From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Richter 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 Message-ID: <20101217213034.7bf6587c@stein> References: <20101211173234.77617d3a@stein> <20101217211556.2789cb80@stein> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: Received: from einhorn.in-berlin.de ([192.109.42.8]:38664 "EHLO einhorn.in-berlin.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756049Ab0LQUau (ORCPT ); Fri, 17 Dec 2010 15:30:50 -0500 In-Reply-To: <20101217211556.2789cb80@stein> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Alan Stern Cc: linux-pm@lists.linux-foundation.org, linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org, "Rafael J. Wysocki" 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/