netdev - RE: [PATCH net-next 0/2] ptp: safely cleanup when unregistering a PTP clock

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Message-ID:
 <PAXPR04MB85100C0C6A1F468F17ACBFF68814A@PAXPR04MB8510.eurprd04.prod.outlook.com>
Date: Tue, 16 Sep 2025 08:37:20 +0000
From: Wei Fang <wei.fang@....com>
To: Russell King <linux@...linux.org.uk>
CC: Ajay Kaher <ajay.kaher@...adcom.com>, Alexey Makhalov
	<alexey.makhalov@...adcom.com>, Andrew Lunn <andrew+netdev@...n.ch>, Richard
 Cochran <richardcochran@...il.com>, Broadcom internal kernel review list
	<bcm-kernel-feedback-list@...adcom.com>, Clark Wang <xiaoning.wang@....com>,
	"David S. Miller" <davem@...emloft.net>, David Woodhouse
	<dwmw2@...radead.org>, Eric Dumazet <edumazet@...gle.com>,
	"imx@...ts.linux.dev" <imx@...ts.linux.dev>, Jakub Kicinski
	<kuba@...nel.org>, Jonathan Lemon <jonathan.lemon@...il.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>, Nick Shi
	<nick.shi@...adcom.com>, Paolo Abeni <pabeni@...hat.com>, Sven Schnelle
	<svens@...ux.ibm.com>, Vadim Fedorenko <vadim.fedorenko@...ux.dev>, Vladimir
 Oltean <vladimir.oltean@....com>, "Y.B. Lu" <yangbo.lu@....com>
Subject: RE: [PATCH net-next 0/2] ptp: safely cleanup when unregistering a PTP
 clock

> This is difficult for me to test beyond build testing - on the
> Clearfog platform with Marvell PHY PTP, the ethernet PHY is the
> primary connectivity, so removing the PHY driver for an in-use
> network interface isn't possible.
> 
> On the ZII rev B platform, where the DSA switches have the TAI
> hardware and where root NFS is used, removal of the DSA switch
> module somehow forces the FEC interface _not_ connected to the DSA
> switch to lose link, causing the machine to become unresponsive
> as its root filesystem vanishes.
> 

After applying the patch, I tested the unbinding and rebinding of
the ptp_netc driver on the i.MX95 platform, I did not see any
issues, and the NETC Timer works properly after rebinding.
I cannot test the pinfunc, because ptp_netc driver does not
support it. Do you need my Tested-by tag for this patch set?