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From:   Ilia Mirkin <imirkin@alum.mit.edu>
Date:   Mon, 13 Aug 2018 15:11:28 -0400
Message-ID: <CAKb7UvjqVC5w4PDaVLtZqKs94bo22d4BGYgsQj9K-2_rksoqvg@mail.gmail.com>
Subject: Re: [PATCH v6 3/5] drm/nouveau: Fix deadlock with fb_helper with
 async RPM requests
To:     Lyude Paul <lyude@redhat.com>
Cc:     nouveau <nouveau@lists.freedesktop.org>,
        "# 3.9+" <stable@vger.kernel.org>, Lukas Wunner <lukas@wunner.de>,
        Karol Herbst <karolherbst@gmail.com>,
        Ben Skeggs <bskeggs@redhat.com>,
        David Airlie <airlied@linux.ie>,
        =?UTF-8?B?VmlsbGUgU3lyasOkbMOk?= <ville.syrjala@linux.intel.com>,
        Daniel Vetter <daniel.vetter@ffwll.ch>,
        Thierry Reding <treding@nvidia.com>,
        dri-devel <dri-devel@lists.freedesktop.org>,
        LKML <linux-kernel@vger.kernel.org>
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On Mon, Aug 13, 2018 at 3:07 PM, Lyude Paul <lyude@redhat.com> wrote:
> +bool
> +nouveau_fbcon_hotplugged_in_suspend(struct nouveau_fbdev *fbcon)
> +{
> +       bool hotplug;
> +
> +       if (!fbcon)
> +               return false;
> +
> +       mutex_lock(&fbcon->hotplug_lock);
> +       hotplug = fbcon->hotplug_waiting;
> +       mutex_unlock(&fbcon->hotplug_lock);
> +
> +       return hotplug;
> +}

I'm probably missing it, but where is this function used?