netdev - Re: phy: micrel.c: Support ksz9031 energy-detect power-down mode

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAJGZr0Je6ASHSFRpn6ULwWc3beZWEhYdDRRBFJrn2Yy0zWh_FA@mail.gmail.com>
Date:   Tue, 27 Feb 2018 17:09:45 +0300
From:   Maxim Uvarov <muvarov@...il.com>
To:     netdev <netdev@...r.kernel.org>
Cc:     Andrew Lunn <andrew@...n.ch>, David Miller <davem@...emloft.net>,
        Florian Fainelli <f.fainelli@...il.com>
Subject: Re: phy: micrel.c: Support ksz9031 energy-detect power-down mode

CC netdev

2018-02-27 13:12 GMT+03:00 Maxim Uvarov <muvarov@...il.com>:
> It migth be reason to reconsider of unconditionally enable power-down mode.
> v1 of patch and code here:
> https://lkml.org/lkml/2016/10/3/199
>
> I see that 9031 just lock ups with start from -40C just after
> swtiching to power save mode. And any soft reset do not work. Chip is
> not visible on mdio bus completely and only physycal power cycle
> restores operation.  Temperature is acceptable for specifcication.
>
> I think it's better to not touch defaults in mainline linux-kernel. Or
> at least make all new features optional.
>
> --
> Best regards,
> Maxim Uvarov