linux-kernel - Re: [linux-pm] 2.6.37-rc5, pata_atiixp, DVD-ROM: kernel log flooded with "rpm_resume flags 0x4", "rpm

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Message-ID: <Pine.LNX.4.44L0.1012181311570.3334-100000@saphir.localdomain>
Date:	Sat, 18 Dec 2010 13:14:33 -0500 (EST)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Stefan Richter <stefanr@...6.in-berlin.de>
cc:	linux-pm@...ts.linux-foundation.org, <linux-ide@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, "Rafael J. Wysocki" <rjw@...k.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"

On Fri, 17 Dec 2010, Stefan Richter wrote:

> 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?

I don't know anything about the details of hal.  But I do know that you
can tell hal not to poll certain devices.  Look at "man
hal-disable-polling".

> 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.

Maybe CONFIG_DYNAMIC_DEBUG is set differently, or userspace enables 
dynamic debugging of different subsystems.

Alan Stern

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