linux-kernel - Re: [PATCH 1/3] pinctrl: cherryview: Serialize register access in suspend and resume hooks

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]

Date:   Fri, 4 Nov 2016 16:12:14 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Mika Westerberg <mika.westerberg@...ux.intel.com>
Cc:     Christian Steiner <christian.steiner@...look.de>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/3] pinctrl: cherryview: Serialize register access in
 suspend and resume hooks

On Mon, Oct 31, 2016 at 3:57 PM, Mika Westerberg
<mika.westerberg@...ux.intel.com> wrote:

> If async suspend is enabled, the driver may access registers concurrently
> with another instance which may fail because of the bug in Cherryview GPIO
> hardware. Prevent this by taking the shared lock while accessing the
> hardware in suspend and resume hooks.
>
> Signed-off-by: Mika Westerberg <mika.westerberg@...ux.intel.com>

Patch applied.

Yours,
Linus Walleij