linux-kernel - Re: [PATCH v5 0/7] platform/chrome: Add user-space dev inferface support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20150226005741.GB3101@quad.lixom.net>
Date:	Wed, 25 Feb 2015 16:57:41 -0800
From:	Olof Johansson <olof@...om.net>
To:	Javier Martinez Canillas <javier.martinez@...labora.co.uk>
Cc:	Lee Jones <lee.jones@...aro.org>,
	Doug Anderson <dianders@...omium.org>,
	Bill Richardson <wfrichar@...omium.org>,
	Simon Glass <sjg@...gle.com>,
	Gwendal Grignou <gwendal@...gle.com>,
	Jonathan Corbet <corbet@....net>,
	Varka Bhadram <varkabhadram@...il.com>,
	Paul Bolle <pebolle@...cali.nl>,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 0/7] platform/chrome: Add user-space dev inferface
 support

On Mon, Feb 16, 2015 at 09:19:49AM +0100, Javier Martinez Canillas wrote:
> Hello Olof,
> 
> On 02/02/2015 12:26 PM, Javier Martinez Canillas wrote:
> > Hello,
> > 
> > The mainline ChromeOS Embedded Controller (EC) driver is still missing some
> > features that are present in the downstream ChromiumOS tree. These are:
> > 
> >   - Low Pin Count (LPC) interface
> >   - User-space device interface
> >   - Access to vboot context stored on a block device
> >   - Access to vboot context stored on EC's nvram
> >   - Power Delivery Device
> >   - Support for multiple EC in a system
> > 
> > This is a fifth version of a series that adds support for the first two of
> > the missing features: the EC LPC and EC character device interfaces that
> > are used by user-space to access the ChromeOS EC. The support patches were
> > taken from the downstream ChromiumOS 3.14 tree with the fixes and cleanups
> > squashed to have a minimal patch-set.
> > 
> 
> Any comments on this series? The last version was posted a couple of weeks
> ago but the series have been in the list for months. Lee has already acked
> the mfd changes so you can merge all through your chrome-platform tree if
> you want.
> 
> It wold be great if this series get in to have the EC user-space interface
> supported and to minimize the delta with the Chromemium OS kernel since it
> still has other features that needs to be upstreamed like multiple EC in a
> system and access to vboot context stored in block device or EC's nvram.

Yeah, sorry for dragging my feet on this. The only thing I found that should
should be revisited is the reuse of the ioctl numbers to make it easier to
transition on the Chrome OS side -- otherwise it'll be hard to know from
userspace to use old or new structs during transition without a flag day.


-Olof
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/