linux-kernel - Re: [PATCH] wlcore: add missing nvs file name info for wilink8

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Date:   Wed, 5 Jul 2017 23:26:35 -0700
From:   Tony Lindgren <tony@...mide.com>
To:     Sebastian Reichel <sebastian.reichel@...labora.co.uk>
Cc:     "Reizer, Eyal" <eyalr@...com>, Kalle Valo <kvalo@...eaurora.org>,
        "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] wlcore: add missing nvs file name info for wilink8

* Sebastian Reichel <sebastian.reichel@...labora.co.uk> [170705 01:29]:
> Hi,
> 
> On Wed, Jul 05, 2017 at 01:06:54AM -0700, Tony Lindgren wrote:
> > > > Not sure if this really is a regression as we've always had a bogus
> > > > wl1271-nvs.bin in linux-firmware.git. Sure would be nice to fix it,
> > > > but going back to using a generic wl1271-nvs.bin sure does not seem
> > > > like a good long term fix to me :)
> > > A lot of legacy here...
> > > Wl1271-nvs has been used mainly with wilink6/7 and indeed was device specific
> > > Holding calibration info etc.
> > > When they started with wilink8 the device specific configuration that was 
> > > Part of it has switched to wl18xx-conf.bin and using the wlaconf tool for setting it.
> > > Also there is no calibration specific info per device with wilink8 so the wl18xx-conf.bin
> > > The only thing left in wl1271-nvs.bin for wilink8 was the mac address override.
> > 
> > And the default wl1271-nvs.bin sets the mac address to a bogus deadbeef address,
> > so it's wrong to use and totally broken for distros :(
> 
> So use something like the following pseudo-code?
> 
> if (fw->mac_address == deadbeef) {
>     fw->mac_address = get_random_mac();
>     dev_warn(dev, "Detected unconfigured wl1271-nvs.bin.\n"
>         "Your device will run with limited performance.\n"
>         "Please use ti-utils to configure your device.\n");
> }

Yeah something like that should do the trick  :)

Regards,

Tony