linux-kernel - Re: [PATCH] ARC: AXS10x/HSDK: Allow U-Boot to pass MAC-address to the kernel

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Message-ID: <C2D7FE5348E1B147BCA15975FBA23075012B089D74@us01wembx1.internal.synopsys.com>
Date:   Thu, 2 Aug 2018 21:58:02 +0000
From:   Vineet Gupta <Vineet.Gupta1@...opsys.com>
To:     Alexey Brodkin <Alexey.Brodkin@...opsys.com>,
        "linux-snps-arc@...ts.infradead.org" 
        <linux-snps-arc@...ts.infradead.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Rob Herring <robh+dt@...nel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH] ARC: AXS10x/HSDK: Allow U-Boot to pass MAC-address to
 the kernel

On 08/02/2018 03:19 AM, Alexey Brodkin wrote:
> Otherwise kernel uses random MAC which is not very conveniet.

Curious what exactly is the issue - why does the user care what MAC is assigned ?

> With that change in place use might set desired MAC in U-Boot
> with "setenv ethaddr 11:22:33:44:55:66", save environment and
> then from boot to boot the same MAC will be used by the kernel.
>

And what if one is running without uboot - it will resort to all zeros vs. random
yet working MAC ?