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From: Valdis.Kletnieks@vt.edu
To: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: "Pali Rohár" <pali.rohar@gmail.com>,
	"Wolfram Sang" <wsa@the-dreams.de>,
	"Jean Delvare" <jdelvare@suse.com>,
	"Steven Honeyman" <stevenhoneyman@gmail.com>,
	"Jochen Eisinger" <jochen@penguin-breeder.org>,
	"Gabriele Mazzotta" <gabriele.mzt@gmail.com>,
	"Andy Lutomirski" <luto@kernel.org>,
	"Mario Limonciello" <mario_limonciello@dell.com>,
	"Alex Hung" <alex.hung@canonical.com>,
	"Michał Kępień" <kernel@kempniu.pl>,
	"Takashi Iwai" <tiwai@suse.de>,
	linux-i2c@vger.kernel.org,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	platform-driver-x86@vger.kernel.org
Subject: Re: [PATCH] i2c: i801: Register optional lis3lv02d i2c device on Dell machines
Date: Tue, 27 Dec 2016 17:41:31 -0500	[thread overview]
Message-ID: <52345.1482878491@turing-police.cc.vt.edu> (raw)
In-Reply-To: <CAHp75VeWBaPNmT0mb+Gs_ZhFEHFx_H-Ro0UQ9u1VvLhNVjCqYQ@mail.gmail.com>

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On Wed, 28 Dec 2016 00:15:30 +0200, Andy Shevchenko said:
> On Tue, Dec 27, 2016 at 3:51 PM, Pali Rohár <pali.rohar@gmail.com> wrote:

> > I have no idea how to do it (properly) outside of i2c-i801.c file.
>
> I doubt we need a single line of code for this. See [1] and perhaps
> create an EFI variable with necessary upgrade device node.
>
> > Same thing is done for Fujitsu machines, see function
> > i801_probe_optional_slaves() in i2c-i801.c file. So I did similar
> > approach for Dell machines.
>
> Perhaps, this also needs to be converted to use EFI variable.
>
> [1] https://lwn.net/Articles/693212/

There's no guarantee that the laptops in question are booted with UEFI,
as Dell still supports legacy boot. So assuming the presence of EFI variables
is somewhat problematic.

In addition, it requires the user (or something in userspace) to set the UEFI
variable or configfs tweak, rather than Just Working Out Of The Box.


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  reply	other threads:[~2016-12-27 22:43 UTC|newest]

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-27 12:52 [PATCH] i2c: i801: Register optional lis3lv02d i2c device on Dell machines Pali Rohár
2016-12-27 13:43 ` Wolfram Sang
2016-12-27 13:51   ` Pali Rohár
2016-12-27 22:15     ` Andy Shevchenko
2016-12-27 22:41       ` Valdis.Kletnieks [this message]
2016-12-28  7:55         ` Andy Shevchenko
2016-12-28  9:05           ` Pali Rohár
2016-12-28 14:03             ` Wolfram Sang
2016-12-29  4:37               ` Valdis.Kletnieks
2016-12-28  8:38       ` Pali Rohár
2016-12-28 14:02     ` Wolfram Sang
2017-01-04  9:45       ` Jean Delvare
2016-12-29  8:29 ` Michał Kępień
2016-12-29  9:00   ` Pali Rohár
2016-12-29 13:47     ` Michał Kępień
2016-12-29 14:17       ` Pali Rohár
2016-12-29 21:09         ` Michał Kępień
2016-12-29 21:28           ` Pali Rohár
2017-01-03  9:06             ` Benjamin Tissoires
2017-01-03  9:23               ` Pali Rohár
2017-01-03 18:38               ` Dmitry Torokhov
2017-01-03 18:50                 ` Pali Rohár
2017-01-03 18:58                   ` Mario.Limonciello
2017-01-03 19:48                   ` Dmitry Torokhov
2017-01-03 20:05                     ` Pali Rohár
2017-01-03 20:24                       ` Dmitry Torokhov
2017-01-03 20:39                         ` Pali Rohár
2017-01-03 20:59                           ` Dmitry Torokhov
2017-01-04  8:18                             ` Pali Rohár
2017-01-04  9:05                               ` Benjamin Tissoires
2017-01-04  9:18                                 ` Pali Rohár
2017-01-04 10:13                                   ` Benjamin Tissoires
2017-01-04 10:21                                     ` Pali Rohár
2017-01-04 10:32                                       ` Benjamin Tissoires
2017-01-04 11:22                                         ` Pali Rohár
2017-01-04 12:00                                           ` Pali Rohár
2017-01-04 13:02                                             ` Benjamin Tissoires
2017-01-04 16:06                                               ` Pali Rohár
2017-01-04 17:39                                                 ` Benjamin Tissoires
2017-01-04 17:46                                                   ` Wolfram Sang
2017-01-04 17:54                                                     ` Dmitry Torokhov
2017-01-04 21:49                                                       ` Benjamin Tissoires
2017-01-04 21:55                                                         ` Dmitry Torokhov
2017-01-04 21:55                                                       ` Wolfram Sang
2017-01-04 22:00                                                         ` Dmitry Torokhov
2017-01-04 22:03                                                           ` Dmitry Torokhov
2017-01-05  2:20                                                       ` [PATCH] i2c: do not enable fall back to Host Notify by default kbuild test robot
2017-01-05  2:21                                                       ` kbuild test robot
2017-01-05  8:54                                                       ` [PATCH] i2c: i801: Register optional lis3lv02d i2c device on Dell machines Pali Rohár
2017-01-05  9:26                                                         ` Benjamin Tissoires
2017-01-04 18:50                             ` Jean Delvare
2017-01-04  9:53                           ` Andy Shevchenko
2017-01-04 10:25                             ` Benjamin Tissoires
2017-01-04 11:35                               ` Pali Rohár
2017-01-04 12:33                                 ` Benjamin Tissoires
2017-01-03 21:29                     ` Benjamin Tissoires
2017-01-04  6:36                       ` Dmitry Torokhov
2017-01-04  9:13                         ` Benjamin Tissoires
2017-01-04  9:25                           ` Pali Rohár
2017-01-03 20:20                   ` Andy Shevchenko
2017-01-04 10:18               ` Jean Delvare
2017-01-07 12:49         ` Wolfram Sang

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