From: Stefan Richter <stefanr@s5r6.in-berlin.de>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: linux-pm@lists.linux-foundation.org, <linux-ide@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, "Rafael J. Wysocki" <rjw@sisk.pl>
Subject: Re: [linux-pm] 2.6.37-rc5, pata_atiixp, DVD-ROM: kernel log flooded with "rpm_resume flags 0x4", "rpm_resume returns 1"
Date: Fri, 17 Dec 2010 21:30:34 +0100 [thread overview]
Message-ID: <20101217213034.7bf6587c@stein> (raw)
In-Reply-To: <20101217211556.2789cb80@stein>
On Dec 17 Stefan Richter wrote:
> On Dec 11 Alan Stern wrote:
> > This is probably because hal probes the DVD drive every two seconds
> > looking for media changes. However that's not supposed to cause
> > rpm_resume to be called for the host unless runtime PM is allowed for
> > the DVD drive, which it isn't according to your listings below. So
> > there's a bug somewhere.
>
> I had 2.6.36 running since then and have now booted into 2.6.37-rc6.
>
> Yes, it is hal indeed. Shutting hal down avoids this logging activity.
[...]
> Actually, this time I see once every two seconds a message about
> logical unit 6:0:0:0 and 6 times every two seconds a message about
> host7:
>
> Dec 17 20:22:08 stein kernel: sd 6:0:0:0: rpm_resume flags 0x4
> Dec 17 20:22:08 stein kernel: sd 6:0:0:0: rpm_resume returns 1
> Dec 17 20:22:08 stein kernel: scsi host7: rpm_resume flags 0x4
> Dec 17 20:22:08 stein kernel: scsi host7: rpm_resume returns 1
> Dec 17 20:22:08 stein kernel: scsi host7: rpm_resume flags 0x4
> Dec 17 20:22:08 stein kernel: scsi host7: rpm_resume returns 1
> Dec 17 20:22:08 stein kernel: scsi host7: rpm_resume flags 0x4
> Dec 17 20:22:08 stein kernel: scsi host7: rpm_resume returns 1
> Dec 17 20:22:08 stein kernel: scsi host7: rpm_resume flags 0x4
> Dec 17 20:22:08 stein kernel: scsi host7: rpm_resume returns 1
> Dec 17 20:22:08 stein kernel: scsi host7: rpm_resume flags 0x4
> Dec 17 20:22:08 stein kernel: scsi host7: rpm_resume returns 1
> Dec 17 20:22:08 stein kernel: scsi host7: rpm_resume flags 0x4
> Dec 17 20:22:08 stein kernel: scsi host7: rpm_resume returns 1
> Dec 17 20:22:10 stein kernel: sd 6:0:0:0: rpm_resume flags 0x4
> Dec 17 20:22:10 stein kernel: sd 6:0:0:0: rpm_resume returns 1
> Dec 17 20:22:10 stein kernel: scsi host7: rpm_resume flags 0x4
> Dec 17 20:22:10 stein kernel: scsi host7: rpm_resume returns 1
> Dec 17 20:22:10 stein kernel: scsi host7: rpm_resume flags 0x4
> Dec 17 20:22:10 stein kernel: scsi host7: rpm_resume returns 1
> Dec 17 20:22:10 stein kernel: scsi host7: rpm_resume flags 0x4
> Dec 17 20:22:10 stein kernel: scsi host7: rpm_resume returns 1
> Dec 17 20:22:10 stein kernel: scsi host7: rpm_resume flags 0x4
> Dec 17 20:22:10 stein kernel: scsi host7: rpm_resume returns 1
> Dec 17 20:22:10 stein kernel: scsi host7: rpm_resume flags 0x4
> Dec 17 20:22:10 stein kernel: scsi host7: rpm_resume returns 1
> Dec 17 20:22:10 stein kernel: scsi host7: rpm_resume flags 0x4
> Dec 17 20:22:10 stein kernel: scsi host7: rpm_resume returns 1
>
> sd 6:0:0:0 is a USB card reader built into a monitor:
> Host: scsi6 Channel: 00 Id: 00 Lun: 00
> Vendor: Generic Model: Ultra HS-SD/MMC Rev: 1.88
> Type: Direct-Access ANSI SCSI revision: 00
Well right --- hald polls the card reader for media change too.
I now noticed that the two lines
sd *:0:0:0: rpm_resume flags 0x4
sd *:0:0:0: rpm_resume returns 1
are logged once for each sd device (i.e. those with fixed media too)
at the startup of hald. Is this expected?
Note, I have not seen anything of the sort on another PC which runs
2.3.37-rc6 with the same PM debug options. The differences are that
the other PC is an Intel 945GM based one with x86-32 kernel and 32bit
Gentoo userland, whereas the PC with log spam is an AMD RS780 based one
with x86-64 kernel and 64bit Gentoo userland. Both got hal 0.5.14-r2.
--
Stefan Richter
-=====-==-=- ==-- =---=
http://arcgraph.de/sr/
next prev parent reply other threads:[~2010-12-17 20:30 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20101211173234.77617d3a@stein>
2010-12-11 19:29 ` [linux-pm] 2.6.37-rc5, pata_atiixp, DVD-ROM: kernel log flooded with "rpm_resume flags 0x4", "rpm_resume returns 1" Rafael J. Wysocki
2010-12-11 19:38 ` Alan Stern
2010-12-17 20:15 ` Stefan Richter
2010-12-17 20:30 ` Stefan Richter [this message]
2010-12-17 20:32 ` Stefan Richter
2010-12-18 18:14 ` Alan Stern
2010-12-18 19:12 ` Stefan Richter
2010-12-18 18:11 ` Alan Stern
2010-12-18 19:08 ` Stefan Richter
2010-12-18 22:41 ` Rafael J. Wysocki
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