From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Martin Mokrejs <mmokrejs@fold.natur.cuni.cz>
Cc: Linux PM list <linux-pm@vger.kernel.org>
Subject: Re: suspended DRAM bridge
Date: Mon, 01 Apr 2013 22:56:34 +0200 [thread overview]
Message-ID: <35938665.ZFvDxnCU3l@vostro.rjw.lan> (raw)
In-Reply-To: <5159BAC9.80700@fold.natur.cuni.cz>
On Monday, April 01, 2013 06:50:17 PM Martin Mokrejs wrote:
> Hi Rafael,
> I have a simple question. Why seems my DRAM controller suspended?
I suppose that runtime PM is disabled for that device and therefore
runtime_status is meaningless.
And really, that attribute is for *debugging* things by developers who know
what they are looking for and not for random poking.
Besides, this is a host bridge, not a DRAM controller.
> Does it make any sense in a laptop computer? How could the laptop work at all?
I suppose it wouldn't work if the PCI host bridge were suspended. At least
it couldn't access memory and the PCI bus then.
Thanks,
Rafael
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
next parent reply other threads:[~2013-04-01 20:49 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <5159BAC9.80700@fold.natur.cuni.cz>
2013-04-01 20:56 ` Rafael J. Wysocki [this message]
2013-04-01 21:09 ` suspended DRAM bridge Martin Mokrejs
2013-04-01 21:41 ` Rafael J. Wysocki
2013-04-01 22:03 ` Martin Mokrejs
2013-04-02 14:30 ` Martin Mokrejs
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=35938665.ZFvDxnCU3l@vostro.rjw.lan \
--to=rjw@sisk.pl \
--cc=linux-pm@vger.kernel.org \
--cc=mmokrejs@fold.natur.cuni.cz \
/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