linuxppc-dev.lists.ozlabs.org archive mirror
 help / color / mirror / Atom feed
From: Wolfram Sang <wsa@the-dreams.de>
To: linuxppc-dev@ozlabs.org
Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org,
	Wolfram Sang <wsa@the-dreams.de>
Subject: [RFC 0/2] get rid of remaining users of attach_adapter
Date: Thu,  4 Dec 2014 17:41:51 +0100	[thread overview]
Message-ID: <1417711313-7257-1-git-send-email-wsa@the-dreams.de> (raw)

The attach_adapter mechanism of the I2C framework is deprecated for years.
There are two users left, drivers for old Macintosh computers. I recently got
the idea of replacing this mechanism with a custom one with the help of
deferred probing. Because I don't have the hardware, I worked on a seperate
branch where I modified the windtunnel driver to be runnable on my Renesas
Lager board (ARM). I first verified that the attach_adapter method was used,
then the driver rightfully failed on detecting the i2c clients. Using my custom
mechanism, the same happens: all busses get scanned, then the clients cannot be
detected. Since I didn't change the actual detection code, I assume that it
should be working on those Macintosh devices as well. The keywest driver is
only compile-tested. That being said, I'd be more than happy, if we could find
someone willing to test these patches. If they could be applied, we can
_finally_ get rid of this legacy mechanism and clean up the i2c core.

The branch I used for ARM compilation is here:

git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git i2c/attach_adapter_removal_with_arm_compile-experimental

Thanks,

   Wolfram

Wolfram Sang (2):
  macintosh: therm_windtunnel: drop using attach adapter
  sound: ppc: keywest: drop using attach adapter

 drivers/macintosh/therm_windtunnel.c | 25 +++++++++++++++++++++++--
 sound/ppc/keywest.c                  | 21 ++++++++++++++++++---
 2 files changed, 41 insertions(+), 5 deletions(-)

-- 
2.1.3

             reply	other threads:[~2014-12-04 16:42 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-12-04 16:41 Wolfram Sang [this message]
2014-12-04 16:41 ` [RFC 1/2] macintosh: therm_windtunnel: drop using attach adapter Wolfram Sang
2014-12-04 16:41 ` [RFC 2/2] sound: ppc: keywest: " Wolfram Sang
2014-12-04 16:58   ` [alsa-devel] " Takashi Iwai
2014-12-04 17:46     ` Wolfram Sang

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1417711313-7257-1-git-send-email-wsa@the-dreams.de \
    --to=wsa@the-dreams.de \
    --cc=alsa-devel@alsa-project.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linuxppc-dev@ozlabs.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).