linux-kernel - Re: [RFC] fs: add userspace critical mounts event support

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Message-ID: <20160906222847.GF15161@tuxbot>
Date:   Tue, 6 Sep 2016 15:28:47 -0700
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     "Luis R. Rodriguez" <mcgrof@...nel.org>
Cc:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
        Jacek Anaszewski <j.anaszewski@...sung.com>,
        David Woodhouse <dwmw2@...radead.org>,
        Christian Lamparter <chunkeey@...glemail.com>,
        Julia Lawall <Julia.Lawall@...6.fr>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        Mimi Zohar <zohar@...ux.vnet.ibm.com>,
        Andy Lutomirski <luto@...capital.net>,
        Richard Purdie <rpurdie@...ys.net>,
        Wu Fengguang <fengguang.wu@...el.com>,
        Johannes Berg <johannes@...solutions.net>,
        Michal Marek <mmarek@...e.com>,
        Hauke Mehrtens <hauke@...ke-m.de>,
        Mark Brown <broonie@...nel.org>, Jiri Slaby <jslaby@...e.com>,
        Ming Lei <ming.lei@...onical.com>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Kevin Cernekee <cernekee@...il.com>,
        Jeff Mahoney <jeffm@...e.com>,
        Greg KH <gregkh@...uxfoundation.org>,
        Jonathan Corbet <corbet@....net>, Felix Fietkau <nbd@....name>,
        David Howells <dhowells@...hat.com>,
        Vikram Mulukutla <markivx@...eaurora.org>,
        Alessandro Rubini <rubini@...dd.com>,
        Tom Gundersen <teg@...m.no>, Kees Cook <keescook@...omium.org>,
        Takashi Iwai <tiwai@...e.de>, Gilles.Muller@...6.fr,
        linux-serial <linux-serial@...r.kernel.org>,
        Roman Pen <r.peniaev@...il.com>, Kay Sievers <kay@...y.org>,
        Stephen Boyd <stephen.boyd@...aro.org>, nicolas.palix@...g.fr,
        "Abhay_Salunke@...l.com" <Abhay_Salunke@...l.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Thierry Martinez <martinez@...p.org>,
        Josh Boyer <jwboyer@...oraproject.org>
Subject: Re: [RFC] fs: add userspace critical mounts event support

On Tue 06 Sep 14:52 PDT 2016, Luis R. Rodriguez wrote:

> We already have MODULE_FIRMWARE(), we could have MODULE_FIRMWARE_REQ() or
> something like it to help annotate the the driver was only functional with the
> firmware, punt things to kmod to deal with the requirements.

That implies that a single driver will only use a single version of the
firmware. There are cases where we want a single driver to load firmware
depending on e.g. hardware revisions, or previous firmware version and
there are cases where we want to load firmware based on requested
use-cases.

Regards,
Bjorn