netdev - RE: [PATCH net-next 08/18] ravb: Add R-Car common features

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Message-ID: <OS0PR01MB5922149AE3ADA137B64C400B86EB9@OS0PR01MB5922.jpnprd01.prod.outlook.com>
Date:   Thu, 29 Jul 2021 15:10:54 +0000
From:   Biju Das <biju.das.jz@...renesas.com>
To:     Andrew Lunn <andrew@...n.ch>
CC:     Sergei Shtylyov <sergei.shtylyov@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Sergey Shtylyov <s.shtylyov@...russia.ru>,
        Adam Ford <aford173@...il.com>,
        Yuusuke Ashizuka <ashiduka@...itsu.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-renesas-soc@...r.kernel.org" 
        <linux-renesas-soc@...r.kernel.org>,
        Chris Paterson <Chris.Paterson2@...esas.com>,
        Biju Das <biju.das@...renesas.com>,
        Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: RE: [PATCH net-next 08/18] ravb: Add R-Car common features

Hi Andrew,

Thanks for the feedback.

> Subject: Re: [PATCH net-next 08/18] ravb: Add R-Car common features
> 
> > > > @@ -2205,8 +2235,10 @@ static int ravb_probe(struct
> > > > platform_device
> > > *pdev)
> > > >  	}
> > > >  	clk_prepare_enable(priv->refclk);
> > > >
> > > > -	ndev->max_mtu = 2048 - (ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN);
> > > > -	ndev->min_mtu = ETH_MIN_MTU;
> > > > +	if (info->features & RAVB_OVERRIDE_MTU_CHANGE) {
> > >
> > >    Why? :-/ Could you tell me more details?
> >
> > RX buff size = 2048 for R-Car where as it is 8K for RZ/G2L.
> 
> RAVB_OVERRIDE_MTU_CHANGE is not the most descriptive name. You are not
> overriding, you are setting the correct value for the hardware variant.

Thanks for correcting me.

> Maybe name the feature RAVB_8K_BUFFERS or RAVB_2K_BUFFERS.

OK.

> 
> Also, putting more details in the commit message will help, and lots of
> small patches, each patch doing one thing. 

Agreed. Will send smaller patches with more details on commit message.

It is much better to have 40
> simple, well documented, obviously correct patches, than 20 hard to
> understand patches. But please do submit them in small batches, no more
> than 15 at once.

OK. 

Cheers,
Biju