or open attachments unless you know
>> the content is safe
>>
>> On Tue, Dec 20, 2022 at 10:48:25AM -0500, Enguerrand de Ribaucourt wrote:
>> > > From: "Heiner Kallweit" <hkallweit1@...il.com>
>> > > To: "Enguerrand de Ribaucourt" <enguerrand.de-
>> ribaucourt@...oirfairelinux.com>
>> > > Cc: "netdev" <netdev@...r.kernel.org>, "Paolo Abeni"
>> <pabeni@...hat.com>, "woojung huh" <woojung.huh@...rochip.com>,
>> > > "davem" <davem@...emloft.net>, "UNGLinuxDriver"
>> <UNGLinuxDriver@...rochip.com>, "Andrew Lunn" <andrew@...n.ch>,
>> > > "Russell King - ARM Linux" <linux@...linux.org.uk>
>> > > Sent: Tuesday, December 20, 2022 4:19:40 PM
>> > > Subject: Re: [PATCH v3 1/3] net: phy: add EXPORT_SYMBOL to
>> phy_disable_interrupts()
>> > My proposed approach would be to copy the original workaround
>> > actions within link_change_notify():
>> >  1. disable interrupts
>> >  2. reset speed
>> >  3. enable interrupts
>> >
>> > However, I don't have access to the LAN8835 to test if this would
>> > work. I
>> also
>> > don't have knowledge about which other Microchip PHYs could be
>> impacted. Maybe
>> > there is an active Microchip developer we could communicate with to
>> > find
>> out?
>>
>> Woojung Huh added this code, and he sometimes contributes here.
>>
>> Woojung, do you still have access to the hardware?
>>
>>          Andrew