linux-kernel - Re: [PATCH] ath10k: retrieve MAC address from firmware if provided

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Message-ID: <CA+ASDXOeybJAsWJtVBdLdQ=6xThJja5MaEoa3dERKZ-shkbDkg@mail.gmail.com>
Date:   Mon, 13 Aug 2018 10:14:44 -0700
From:   Brian Norris <briannorris@...omium.org>
To:     Arend van Spriel <arend.vanspriel@...adcom.com>
Cc:     Kalle Valo <kvalo@....qualcomm.com>, ath10k@...ts.infradead.org,
        linux-wireless@...r.kernel.org, govinds@...eaurora.org,
        Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ath10k: retrieve MAC address from firmware if provided

On Sat, Aug 11, 2018 at 11:26 AM Arend van Spriel
<arend.vanspriel@...adcom.com> wrote:
>
> On 8/11/2018 1:39 AM, Brian Norris wrote:
> > Devices may provide their own MAC address via system firmware (e.g.,
>
> You got me confused by using just "firmware" in the subject.

Yeah...I started by writing this patch with device tree specifically
(of_get_mac_address()), and then later found that there were generic
"device" helpers for this, which can assist with other sorts of
firmware nodes. It was easier to put a name on a device tree patch
than on a "device" patch. I suppose "system firmware" might be a
better description?

> > device tree), especially in the case where the device doesn't have a
> > useful EEPROM on which to store its MAC address (e.g., for integrated
> > Wifi).
> >
> > Use the generic device helper to retrieve the MAC address, and (if
> > present) honor it above the MAC address advertised by the card.
>
> But this put me back on track ;-)

Let me know if you have a better way to clarify. I can resend with a
slightly modified subject (s/firmware/system firmware/), or let Kalle
do it, if that's the only thing to change.

Brian