linux-kernel - Re: [PATCH 1/2] net: stmmac: retain PTP-clock at hwtstamp

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Message-ID: <20201217095943.6b17db4f@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Thu, 17 Dec 2020 09:59:43 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Ahmad Fatoum <a.fatoum@...gutronix.de>
Cc:     Holger Assmann <h.assmann@...gutronix.de>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S. Miller" <davem@...emloft.net>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Rayagond Kokatanur <rayagond@...avyalabs.com>,
        kernel@...gutronix.de, Michael Olbrich <m.olbrich@...gutronix.de>,
        Jose Abreu <Jose.Abreu@...opsys.com>, netdev@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Richard Cochran <richardcochran@...il.com>
Subject: Re: [PATCH 1/2] net: stmmac: retain PTP-clock at hwtstamp_set

On Thu, 17 Dec 2020 09:25:48 +0100 Ahmad Fatoum wrote:
> On 17.12.20 02:13, Jakub Kicinski wrote:
> >> +			netdev_warn(priv->dev, "HW Timestamping init failed: %pe\n",
> >> +					ERR_PTR(ret));  
> > 
> > why convert to ERR_PTR and use %pe and not just %d?  
> 
> To get a symbolic error name if support is compiled in (note the `e' after %p).

Cool, GTK. Kind of weird we there is no equivalent int decorator, tho.
Do you happen to know why?