From: Mika Westerberg <mika.westerberg@linux.intel.com>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: LKML <linux-kernel@vger.kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Linux PM list <linux-pm@vger.kernel.org>,
ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
Zhang Rui <rui.zhang@intel.com>,
"Svahn, Kai" <kai.svahn@intel.com>,
Huang Ying <ying.huang@intel.com>,
"Lan, Tianyu" <tianyu.lan@intel.com>,
"Zheng, Lv" <lv.zheng@intel.com>, Aaron Lu <aaron.lu@intel.com>,
Grant Likely <grant.likely@secretlab.ca>
Subject: Re: [PATCH 0/2] ACPI / platform: Put devices enumerated via ACPI into D0 before probing drivers
Date: Mon, 26 Nov 2012 08:31:18 +0200 [thread overview]
Message-ID: <20121126063118.GF3867@intel.com> (raw)
In-Reply-To: <1672179.qgDUs0YdYu@vostro.rjw.lan>
On Sun, Nov 25, 2012 at 03:54:14PM +0100, Rafael J. Wysocki wrote:
> The following two patches are meant to work around a problem where some
> devices may be in the ACPI D3cold power state (power off) before their
> drivers' .probe() routines are called, but those routines assume devices
> to be operational. They also allow ACPI PM to be used going forward with
> the devices in question.
We have such machines here. I've tested the series on one of them and it
solves the problem - drivers can now access device registers right from the
start.
> [1/2] - Allow ACPI PM attach/detach routines to change device power states.
> [2/2] - Call the ACPI PM attach/detach routines in the platform probe and
> remove/shutdown callbacks (and change power states of devices as
> necessary).
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
prev parent reply other threads:[~2012-11-26 6:31 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-25 14:54 [PATCH 0/2] ACPI / platform: Put devices enumerated via ACPI into D0 before probing drivers Rafael J. Wysocki
2012-11-25 14:55 ` [PATCH 1/2] ACPI / PM: Allow attach/detach routines to change device power states Rafael J. Wysocki
2012-11-26 0:43 ` Huang Ying
2012-11-26 1:00 ` Rafael J. Wysocki
2012-11-26 1:07 ` Huang Ying
2012-11-26 1:16 ` Rafael J. Wysocki
2012-11-26 1:25 ` Huang Ying
2012-11-25 14:58 ` [PATCH 2/2] platform / ACPI: Attach/detach ACPI PM during probe/remove/shutdown Rafael J. Wysocki
2012-11-25 18:42 ` Greg Kroah-Hartman
2012-11-25 19:57 ` Rafael J. Wysocki
2012-11-27 5:24 ` Zheng, Lv
2012-11-26 6:31 ` Mika Westerberg [this message]
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=20121126063118.GF3867@intel.com \
--to=mika.westerberg@linux.intel.com \
--cc=aaron.lu@intel.com \
--cc=grant.likely@secretlab.ca \
--cc=gregkh@linuxfoundation.org \
--cc=kai.svahn@intel.com \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=lv.zheng@intel.com \
--cc=rjw@sisk.pl \
--cc=rui.zhang@intel.com \
--cc=tianyu.lan@intel.com \
--cc=ying.huang@intel.com \
/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).