2.6.36-rc5-git7: Reported regressions 2.6.34 -> 2.6.35

2.6.36-rc5-git7: Reported regressions 2.6.34 -> 2.6.35

[Rafael J. Wysocki]

This message contains a list of some post-2.6.34 regressions introduced before
2.6.35, for which there are no fixes in the mainline known to the tracking team.
If any of them have been fixed already, please let us know.

If you know of any other unresolved post-2.6.34 regressions, please let us know
either and we'll add them to the list.  Also, please let us know if any
of the entries below are invalid.

Each entry from the list will be sent additionally in an automatic reply to
this message with CCs to the people involved in reporting and handling the
issue.


Listed regressions statistics:

  Date          Total  Pending  Unresolved
  ----------------------------------------
  2010-09-26      139       24          21
  2010-09-20      137       27          25
  2010-09-12      135       26          25
  2010-08-30      124       38          34
  2010-08-01      100       27          23
  2010-07-23       94       33          25
  2010-07-09       79       45          37
  2010-06-21       46       37          26
  2010-06-09       15       13          10


Unresolved regressions
----------------------

Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=18732
Subject		: Radeon HD 4700 needs MSI disabled
Submitter	: Rafael Gandolfi <kaillasse91@hotmail.fr>
Date		: 2010-09-18 12:06 (9 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=18522
Subject		: [REGRESSION] cdrom drive doesn't detect removal
Submitter	: Maxim Levitsky <maximlevitsky@gmail.com>
Date		: 2010-09-12 9:49 (15 days old)
First-Bad-Commit: http://git.kernel.org/linus/6b4517a7913a09d3259bb1d21c9cb300f12294bd
Message-ID	: <1284284969.2928.18.camel@maxim-laptop>
References	: http://marc.info/?l=linux-kernel&m=128428499013930&w=2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=18202
Subject		: Microphone levels too low
Submitter	: Alexander Hunziker <alex.hunziker@rega-sense.ch>
Date		: 2010-09-09 22:20 (18 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=18032
Subject		: No sound on headphone jack
Submitter	: Alexander Hunziker <alex.hunziker@rega-sense.ch>
Date		: 2010-09-07 21:45 (20 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=17812
Subject		: Kernel completely frozen when memory is full
Submitter	: Mickey86 <mikael.cordon@gmail.com>
Date		: 2010-09-05 13:09 (22 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=17772
Subject		: Unable to locate IOAPIC for GSI *
Submitter	: zersaa <zersaa@gmail.com>
Date		: 2010-09-04 21:28 (23 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=17261
Subject		: Freezes on bootup
Submitter	: Dan Dart <dandart@googlemail.com>
Date		: 2010-08-29 09:00 (29 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16691
Subject		: IPW5100: iwlagn broken with 2.6.34.x to 2.6.35.2 update
Submitter	: Can Celasun <dcelasun@gmail.com>
Date		: 2010-08-21 08:28 (37 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16633
Subject		: ath5k + 2.6.35 x86 + hostapd - Failed to set channel
Submitter	: NiTr0 <nitr0@seti.kr.ua>
Date		: 2010-08-19 19:37 (39 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16614
Subject		: [2.6.35] usb 2.0 em28xx  kernel panic general protection fault: 0000 [#1] SMP          RIP: 0010:[<ffffffffa004fbc5>]  [<ffffffffa004fbc5>] em28xx_isoc_copy_vbi+0x62e/0x812 [em28xx]
Submitter	: Sander Eikelenboom <linux@eikelenboom.it>
Date		: 2010-08-10 22:12 (48 days old)
Message-ID	: <61936849.20100811001257@eikelenboom.it>
References	: http://marc.info/?l=linux-kernel&m=128152075830927&w=2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16562
Subject		: 2.6.35: cpu_idle bug report / on i7 870 cpu (x86_64)
Submitter	: Justin Piszcz <jpiszcz@lucidpixels.com>
Date		: 2010-08-06 22:09 (52 days old)
Message-ID	: <alpine.DEB.2.00.1008061800530.5241@p34.internal.lan>
References	: http://marc.info/?l=linux-kernel&m=128113260904048&w=2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16549
Subject		: 2.6.35: suspicious rcu_dereference_check() usage
Submitter	: Vladislav Bolkhovitin <vst@vlnb.net>
Date		: 2010-08-04 10:56 (54 days old)
Message-ID	: <4C594740.1090608@vlnb.net>
References	: http://marc.info/?l=linux-kernel&m=128091938215177&w=2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16525
Subject		: unexpected high load since 2.6.35
Submitter	: MadLoisae@gmx.net <MadLoisae@gmx.net>
Date		: 2010-08-02 20:53 (56 days old)
Message-ID	: <4C573041.1070103@gmx.net>
References	: http://marc.info/?l=linux-kernel&m=128078243726655&w=2
		  http://lkml.org/lkml/2010/9/14/105


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16515
Subject		: [bisected] Radeon rv280 can't boot on kernel 2.6.35.
Submitter	: Albert Gall <ss3vdr@gmail.com>
Date		: 2010-08-04 16:10 (54 days old)
First-Bad-Commit: http://git.kernel.org/linus/https://bugzilla.kernel.org/attachment.cgi?id=27350
Handled-By	: Alex Deucher <alexdeucher@gmail.com>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16488
Subject		: [i915] Framebuffer ID error after suspend/hibernate leading to X crash
Submitter	: Milan Bouchet-Valat <nalimilan@club.fr>
Date		: 2010-08-01 08:55 (57 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16462
Subject		: unable to connect to AP on legal channel 13
Submitter	: Daniel J Blueman <daniel.blueman@gmail.com>
Date		: 2010-07-25 17:06 (64 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16458
Subject		: Bluetooth disabled after resume
Submitter	: AttilaN <attila123456@gmail.com>
Date		: 2010-07-25 09:33 (64 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16380
Subject		: Loop devices act strangely in 2.6.35
Submitter	: Artem S. Tashkinov <t.artem@mailcity.com>
Date		: 2010-07-13 23:21 (76 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16322
Subject		: WARNING: at /arch/x86/include/asm/processor.h:1005 read_measured_perf_ctrs+0x5a/0x70()
Submitter	: boris64 <bugzilla.kernel.org@boris64.net>
Date		: 2010-07-01 13:54 (88 days old)
Handled-By	: H. Peter Anvin <hpa@zytor.com>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16265
Subject		: Why is kslowd accumulating so much CPU time?
Submitter	: Theodore Ts'o <tytso@mit.edu>
Date		: 2010-06-09 18:36 (110 days old)
First-Bad-Commit: http://git.kernel.org/linus/fbf81762e385d3d45acad057b654d56972acf58c
Message-ID	: <E1OMQ88-0002a1-Gb@closure.thunk.org>
References	: http://marc.info/?l=linux-kernel&m=127610857819033&w=4
		  http://bugs.freedesktop.org/show_bug.cgi?id=29536
Handled-By	: Chris Wilson <chris@chris-wilson.co.uk>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16221
Subject		: 2.6.35-rc2-git5 -- [drm:drm_mode_getfb] *ERROR* invalid framebuffer id
Submitter	: Miles Lane <miles.lane@gmail.com>
Date		: 2010-06-11 20:31 (108 days old)
Message-ID	: <AANLkTim0jVRyqkwlGOcrg_XTvUQwcBYfWJX-aRzkkrLG@mail.gmail.com>
References	: http://marc.info/?l=linux-kernel&m=127628828119623&w=2


Regressions with patches
------------------------

Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16396
Subject		: [bisected] resume from suspend freezes system
Submitter	: tomas m <tmezzadra@gmail.com>
Date		: 2010-07-15 02:32 (74 days old)
Handled-By	: Rafael J. Wysocki <rjw@sisk.pl>
Patch		: https://bugzilla.kernel.org/attachment.cgi?id=31422


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16312
Subject		: WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty
Submitter	: Zdenek Kabelac <zdenek.kabelac@gmail.com>
Date		: 2010-06-28 9:40 (91 days old)
Message-ID	: <AANLkTin24fr5O4_q5Xbo9Y_NKkEmtcp6Hgmr9_4qXaFz@mail.gmail.com>
References	: http://marc.info/?l=linux-kernel&m=127771804806465&w=2
		  http://lkml.indiana.edu/hypermail/linux/kernel/1007.3/00884.html
Handled-By	: Jan Kara <jack@suse.cz>
		  Jan Kara <jack@suse.cz>
Patch		: https://bugzilla.kernel.org/attachment.cgi?id=30282


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16228
Subject		: BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)
Submitter	: Brian Bloniarz <brian.bloniarz@gmail.com>
Date		: 2010-06-16 17:57 (103 days old)
Handled-By	: Bjorn Helgaas <bjorn.helgaas@hp.com>
Patch		: https://patchwork.kernel.org/patch/189182/
		  https://patchwork.kernel.org/patch/189232/
		  https://patchwork.kernel.org/patch/189242/
		  https://patchwork.kernel.org/patch/189252/


For details, please visit the bug entries and follow the links given in
references.

As you can see, there is a Bugzilla entry for each of the listed regressions.
There also is a Bugzilla entry used for tracking the regressions introduced
between 2.6.34 and 2.6.35, unresolved as well as resolved, at:

http://bugzilla.kernel.org/show_bug.cgi?id=16055

Please let the tracking team know if there are any Bugzilla entries that
should be added to the list in there.

Thanks!

[Bug #16221] 2.6.35-rc2-git5 -- [drm:drm_mode_getfb] *ERROR* invalid framebuffer id

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16221
Subject		: 2.6.35-rc2-git5 -- [drm:drm_mode_getfb] *ERROR* invalid framebuffer id
Submitter	: Miles Lane <miles.lane@gmail.com>
Date		: 2010-06-11 20:31 (108 days old)
Message-ID	: <AANLkTim0jVRyqkwlGOcrg_XTvUQwcBYfWJX-aRzkkrLG@mail.gmail.com>
References	: http://marc.info/?l=linux-kernel&m=127628828119623&w=2

[Bug #16228] BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16228
Subject		: BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)
Submitter	: Brian Bloniarz <brian.bloniarz@gmail.com>
Date		: 2010-06-16 17:57 (103 days old)
Handled-By	: Bjorn Helgaas <bjorn.helgaas@hp.com>
Patch		: https://patchwork.kernel.org/patch/189182/
		  https://patchwork.kernel.org/patch/189232/
		  https://patchwork.kernel.org/patch/189242/
		  https://patchwork.kernel.org/patch/189252/

[Bug #16265] Why is kslowd accumulating so much CPU time?

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16265
Subject		: Why is kslowd accumulating so much CPU time?
Submitter	: Theodore Ts'o <tytso@mit.edu>
Date		: 2010-06-09 18:36 (110 days old)
First-Bad-Commit: http://git.kernel.org/linus/fbf81762e385d3d45acad057b654d56972acf58c
Message-ID	: <E1OMQ88-0002a1-Gb@closure.thunk.org>
References	: http://marc.info/?l=linux-kernel&m=127610857819033&w=4
		  http://bugs.freedesktop.org/show_bug.cgi?id=29536
Handled-By	: Chris Wilson <chris@chris-wilson.co.uk>

[Bug #16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16312
Subject		: WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty
Submitter	: Zdenek Kabelac <zdenek.kabelac@gmail.com>
Date		: 2010-06-28 9:40 (91 days old)
Message-ID	: <AANLkTin24fr5O4_q5Xbo9Y_NKkEmtcp6Hgmr9_4qXaFz@mail.gmail.com>
References	: http://marc.info/?l=linux-kernel&m=127771804806465&w=2
		  http://lkml.indiana.edu/hypermail/linux/kernel/1007.3/00884.html
Handled-By	: Jan Kara <jack@suse.cz>
		  Jan Kara <jack@suse.cz>
Patch		: https://bugzilla.kernel.org/attachment.cgi?id=30282

[Bug #16322] WARNING: at /arch/x86/include/asm/processor.h:1005 read_measured_perf_ctrs+0x5a/0x70()

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16322
Subject		: WARNING: at /arch/x86/include/asm/processor.h:1005 read_measured_perf_ctrs+0x5a/0x70()
Submitter	: boris64 <bugzilla.kernel.org@boris64.net>
Date		: 2010-07-01 13:54 (88 days old)
Handled-By	: H. Peter Anvin <hpa@zytor.com>

[Bug #16396] [bisected] resume from suspend freezes system

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16396
Subject		: [bisected] resume from suspend freezes system
Submitter	: tomas m <tmezzadra@gmail.com>
Date		: 2010-07-15 02:32 (74 days old)
Handled-By	: Rafael J. Wysocki <rjw@sisk.pl>
Patch		: https://bugzilla.kernel.org/attachment.cgi?id=31422

[Bug #16458] Bluetooth disabled after resume

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16458
Subject		: Bluetooth disabled after resume
Submitter	: AttilaN <attila123456@gmail.com>
Date		: 2010-07-25 09:33 (64 days old)

[Bug #16380] Loop devices act strangely in 2.6.35

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16380
Subject		: Loop devices act strangely in 2.6.35
Submitter	: Artem S. Tashkinov <t.artem@mailcity.com>
Date		: 2010-07-13 23:21 (76 days old)

[Bug #16462] unable to connect to AP on legal channel 13

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16462
Subject		: unable to connect to AP on legal channel 13
Submitter	: Daniel J Blueman <daniel.blueman@gmail.com>
Date		: 2010-07-25 17:06 (64 days old)

[Bug #16515] [bisected] Radeon rv280 can't boot on kernel 2.6.35.

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16515
Subject		: [bisected] Radeon rv280 can't boot on kernel 2.6.35.
Submitter	: Albert Gall <ss3vdr@gmail.com>
Date		: 2010-08-04 16:10 (54 days old)
First-Bad-Commit: http://git.kernel.org/linus/https://bugzilla.kernel.org/attachment.cgi?id=27350
Handled-By	: Alex Deucher <alexdeucher@gmail.com>

[Bug #16488] [i915] Framebuffer ID error after suspend/hibernate leading to X crash

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16488
Subject		: [i915] Framebuffer ID error after suspend/hibernate leading to X crash
Submitter	: Milan Bouchet-Valat <nalimilan@club.fr>
Date		: 2010-08-01 08:55 (57 days old)

[Bug #16614] [2.6.35] usb 2.0 em28xx kernel panic general protection fault: 0000 [#1] SMP RIP: 0010:[<ffffffffa004fbc5>] [<ffffffffa004fbc5>] em28xx_isoc_copy_vbi+0x62e/0x812 [em28xx]

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16614
Subject		: [2.6.35] usb 2.0 em28xx  kernel panic general protection fault: 0000 [#1] SMP          RIP: 0010:[<ffffffffa004fbc5>]  [<ffffffffa004fbc5>] em28xx_isoc_copy_vbi+0x62e/0x812 [em28xx]
Submitter	: Sander Eikelenboom <linux@eikelenboom.it>
Date		: 2010-08-10 22:12 (48 days old)
Message-ID	: <61936849.20100811001257@eikelenboom.it>
References	: http://marc.info/?l=linux-kernel&m=128152075830927&w=2

[Bug #16549] 2.6.35: suspicious rcu_dereference_check() usage

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16549
Subject		: 2.6.35: suspicious rcu_dereference_check() usage
Submitter	: Vladislav Bolkhovitin <vst@vlnb.net>
Date		: 2010-08-04 10:56 (54 days old)
Message-ID	: <4C594740.1090608@vlnb.net>
References	: http://marc.info/?l=linux-kernel&m=128091938215177&w=2

[Bug #16562] 2.6.35: cpu_idle bug report / on i7 870 cpu (x86_64)

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16562
Subject		: 2.6.35: cpu_idle bug report / on i7 870 cpu (x86_64)
Submitter	: Justin Piszcz <jpiszcz@lucidpixels.com>
Date		: 2010-08-06 22:09 (52 days old)
Message-ID	: <alpine.DEB.2.00.1008061800530.5241@p34.internal.lan>
References	: http://marc.info/?l=linux-kernel&m=128113260904048&w=2

[Bug #16525] unexpected high load since 2.6.35

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16525
Subject		: unexpected high load since 2.6.35
Submitter	: MadLoisae@gmx.net <MadLoisae@gmx.net>
Date		: 2010-08-02 20:53 (56 days old)
Message-ID	: <4C573041.1070103@gmx.net>
References	: http://marc.info/?l=linux-kernel&m=128078243726655&w=2
		  http://lkml.org/lkml/2010/9/14/105

[Bug #16691] IPW5100: iwlagn broken with 2.6.34.x to 2.6.35.2 update

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16691
Subject		: IPW5100: iwlagn broken with 2.6.34.x to 2.6.35.2 update
Submitter	: Can Celasun <dcelasun@gmail.com>
Date		: 2010-08-21 08:28 (37 days old)

[Bug #16633] ath5k + 2.6.35 x86 + hostapd - Failed to set channel

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16633
Subject		: ath5k + 2.6.35 x86 + hostapd - Failed to set channel
Submitter	: NiTr0 <nitr0@seti.kr.ua>
Date		: 2010-08-19 19:37 (39 days old)

[Bug #17261] Freezes on bootup

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=17261
Subject		: Freezes on bootup
Submitter	: Dan Dart <dandart@googlemail.com>
Date		: 2010-08-29 09:00 (29 days old)

[Bug #17772] Unable to locate IOAPIC for GSI *

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=17772
Subject		: Unable to locate IOAPIC for GSI *
Submitter	: zersaa <zersaa@gmail.com>
Date		: 2010-09-04 21:28 (23 days old)

[Bug #18032] No sound on headphone jack

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=18032
Subject		: No sound on headphone jack
Submitter	: Alexander Hunziker <alex.hunziker@rega-sense.ch>
Date		: 2010-09-07 21:45 (20 days old)

[Bug #17812] Kernel completely frozen when memory is full

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=17812
Subject		: Kernel completely frozen when memory is full
Submitter	: Mickey86 <mikael.cordon@gmail.com>
Date		: 2010-09-05 13:09 (22 days old)

[Bug #18202] Microphone levels too low

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=18202
Subject		: Microphone levels too low
Submitter	: Alexander Hunziker <alex.hunziker@rega-sense.ch>
Date		: 2010-09-09 22:20 (18 days old)

[Bug #18522] [REGRESSION] cdrom drive doesn't detect removal

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=18522
Subject		: [REGRESSION] cdrom drive doesn't detect removal
Submitter	: Maxim Levitsky <maximlevitsky@gmail.com>
Date		: 2010-09-12 9:49 (15 days old)
First-Bad-Commit: http://git.kernel.org/linus/6b4517a7913a09d3259bb1d21c9cb300f12294bd
Message-ID	: <1284284969.2928.18.camel@maxim-laptop>
References	: http://marc.info/?l=linux-kernel&m=128428499013930&w=2

[Bug #18732] Radeon HD 4700 needs MSI disabled

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=18732
Subject		: Radeon HD 4700 needs MSI disabled
Submitter	: Rafael Gandolfi <kaillasse91@hotmail.fr>
Date		: 2010-09-18 12:06 (9 days old)

Re: [Bug #16228] BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)

[Bjorn Helgaas]

On Sunday, September 26, 2010 02:33:08 pm Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of regressions introduced between 2.6.34 and 2.6.35.
> 
> The following bug entry is on the current list of known regressions
> introduced between 2.6.34 and 2.6.35.  Please verify if it still should
> be listed and let the tracking team know (either way).
> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16228
> Subject		: BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)
> Submitter	: Brian Bloniarz <brian.bloniarz@gmail.com>
> Date		: 2010-06-16 17:57 (103 days old)
> Handled-By	: Bjorn Helgaas <bjorn.helgaas@hp.com>
> Patch		: https://patchwork.kernel.org/patch/189182/
> 		  https://patchwork.kernel.org/patch/189232/
> 		  https://patchwork.kernel.org/patch/189242/
> 		  https://patchwork.kernel.org/patch/189252/

We plan to merge this patches soon after the 2.6.36 release, so
this regression will still exist in 2.6.36.

Re: [Bug #16228] BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)

[Rafael J. Wysocki]

On Monday, September 27, 2010, Bjorn Helgaas wrote:
> On Sunday, September 26, 2010 02:33:08 pm Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of regressions introduced between 2.6.34 and 2.6.35.
> > 
> > The following bug entry is on the current list of known regressions
> > introduced between 2.6.34 and 2.6.35.  Please verify if it still should
> > be listed and let the tracking team know (either way).
> > 
> > 
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16228
> > Subject		: BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)
> > Submitter	: Brian Bloniarz <brian.bloniarz@gmail.com>
> > Date		: 2010-06-16 17:57 (103 days old)
> > Handled-By	: Bjorn Helgaas <bjorn.helgaas@hp.com>
> > Patch		: https://patchwork.kernel.org/patch/189182/
> > 		  https://patchwork.kernel.org/patch/189232/
> > 		  https://patchwork.kernel.org/patch/189242/
> > 		  https://patchwork.kernel.org/patch/189252/
> 
> We plan to merge this patches soon after the 2.6.36 release, so
> this regression will still exist in 2.6.36.

Thanks for the info.

The bug is going to be listed until 2.6.36 is released, then.

Rafael

[Bug #16228] BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16228
Subject		: BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)
Submitter	: Brian Bloniarz <brian.bloniarz@gmail.com>
Date		: 2010-06-16 17:57 (124 days old)
Handled-By	: Bjorn Helgaas <bjorn.helgaas@hp.com>
Patch		: https://patchwork.kernel.org/patch/189182/
		  https://patchwork.kernel.org/patch/189232/
		  https://patchwork.kernel.org/patch/189242/
		  https://patchwork.kernel.org/patch/189252/

[Bug #16228] BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16228
Subject		: BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)
Submitter	: Brian Bloniarz <brian.bloniarz@gmail.com>
Date		: 2010-06-16 17:57 (117 days old)
Handled-By	: Bjorn Helgaas <bjorn.helgaas@hp.com>
Patch		: https://patchwork.kernel.org/patch/189182/
		  https://patchwork.kernel.org/patch/189232/
		  https://patchwork.kernel.org/patch/189242/
		  https://patchwork.kernel.org/patch/189252/

[Bug #16228] BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16228
Subject		: BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)
Submitter	: Brian Bloniarz <brian.bloniarz@gmail.com>
Date		: 2010-06-16 17:57 (110 days old)
Handled-By	: Bjorn Helgaas <bjorn.helgaas@hp.com>
Patch		: https://patchwork.kernel.org/patch/189182/
		  https://patchwork.kernel.org/patch/189232/
		  https://patchwork.kernel.org/patch/189242/
		  https://patchwork.kernel.org/patch/189252/

Re: [Bug #16228] BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)

[Rafael J. Wysocki]

On Monday, September 20, 2010, Bjorn Helgaas wrote:
> On Monday, September 20, 2010 01:57:17 pm Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of regressions introduced between 2.6.34 and 2.6.35.
> > 
> > The following bug entry is on the current list of known regressions
> > introduced between 2.6.34 and 2.6.35.  Please verify if it still should
> > be listed and let the tracking team know (either way).
> > 
> > 
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16228
> > Subject		: BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)
> > Submitter	: Brian Bloniarz <brian.bloniarz@gmail.com>
> > Date		: 2010-06-16 17:57 (97 days old)
> > Handled-By	: Bjorn Helgaas <bjorn.helgaas@hp.com>
> 
> The four patches here: https://patchwork.kernel.org/patch/189182/
> should resolve this problem.  They've been tested by Stefan Becker.

Thanks, bug entry updated with the patch information.

Rafael

Re: [Bug #16228] BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)

[Bjorn Helgaas]

On Monday, September 20, 2010 01:57:17 pm Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of regressions introduced between 2.6.34 and 2.6.35.
> 
> The following bug entry is on the current list of known regressions
> introduced between 2.6.34 and 2.6.35.  Please verify if it still should
> be listed and let the tracking team know (either way).
> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16228
> Subject		: BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)
> Submitter	: Brian Bloniarz <brian.bloniarz@gmail.com>
> Date		: 2010-06-16 17:57 (97 days old)
> Handled-By	: Bjorn Helgaas <bjorn.helgaas@hp.com>

The four patches here: https://patchwork.kernel.org/patch/189182/
should resolve this problem.  They've been tested by Stefan Becker.

Bjorn

[Bug #16228] BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16228
Subject		: BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)
Submitter	: Brian Bloniarz <brian.bloniarz@gmail.com>
Date		: 2010-06-16 17:57 (97 days old)
Handled-By	: Bjorn Helgaas <bjorn.helgaas@hp.com>

[Bug #16228] BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16228
Subject		: BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)
Submitter	: Brian Bloniarz <phunge0@hotmail.com>
Date		: 2010-06-16 17:57 (89 days old)
Handled-By	: Bjorn Helgaas <bjorn.helgaas@hp.com>

[Bug #16228] BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16228
Subject		: BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)
Submitter	: Brian Bloniarz <phunge0@hotmail.com>
Date		: 2010-06-16 17:57 (75 days old)
Handled-By	: Bjorn Helgaas <bjorn.helgaas@hp.com>

Re: [Bug #16228] BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)

[Bjorn Helgaas]

On Sunday, August 01, 2010 07:52:16 am Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a summary report
> of recent regressions.
> 
> The following bug entry is on the current list of known regressions
> from 2.6.34.  Please verify if it still should be listed and let the tracking team
> know (either way).
> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16228
> Subject		: BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)
> Submitter	: Brian Bloniarz <phunge0@hotmail.com>
> Date		: 2010-06-16 17:57 (47 days old)
> Handled-By	: Bjorn Helgaas <bjorn.helgaas@hp.com>

This bug should still be on the list.  I hope to work on it this week.

Bjorn

[Bug #16228] BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)

[Rafael J. Wysocki]

This message has been generated automatically as a part of a summary report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.34.  Please verify if it still should be listed and let the tracking team
know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16228
Subject		: BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)
Submitter	: Brian Bloniarz <phunge0@hotmail.com>
Date		: 2010-06-16 17:57 (47 days old)
Handled-By	: Bjorn Helgaas <bjorn.helgaas@hp.com>

[Bug #16228] BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)

[Rafael J. Wysocki]

This message has been generated automatically as a part of a summary report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.34.  Please verify if it still should be listed and let the tracking team
know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16228
Subject		: BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)
Submitter	: Brian Bloniarz <phunge0@hotmail.com>
Date		: 2010-06-16 17:57 (38 days old)
Handled-By	: Bjorn Helgaas <bjorn.helgaas@hp.com>

[Bug #16228] BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)

[Rafael J. Wysocki]

This message has been generated automatically as a part of a summary report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.34.  Please verify if it still should be listed and let the tracking team
know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16228
Subject		: BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)
Submitter	: Brian Bloniarz <phunge0@hotmail.com>
Date		: 2010-06-16 17:57 (23 days old)
Handled-By	: Bjorn Helgaas <bjorn.helgaas@hp.com>

[Bug #16228] BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)

[Rafael J. Wysocki]

This message has been generated automatically as a part of a summary report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.34.  Please verify if it still should be listed and let the tracking team
know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16228
Subject		: BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)
Submitter	: Brian Bloniarz <phunge0@hotmail.com>
Date		: 2010-06-16 17:57 (5 days old)

Re: [Bug 16228] BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)

[Yinghai Lu]

On 06/17/2010 09:37 AM, bugzilla-daemon@bugzilla.kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=16228
> 
> 
> Bjorn Helgaas <bjorn.helgaas@hp.com> changed:
> 
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                  CC|                            |yinghai@kernel.org
> 
> 
> 
> 
> --- Comment #8 from Bjorn Helgaas <bjorn.helgaas@hp.com>  2010-06-17 16:37:42 ---
> That's perfect, thanks!
> 
> The E820 memory map from BIOS reports a range that overlaps the first
> megabyte (0xbff00000-0xbfffffff) of that host bridge window:
> 
>   BIOS-e820: 0000000000100000 - 00000000bfdf9c00 (usable)
>   BIOS-e820: 00000000bfdf9c00 - 00000000bfe4bc00 (ACPI NVS)
>   BIOS-e820: 00000000bfe4bc00 - 00000000bfe4dc00 (ACPI data)
>   BIOS-e820: 00000000bfe4dc00 - 00000000c0000000 (reserved)
>   pci_root PNP0A03:00: host bridge window [mem 0xbff00000-0xdfffffff]
> 
> The 0x100000-0xbfdf9c00 range is system RAM, and I would expect that
> the ACPI NVS and data area is also RAM, and the last reserved piece is
> probably RAM, too, because RAM tends to end at nicely aligned boundaries.
> 
> Table 14-1 in the ACPI 4.0 spec says "reserved" ranges from the E820
> table are "unsuitable for a standard device to use as a device memory
> space."
> 
> I think maybe Linux should regard those reserved ranges as unavailable
> for allocation to PCI devices, even if they happen to be included in a
> host bridge window.  What do you think, Yinghai?

for above 1M area, 
current kernel will honor setting from HW register and later will use insert_resource_expand_to_fit()
with e820 reserved entries.
so in this case will have one big 0xbfe4dc00 - 0xe000000 reserved entry in /proc/iomem as parent of
0xbff00000 - 0xe0000000

Sane BIOS should not put allocated range to PCI bridge/device into e820 table as reserved entries.

But there IS some BIOS doing that.
So Linus decided to trust setting from PCI bar at first.

later for pci_assign_unsigned, We should avoid those range.

one solution is expanding my one of old version for below 1M handling to:
use reserve_region_with_split instead.
will get /proc/iomem
bfe4dc00 - bfefffff reserved
bff00000 - dfffffff PCI BUS #00
  bff00000 - bfffffff reserved
  ...

so will use bff0000 - bfffffff reserved as holder to prevent those range to be allocated to unassigned devices.
reserve_region_with_split need to need be updated a little bit to make sure it will not put holder on range with children already.

something like this

Subject: [PATCH] x86, resource: Add reserve_region_with_split_check_child()

It will cover the whole region to BUSY, except that some regions that have
children under them.

those children normally is PCI bar but it is falling into E820_RESERVED.
We can not put BUSY on them, otherwise driver can not use pci_request_region()
later

/proc/iomem will have
00010000-00094fff : System RAM
00095000-0009ffff : reserved
000a0000-000bffff : PCI Bus 0000:00
  000a0000-000bffff : reserved
000c0000-000cffff : reserved
000d0000-000dffff : PCI Bus 0000:00
  000d0000-000dffff : reserved
000e0000-000fffff : reserved

-v2: Add function pointer to put string comparing with caller
-v3: expand to use it above 1M resources.

Tested-by: Guenter Roeck <guenter.roeck@ericsson.com>
Tested-by: Andy Isaacson <adi@hexapodia.org>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>

---
 arch/x86/kernel/e820.c |   15 ++++++++++++---
 include/linux/ioport.h |    3 +++
 kernel/resource.c      |   29 ++++++++++++++++++++++++-----
 3 files changed, 39 insertions(+), 8 deletions(-)

Index: linux-2.6/arch/x86/kernel/e820.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/e820.c
+++ linux-2.6/arch/x86/kernel/e820.c
@@ -1094,7 +1094,7 @@ void __init e820_reserve_resources(void)
 		 * pci device BAR resource and insert them later in
 		 * pcibios_resource_survey()
 		 */
-		if (e820.map[i].type != E820_RESERVED || res->start < (1ULL<<20)) {
+		if (e820.map[i].type != E820_RESERVED) {
 			res->flags |= IORESOURCE_BUSY;
 			insert_resource(&iomem_resource, res);
 		}
@@ -1128,6 +1128,14 @@ static unsigned long ram_alignment(resou
 
 #define MAX_RESOURCE_SIZE ((resource_size_t)-1)
 
+static int __init check_func(struct resource *cf)
+{
+	if (strstr(cf->name, "PCI Bus"))
+		return 1;
+
+        return 0;
+}
+
 void __init e820_reserve_resources_late(void)
 {
 	int i;
@@ -1135,8 +1143,9 @@ void __init e820_reserve_resources_late(
 
 	res = e820_res;
 	for (i = 0; i < e820.nr_map; i++) {
-		if (!res->parent && res->end)
-			insert_resource_expand_to_fit(&iomem_resource, res);
+		if (!res->parent && res->end) {
+			reserve_region_with_split_check_child(&iomem_resource, res->start, res->end, res->name, check_func);
+		}
 		res++;
 	}
 
Index: linux-2.6/include/linux/ioport.h
===================================================================
--- linux-2.6.orig/include/linux/ioport.h
+++ linux-2.6/include/linux/ioport.h
@@ -120,6 +120,9 @@ void release_child_resources(struct reso
 extern void reserve_region_with_split(struct resource *root,
 			     resource_size_t start, resource_size_t end,
 			     const char *name);
+void reserve_region_with_split_check_child(struct resource *root,
+			     resource_size_t start, resource_size_t end,
+			     const char *name, int (*check_func)(struct resource *cf));
 extern struct resource *insert_resource_conflict(struct resource *parent, struct resource *new);
 extern int insert_resource(struct resource *parent, struct resource *new);
 extern void insert_resource_expand_to_fit(struct resource *root, struct resource *new);
Index: linux-2.6/kernel/resource.c
===================================================================
--- linux-2.6.orig/kernel/resource.c
+++ linux-2.6/kernel/resource.c
@@ -607,9 +607,14 @@ int adjust_resource(struct resource *res
 	return result;
 }
 
+static int __init check_func_nop(struct resource *cf)
+{
+	return 1;
+}
+
 static void __init __reserve_region_with_split(struct resource *root,
 		resource_size_t start, resource_size_t end,
-		const char *name)
+		const char *name, bool check_child, int (*check_func)(struct resource *cf))
 {
 	struct resource *parent = root;
 	struct resource *conflict;
@@ -631,13 +636,18 @@ static void __init __reserve_region_with
 	kfree(res);
 
 	/* conflict covered whole area */
-	if (conflict->start <= start && conflict->end >= end)
+	if (conflict->start <= start && conflict->end >= end) {
+		if (check_child && !conflict->child && check_func(conflict))
+			__reserve_region_with_split(conflict, start, end, name, false, check_func_nop);
 		return;
+	}
 
 	if (conflict->start > start)
-		__reserve_region_with_split(root, start, conflict->start-1, name);
+		__reserve_region_with_split(root, start, conflict->start-1, name, check_child, check_func);
 	if (conflict->end < end)
-		__reserve_region_with_split(root, conflict->end+1, end, name);
+		__reserve_region_with_split(root, conflict->end+1, end, name, check_child, check_func);
+	if (check_child && !conflict->child && check_func(conflict))
+		__reserve_region_with_split(conflict, conflict->start, conflict->end, name, false, check_func_nop);
 }
 
 void __init reserve_region_with_split(struct resource *root,
@@ -645,7 +655,16 @@ void __init reserve_region_with_split(st
 		const char *name)
 {
 	write_lock(&resource_lock);
-	__reserve_region_with_split(root, start, end, name);
+	__reserve_region_with_split(root, start, end, name, false, check_func_nop);
+	write_unlock(&resource_lock);
+}
+
+void __init reserve_region_with_split_check_child(struct resource *root,
+		resource_size_t start, resource_size_t end,
+		const char *name, int (*check_func)(struct resource *cf))
+{
+	write_lock(&resource_lock);
+	__reserve_region_with_split(root, start, end, name, true, check_func);
 	write_unlock(&resource_lock);
 }