netdev - Re: [PATCH 1/3] net: ax88796c: ASIX AX88796C SPI Ethernet Adapter Driver

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Date:   Wed, 26 Aug 2020 09:13:14 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Łukasz Stelmach <l.stelmach@...sung.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Kukjin Kim <kgene@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-samsung-soc <linux-samsung-soc@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>
Subject: Re: [PATCH 1/3] net: ax88796c: ASIX AX88796C SPI Ethernet Adapter Driver

On Tue, Aug 25, 2020 at 8:02 PM Andrew Lunn <andrew@...n.ch> wrote:
> On Tue, Aug 25, 2020 at 07:03:09PM +0200, Łukasz Stelmach wrote:
> > +     if (netif_msg_pktdata(ax_local)) {
> > +             int loop;
> > +             netdev_info(ndev, "TX packet len %d, total len %d, seq %d\n",
> > +                             pkt_len, tx_skb->len, seq_num);
> > +
> > +             netdev_info(ndev, "  Dump SPI Header:\n    ");
> > +             for (loop = 0; loop < 4; loop++)
> > +                     netdev_info(ndev, "%02x ", *(tx_skb->data + loop));
> > +
> > +             netdev_info(ndev, "\n");
>
> This no longer works as far as i remember. Lines are terminate by
> default even if they don't have a \n.
>
> Please you should not be using netdev_info(). netdev_dbg() please.

We have a nice helper for this: print_hex_dump_debug().

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds