linux-kernel - Re: [PATCH net 2/2] net: micrel: Fix set/get PHC time for lan8814

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Message-ID: <20240115112255.53d5bb85@device-28.home>
Date: Mon, 15 Jan 2024 11:22:55 +0100
From: Maxime Chevallier <maxime.chevallier@...tlin.com>
To: Horatiu Vultur <horatiu.vultur@...rochip.com>
Cc: <andrew@...n.ch>, <hkallweit1@...il.com>, <linux@...linux.org.uk>,
 <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
 <pabeni@...hat.com>, <richardcochran@...il.com>,
 <Divya.Koppera@...rochip.com>, <netdev@...r.kernel.org>,
 <linux-kernel@...r.kernel.org>, <UNGLinuxDriver@...rochip.com>
Subject: Re: [PATCH net 2/2] net: micrel: Fix set/get PHC time for lan8814

Hello Horatiu,

On Sat, 13 Jan 2024 14:15:21 +0100
Horatiu Vultur <horatiu.vultur@...rochip.com> wrote:

> When setting or getting PHC time, the higher bits of the second time (>32
> bits) they were ignored. Meaning that setting some time in the future like
> year 2150, it was failing to set this.
> 
> The issue can be reproduced like this:
> 
>  # phc_ctl /dev/ptp1 set 10000000000
>  phc_ctl[118.619]: set clock time to 4294967295.000000000 or Sun Feb  7 06:28:15 2106
> 
>  # phc_ctl /dev/ptp1 get
>  phc_ctl[120.858]: clock time is 1.238620924 or Thu Jan  1 00:00:01 1970
> 
> Fixes: ece19502834d ("net: phy: micrel: 1588 support for LAN8814 phy")
> Signed-off-by: Horatiu Vultur <horatiu.vultur@...rochip.com>

This looks fine to me,

Reviewed-by: Maxime Chevallier <maxime.chevallier@...tlin.com>

Thanks,

Maxime