netdev - Re: [PATCH net-next v2 8/8] net: mscc: PTP Hardware Clock (PHC) support

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Date:   Mon, 8 Jul 2019 10:17:22 +0200
From:   Antoine Tenart <antoine.tenart@...tlin.com>
To:     Richard Cochran <richardcochran@...il.com>
Cc:     Antoine Tenart <antoine.tenart@...tlin.com>, davem@...emloft.net,
        alexandre.belloni@...tlin.com, UNGLinuxDriver@...rochip.com,
        ralf@...ux-mips.org, paul.burton@...s.com, jhogan@...nel.org,
        netdev@...r.kernel.org, linux-mips@...r.kernel.org,
        thomas.petazzoni@...tlin.com, allan.nielsen@...rochip.com
Subject: Re: [PATCH net-next v2 8/8] net: mscc: PTP Hardware Clock (PHC)
 support

Hi Richard,

On Fri, Jul 05, 2019 at 03:02:24PM -0700, Richard Cochran wrote:
> On Fri, Jul 05, 2019 at 09:52:13PM +0200, Antoine Tenart wrote:
> > +static irqreturn_t ocelot_ptp_rdy_irq_handler(int irq, void *arg)
> > +{
> > +	struct ocelot *ocelot = arg;
> > +
> > +	do {
> 
> > +		/* Check if a timestamp can be retrieved */
> > +		if (!(val & SYS_PTP_STATUS_PTP_MESS_VLD))
> > +			break;
> 
> As in my reply on v1, I suggest adding a sanity check on this ISR's
> infinite loop.

That's a good idea. I'll fix this in v3.

> > +	} while (true);

Thanks!
Antoine

-- 
Antoine Ténart, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com