linux-kernel - Re: [PATCH v6 RESEND] r8152: Add support for setting pass through MAC address on RTL8153-AD

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Message-ID: <20160713082358.487082a4@sauron>
Date:	Wed, 13 Jul 2016 08:23:58 +0200
From:	Michał Pecio <michal.pecio@...il.com>
To:	<Mario_Limonciello@...l.com>
Cc:	<davem@...emloft.net>, <linux-kernel@...r.kernel.org>,
	<netdev@...r.kernel.org>, <linux-usb@...r.kernel.org>,
	<anthony.wong@...onical.com>
Subject: Re: [PATCH v6 RESEND] r8152: Add support for setting pass through
 MAC address on RTL8153-AD

> So in order to hit this hypothetical corner case today you would 
> need to be using a real world type-C device something such as a 
> Dell WD15 on another OEM's machine that has type-C and the exact
> same ACPI object name that does $BADSTUFF other than return a
> buffer.
Exactly what I meant.
 
> If that situation arises please alert me and I'll send a follow up
> patch that whitelists this to match DMI vendor of only Dell 
> systems.
I'm not sure if it's the most responsible way to approach this problem.
There were cases of laptops bricking (as in - they would never power on
ever again) just because Linux made some bad BIOS/ACPI calls. Also, see
the famous Samsung UEFI NVRAM fiasco or the recent pains with EFIVARS.

Regards,
MP