linux-kernel - Re: [Resubmit] Read battery voltage from Logitech Gaming mice

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Message-ID: <3c37ccc992d7979358e8472fbf52a583c6e1068f.camel@archlinux.org>
Date:   Fri, 23 Aug 2019 15:48:07 +0100
From:   Filipe Laíns <lains@...hlinux.org>
To:     Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        Pedro Vanzella <pedro@...rovanzella.com>,
        Bastien Nocera <hadess@...ess.net>
Cc:     "open list:HID CORE LAYER" <linux-input@...r.kernel.org>,
        Jiri Kosina <jikos@...nel.org>,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: [Resubmit] Read battery voltage from Logitech Gaming mice

On Fri, 2019-08-23 at 16:32 +0200, Benjamin Tissoires wrote:
> The problem I have with quirks, and that I explained to Filipe on IRC
> is that this is kernel ABI. Even if there is a very low chance we have
> someone using this, re-using the same drv_data bit in the future might
> break someone's device.

But we can reserve those bits. I don't expect there to be a ton of
devices that need to be quirked, so using the remaining bits should be
perfectly fine. Do you agree?

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