linux-kernel - Re: [PATCH v2] i2c: i801: Register optional lis3lv02d i2c device on Dell machines

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: <20180131120348.azy25aqvn5wrdkeh@pali>
Date:   Wed, 31 Jan 2018 13:03:48 +0100
From:   Pali Rohár <pali.rohar@...il.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Jean Delvare <jdelvare@...e.com>, Wolfram Sang <wsa@...-dreams.de>,
        Michał Kępień <kernel@...pniu.pl>,
        Steven Honeyman <stevenhoneyman@...il.com>,
        Valdis Kletnieks <Valdis.Kletnieks@...edu>,
        Jochen Eisinger <jochen@...guin-breeder.org>,
        Gabriele Mazzotta <gabriele.mzt@...il.com>,
        Andy Lutomirski <luto@...nel.org>,
        Mario Limonciello <Mario_Limonciello@...l.com>,
        Alex Hung <alex.hung@...onical.com>,
        Takashi Iwai <tiwai@...e.de>,
        linux-i2c <linux-i2c@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Platform Driver <platform-driver-x86@...r.kernel.org>
Subject: Re: [PATCH v2] i2c: i801: Register optional lis3lv02d i2c device on
 Dell machines

On Sunday 28 January 2018 17:00:35 Andy Shevchenko wrote:
> On Sun, Jan 28, 2018 at 4:45 PM, Pali Rohár <pali.rohar@...il.com> wrote:
> > On Sunday 28 January 2018 16:39:25 Andy Shevchenko wrote:
> >> On Sat, Jan 27, 2018 at 3:32 PM, Pali Rohár <pali.rohar@...il.com> wrote:
> >> > +static bool is_dell_system_with_lis3lv02d(void)
> >> > +{
> >>
> >> > +       /*
> >> > +        * Check that ACPI device SMO88xx exists and is enabled. That ACPI
> >> > +        * device represent our ST microelectronics lis3lv02d accelerometer but
> >> > +        * unfortunately without any other information (like i2c address).
> >> > +        */
> >>
> >> Isn't it simple
> >>
> >> return acpi_dev_present("SMO88", NULL, -1);
> >>
> >> call?
> >
> > ACPI device name is SMO8800, SMO8810, ... Will that acpi_dev_present
> > function match only prefix and not exact string?
> 
> OK, fair enough.
> 
> Do we have more users of such pattern?

I have not seen this ACPI pattern yet, so probably not.

-- 
Pali Rohár
pali.rohar@...il.com