From mboxrd@z Thu Jan  1 00:00:00 1970
From: Greg KH <greg-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
Subject: Re: [PATCH v3 4/4] Documentation: ABI:
 /sys/firmware/devicetree/overlays
Date: Mon, 27 Apr 2015 20:11:38 +0200
Message-ID: <20150427181138.GA27043@kroah.com>
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To: Pantelis Antoniou <panto-wVdstyuyKrO8r51toPun2/C9HSW9iNxf@public.gmane.org>
Cc: Rob Herring <robherring2-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Grant Likely <grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>, Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>, Matt Porter <mporter-OWPKS81ov/FWk0Htik3J/w@public.gmane.org>, Koen Kooi <koen-QLwJDigV5abLmq1fohREcCpxlwaOVQ5f@public.gmane.org>, Guenter Roeck <linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Linux Kernel Mailing List <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
List-Id: linux-api@vger.kernel.org

On Mon, Apr 27, 2015 at 08:51:20PM +0300, Pantelis Antoniou wrote:
> Hi Greg,
>=20
> > On Apr 24, 2015, at 23:31 , Greg KH <greg-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org> wrote:
> >=20
> > On Fri, Apr 24, 2015 at 12:45:44PM +0300, Pantelis Antoniou wrote:
> >> Documentation ABI entry for overlays sysfs entries.
> >>=20
> >> Signed-off-by: Pantelis Antoniou <pantelis.antoniou-OWPKS81ov/FWk0Htik3J/w@public.gmane.org>
> >> ---
> >> .../ABI/testing/sysfs-firmware-devicetree-overlays | 23 ++++++++++=
++++++++++++
> >> 1 file changed, 23 insertions(+)
> >> create mode 100644 Documentation/ABI/testing/sysfs-firmware-device=
tree-overlays
> >>=20
> >> diff --git a/Documentation/ABI/testing/sysfs-firmware-devicetree-o=
verlays b/Documentation/ABI/testing/sysfs-firmware-devicetree-overlays
> >> new file mode 100644
> >> index 0000000..6b81f1c
> >> --- /dev/null
> >> +++ b/Documentation/ABI/testing/sysfs-firmware-devicetree-overlays
> >> @@ -0,0 +1,23 @@
> >> +What:		/sys/firmware/devicetree/overlays/
> >> +Date:		March 2015
> >> +Contact:	Pantelis Antoniou <pantelis.antoniou-OWPKS81ov/FWk0Htik3J/w@public.gmane.org>
> >> +Description:
> >> +		This directory contains the applied device tree overlays of
> >> +		the running system, as directories of the overlay id.
> >=20
> > "as"?
> >=20
> >> +
> >> +		enable: The master enable switch, by default is 1, and when
> >> +		        set to 0 it cannot be re-enabled for security reasons.
> >=20
> > What are those reasons?
> >=20
>=20
> There=E2=80=99s a whole subthread with Grant & Kees going over securi=
ty concerns.
>=20
> http://comments.gmane.org/gmane.linux.drivers.devicetree/101871

Great, document it here please, so that others know this :)

thanks,

greg k-h