linux-kernel - Re: [PATCH net-next 10/10] net: mvneta: Use the new hwbm framework

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Date:	Tue, 12 Jan 2016 23:40:40 +0100
From:	Marcin Wojtas <mw@...ihalf.com>
To:	Gregory CLEMENT <gregory.clement@...e-electrons.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Florian Fainelli <f.fainelli@...il.com>,
	Jason Cooper <jason@...edaemon.net>,
	Andrew Lunn <andrew@...n.ch>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Lior Amsalem <alior@...vell.com>,
	Nadav Haklai <nadavh@...vell.com>,
	Simon Guinot <simon.guinot@...uanux.org>,
	Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Boris BREZILLON <boris.brezillon@...e-electrons.com>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Willy Tarreau <w@....eu>, Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH net-next 10/10] net: mvneta: Use the new hwbm framework

Hi Gregory,

A quick remark below. All changes look fine to me at a first look, but
I will test and dig more into code soon.

>
> @@ -3946,11 +3965,6 @@ static int mvneta_probe(struct platform_device *pdev)
>         dev->priv_flags |= IFF_UNICAST_FLT;
>         dev->gso_max_segs = MVNETA_MAX_TSO_SEGS;
>
> -       err = register_netdev(dev);
> -       if (err < 0) {
> -               dev_err(&pdev->dev, "failed to register\n");
> -               goto err_free_stats;
> -       }

The purpose of shifting register_netdev() was to be able to obtain
pp->id from net_device, before mvneta_bm_port_init is called. It is
needed for proper port - pool mapping control.

>
>         pp->id = dev->ifindex;
>
> @@ -3965,6 +3979,12 @@ static int mvneta_probe(struct platform_device *pdev)
>                 }
>         }
>
> +       err = register_netdev(dev);
> +       if (err < 0) {
> +               dev_err(&pdev->dev, "failed to register\n");
> +               goto err_free_stats;
> +       }
> +
>         err = mvneta_init(&pdev->dev, pp);
>         if (err < 0)
>                 goto err_netdev;

Best regards,
Marcin