linux-kernel - [2.6.37-rc1] wait_for

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Date:	Sat, 6 Nov 2010 03:07:55 +0900
From:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:	cbouatmailru@...il.com, gregkh@...e.de, kay.sievers@...y.org,
	ak@...ux.intel.com
Cc:	axboe@...nel.dk, shemminger@...tta.com, ebiederm@...ssion.com,
	stern@...land.harvard.edu, James.Bottomley@...e.de,
	akpm@...ux-foundation.org, kuznet@....inr.ac.ru,
	randy.dunlap@...cle.com, tj@...nel.org, davem@...emloft.net,
	perex@...ex.cz, tiwai@...e.de, mingo@...e.hu,
	a.p.zijlstra@...llo.nl, dhowells@...hat.com,
	linux-kernel@...r.kernel.org
Subject: [2.6.37-rc1] wait_for_sysfs prints errors.

Hello.

I noticed that udevd-event started to print error messages.

  Starting udev: udevd-event[1682]: wait_for_sysfs: waiting for '/sys/devices/pci0000:00/0000:00:10.0/host0/ioerr_cnt' failed
  udevd-event[2103]: wait_for_sysfs: waiting for '/sys/devices/pci0000:00/0000:00:10.0/host0/target0:0:1/ioerr_cnt' failed
  udevd-event[2102]: wait_for_sysfs: waiting for '/sys/devices/pci0000:00/0000:00:10.0/host0/target0:0:0/ioerr_cnt' failed

These error messages are caused by one or more of below commits.
(Sorry, I can't find exact one because I can't boot as of below commits.)

5cfc64ce "base/platform: Safe handling for NULL platform data and resources"
807508c8 "base/platform: Simplifications for NULL platform data/resources handling"
39aba963 "driver core: remove CONFIG_SYSFS_DEPRECATED_V2 but keep it for block devices"

Is this a regression? (Is this an intended change?)

2.6.36 was OK and below is tail of bisection log.

# good: [da0d7f982d538f4a5bcdddb84df4a484a3b1770b] pch_phub: fix build warnings
git bisect good da0d7f982d538f4a5bcdddb84df4a484a3b1770b
# bad: [39aba963d937edb20db7d9d93e6dda5d2adfdcdd] driver core: remove CONFIG_SYSFS_DEPRECATED_V2 but keep it for block devices
git bisect bad 39aba963d937edb20db7d9d93e6dda5d2adfdcdd
# skip: [5cfc64ceb6222aabec640ba76e89529a8fc2c1f0] base/platform: Safe handling for NULL platform data and resources
git bisect skip 5cfc64ceb6222aabec640ba76e89529a8fc2c1f0
# skip: [807508c8ff9af6ce8f25c5ca5f3eb06a8e7d3286] base/platform: Simplifications for NULL platform data/resources handling
git bisect skip 807508c8ff9af6ce8f25c5ca5f3eb06a8e7d3286
# skip: [87544653abe4a03324bc85dae32d5bdaabcfccef] debugfs: mark me as the maintainer
git bisect skip 87544653abe4a03324bc85dae32d5bdaabcfccef

My environment is CentOS 5.5(GCC 4.1.2) i686 with 512MB RAM.

Regards.
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