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Message-ID: <Z2JFwh94o-X7HhP4@hoboy.vegasvil.org>
Date: Tue, 17 Dec 2024 19:47:14 -0800
From: Richard Cochran <richardcochran@...il.com>
To: Jakub Kicinski <kuba@...nel.org>
Cc: Divya Koppera <divya.koppera@...rochip.com>, andrew@...n.ch,
	arun.ramadoss@...rochip.com, UNGLinuxDriver@...rochip.com,
	hkallweit1@...il.com, linux@...linux.org.uk, davem@...emloft.net,
	edumazet@...gle.com, pabeni@...hat.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, vadim.fedorenko@...ux.dev
Subject: Re: [PATCH net-next v7 2/5] net: phy: microchip_rds_ptp : Add rds
 ptp library for Microchip phys

On Tue, Dec 17, 2024 at 07:22:46PM -0800, Jakub Kicinski wrote:
> On Fri, 13 Dec 2024 17:44:00 +0530 Divya Koppera wrote:
> > +
> > +static int mchp_rds_ptp_ts_info(struct mii_timestamper *mii_ts,
> > +				struct kernel_ethtool_ts_info *info)
> > +{
> > +	struct mchp_rds_ptp_clock *clock = container_of(mii_ts,
> > +						      struct mchp_rds_ptp_clock,
> > +						      mii_ts);
> > +
> > +	info->phc_index =
> > +		clock->ptp_clock ? ptp_clock_index(clock->ptp_clock) : -1;
> 
> under what condition can the clock be NULL?

ptp_clock_register() can return PTR_ERR or null.

Thanks,
Richard

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