From mboxrd@z Thu Jan  1 00:00:00 1970
From: Frans Pop <elendil@planet.nl>
Subject: Re: [RFC][PATCH][0/8] PM: Rework suspend-resume ordering
	to avoid problems with shared interrupts
Date: Sun, 8 Mar 2009 20:28:02 +0100
Message-ID: <200903082028.03720.elendil__17778.0073172928$1236540835$gmane$org@planet.nl>
References: <200902221837.49396.rjw@sisk.pl> <200902221837.49396.rjw@sisk.pl>
	<200903071119.16651.rjw@sisk.pl>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <linux-pm-bounces@lists.linux-foundation.org>
In-reply-To: <200903071119.16651.rjw@sisk.pl>
Content-Disposition: inline
List-Unsubscribe: <https://lists.linux-foundation.org/mailman/listinfo/linux-pm>,
	<mailto:linux-pm-request@lists.linux-foundation.org?subject=unsubscribe>
List-Archive: <http://lists.linux-foundation.org/pipermail/linux-pm>
List-Post: <mailto:linux-pm@lists.linux-foundation.org>
List-Help: <mailto:linux-pm-request@lists.linux-foundation.org?subject=help>
List-Subscribe: <https://lists.linux-foundation.org/mailman/listinfo/linux-pm>,
	<mailto:linux-pm-request@lists.linux-foundation.org?subject=subscribe>
Sender: linux-pm-bounces@lists.linux-foundation.org
Errors-To: linux-pm-bounces@lists.linux-foundation.org
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: linux-pm@lists.linux-foundation.org, torvalds@linux-foundation.org, linux-kernel@vger.kernel.org
List-Id: linux-pm@vger.kernel.org

(Most CCs dropped.)

Hi Rafael,

Rafael J. Wysocki wrote:
> The following patches modifiy the way in which we handle disabling
> interrupts during suspend and enabling them during resume.  They also
> change the ordering of the core suspend and hibernation code to take
> advantage of the new approach to the interrupts and modify the PCI PM
> core to avoid a few problems.

I've given this series a try on my HP 2510p. I've seen no regressions
with suspend to RAM.

Below is a diff between suspend/resume dmesg from before (based on rc5)
and after (rc7 + series) the patch, with some comments.
Nothing looks really wrong, but there are some surprising changes.

Essentially JFYI though.

Cheers,
FJP

    PM: Syncing filesystems ... done.
    Freezing user space processes ... (elapsed 0.00 seconds) done.
    Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done.
    Suspending console(s) (use no_console_suspend to debug)
    sd 0:0:0:0: [sda] Synchronizing SCSI cache
    sd 0:0:0:0: [sda] Stopping disk
    ACPI handle has no context!
    ACPI handle has no context!
    sdhci-pci 0000:02:06.2: PME# disabled
    sdhci-pci 0000:02:06.2: PCI INT C disabled
    ACPI handle has no context!
    ACPI handle has no context!
# Bogus: result of using wireless instead of wired networking.
   +iwlagn 0000:10:00.0: PCI INT A disabled
    ata2: port disabled. ignoring.
    ata_piix 0000:00:1f.1: PCI INT A disabled
    ehci_hcd 0000:00:1d.7: PCI INT A disabled
    ehci_hcd 0000:00:1d.7: PME# disabled
    uhci_hcd 0000:00:1d.2: PCI INT C disabled
    uhci_hcd 0000:00:1d.1: PCI INT B disabled
    uhci_hcd 0000:00:1d.0: PCI INT A disabled
    HDA Intel 0000:00:1b.0: PCI INT A disabled
    HDA Intel 0000:00:1b.0: power state changed by ACPI to D3
    ehci_hcd 0000:00:1a.7: PCI INT C disabled
    ehci_hcd 0000:00:1a.7: PME# disabled
    uhci_hcd 0000:00:1a.1: PCI INT B disabled
    uhci_hcd 0000:00:1a.0: PCI INT A disabled
    e1000e 0000:00:19.0: PME# enabled
    e1000e 0000:00:19.0: wake-up capability enabled by ACPI
    e1000e 0000:00:19.0: PME# enabled
    e1000e 0000:00:19.0: wake-up capability enabled by ACPI
    e1000e 0000:00:19.0: PCI INT A disabled
    ACPI handle has no context!
# This has moved up a bit. Looks more logical.
   +ricoh-mmc: Suspending.
   +ricoh-mmc: Controller is now re-enabled.
    ACPI: Preparing to enter system sleep state S3
    Disabling non-boot CPUs ...
    CPU 1 is now offline
    SMP alternatives: switching to UP code
    CPU0 attaching NULL sched-domain.
    CPU1 attaching NULL sched-domain.
    CPU0 attaching NULL sched-domain.
    CPU1 is down
   -ricoh-mmc: Suspending.
   -ricoh-mmc: Controller is now re-enabled.
    Extended CMOS year: 2000

    Back to C!
   +CPU0: Thermal monitoring enabled (TM2)
    Extended CMOS year: 2000
# This whole block has moved up before early config space restores.
# No changes in the block itself.
   +Enabling non-boot CPUs ...
   +SMP alternatives: switching to SMP code
   +Booting processor 1 APIC 0x1 ip 0x6000
   +Initializing CPU#1
   +Calibrating delay using timer specific routine.. 2660.04 BogoMIPS (lpj=5320097)
   +CPU: L1 I cache: 32K, L1 D cache: 32K
   +CPU: L2 cache: 2048K
   +[ds] using Core 2/Atom configuration
   +CPU: Physical Processor ID: 0
   +CPU: Processor Core ID: 1
   +CPU1: Thermal monitoring enabled (TM2)
   +CPU1: Intel(R) Core(TM)2 Duo CPU     U7700  @ 1.33GHz stepping 0d
   +CPU0 attaching NULL sched-domain.
   +Switched to high resolution mode on CPU 1
   +CPU0 attaching sched-domain:
   + domain 0: span 0-1 level MC
   +  groups: 0 1
   +CPU1 attaching sched-domain:
   + domain 0: span 0-1 level MC
   +  groups: 1 0
   +CPU1 is up
   +ACPI: Waking up from system sleep state S3
    pci 0000:00:02.0: restoring config space at offset 0x8 (was 0x1, writing 0x2001)
# These don't need restoring anymore?
   -pci 0000:00:02.1: restoring config space at offset 0x4 (was 0x4, writing 0xe0500004)
   -pci 0000:00:02.1: restoring config space at offset 0x1 (was 0x900000, writing 0x900007)
   -pci 0000:00:03.0: restoring config space at offset 0xf (was 0x100, writing 0x1ff)
   -pci 0000:00:03.0: restoring config space at offset 0x4 (was 0xfed12004, writing 0xe0600004)
   -pci 0000:00:03.2: restoring config space at offset 0xf (was 0x300, writing 0x30b)
   -pci 0000:00:03.2: restoring config space at offset 0x8 (was 0x1, writing 0x2031)
   -pci 0000:00:03.2: restoring config space at offset 0x7 (was 0x1, writing 0x2021)
   -pci 0000:00:03.2: restoring config space at offset 0x6 (was 0x1, writing 0x2019)
   -pci 0000:00:03.2: restoring config space at offset 0x5 (was 0x1, writing 0x2011)
   -pci 0000:00:03.2: restoring config space at offset 0x4 (was 0x1, writing 0x2009)
   -pci 0000:00:03.2: restoring config space at offset 0x1 (was 0xb00000, writing 0xb00001)
    serial 0000:00:03.3: restoring config space at offset 0xf (was 0x200, writing 0x20a)
    serial 0000:00:03.3: restoring config space at offset 0x5 (was 0x0, writing 0xe0601000)
    serial 0000:00:03.3: restoring config space at offset 0x4 (was 0x1, writing 0x2041)
    serial 0000:00:03.3: restoring config space at offset 0x1 (was 0xb00000, writing 0xb00007)
    e1000e 0000:00:19.0: restoring config space at offset 0xf (was 0x100, writing 0x10b)
    e1000e 0000:00:19.0: restoring config space at offset 0x6 (was 0x1, writing 0x2061)
    e1000e 0000:00:19.0: restoring config space at offset 0x5 (was 0x0, writing 0xe0640000)
    e1000e 0000:00:19.0: restoring config space at offset 0x1 (was 0x100000, writing 0x100007)
# These have moved down to late resume.
   -uhci_hcd 0000:00:1a.0: restoring config space at offset 0xf (was 0x100, writing 0x10a)
   -uhci_hcd 0000:00:1a.0: restoring config space at offset 0x8 (was 0x1, writing 0x2081)
   -uhci_hcd 0000:00:1a.0: restoring config space at offset 0x1 (was 0x2800000, writing 0x2800001)
   -uhci_hcd 0000:00:1a.1: restoring config space at offset 0xf (was 0x200, writing 0x20a)
   -uhci_hcd 0000:00:1a.1: restoring config space at offset 0x8 (was 0x1, writing 0x20a1)
   -uhci_hcd 0000:00:1a.1: restoring config space at offset 0x1 (was 0x2800000, writing 0x2800001)
    ehci_hcd 0000:00:1a.7: restoring config space at offset 0xf (was 0x300, writing 0x30b)
    ehci_hcd 0000:00:1a.7: restoring config space at offset 0x4 (was 0x0, writing 0xe0641000)
    ehci_hcd 0000:00:1a.7: restoring config space at offset 0x1 (was 0x2900000, writing 0x2900002)
    HDA Intel 0000:00:1b.0: restoring config space at offset 0xf (was 0x100, writing 0x10a)
    HDA Intel 0000:00:1b.0: restoring config space at offset 0x3 (was 0x0, writing 0x10)
    HDA Intel 0000:00:1b.0: restoring config space at offset 0x1 (was 0x100000, writing 0x100002)
    pcieport-driver 0000:00:1c.0: restoring config space at offset 0xf (was 0x100, writing 0x4010a)
    pcieport-driver 0000:00:1c.0: restoring config space at offset 0x9 (was 0x10001, writing 0x1fff1)
    pcieport-driver 0000:00:1c.0: restoring config space at offset 0x8 (was 0x0, writing 0xfff0)
    pcieport-driver 0000:00:1c.0: restoring config space at offset 0x7 (was 0x0, writing 0x200000f0)
    pcieport-driver 0000:00:1c.0: restoring config space at offset 0x6 (was 0x0, writing 0x80800)
    pcieport-driver 0000:00:1c.0: restoring config space at offset 0x3 (was 0x810000, writing 0x810010)
    pcieport-driver 0000:00:1c.0: restoring config space at offset 0x1 (was 0x100000, writing 0x100407)
    pcieport-driver 0000:00:1c.1: restoring config space at offset 0xf (was 0x200, writing 0x4020a)
    pcieport-driver 0000:00:1c.1: restoring config space at offset 0x9 (was 0x10001, writing 0x1fff1)
    pcieport-driver 0000:00:1c.1: restoring config space at offset 0x8 (was 0x0, writing 0xe000e000)
    pcieport-driver 0000:00:1c.1: restoring config space at offset 0x7 (was 0x0, writing 0xf0)
    pcieport-driver 0000:00:1c.1: restoring config space at offset 0x3 (was 0x810000, writing 0x810010)
    pcieport-driver 0000:00:1c.1: restoring config space at offset 0x1 (was 0x100000, writing 0x100407)
# These have moved down to late resume.
   -uhci_hcd 0000:00:1d.0: restoring config space at offset 0xf (was 0x100, writing 0x10a)
   -uhci_hcd 0000:00:1d.0: restoring config space at offset 0x8 (was 0x1, writing 0x20c1)
   -uhci_hcd 0000:00:1d.0: restoring config space at offset 0x1 (was 0x2800000, writing 0x2800001)
   -uhci_hcd 0000:00:1d.1: restoring config space at offset 0xf (was 0x200, writing 0x20b)
   -uhci_hcd 0000:00:1d.1: restoring config space at offset 0x8 (was 0x1, writing 0x20e1)
   -uhci_hcd 0000:00:1d.1: restoring config space at offset 0x1 (was 0x2800000, writing 0x2800001)
   -uhci_hcd 0000:00:1d.2: restoring config space at offset 0xf (was 0x300, writing 0x30b)
   -uhci_hcd 0000:00:1d.2: restoring config space at offset 0x8 (was 0x1, writing 0x2101)
   -uhci_hcd 0000:00:1d.2: restoring config space at offset 0x1 (was 0x2800000, writing 0x2800001)
    ehci_hcd 0000:00:1d.7: restoring config space at offset 0xf (was 0x100, writing 0x10a)
    ehci_hcd 0000:00:1d.7: restoring config space at offset 0x4 (was 0x0, writing 0xe0648000)
    ehci_hcd 0000:00:1d.7: restoring config space at offset 0x1 (was 0x2900000, writing 0x2900002)
# These have disappeared.
   -pci 0000:00:1e.0: restoring config space at offset 0x9 (was 0x10001, writing 0x83f18001)
   -pci 0000:00:1e.0: restoring config space at offset 0x8 (was 0x0, writing 0xe030e010)
   -pci 0000:00:1e.0: restoring config space at offset 0x7 (was 0x228000f0, writing 0x22803030)
   -pci 0000:00:1e.0: restoring config space at offset 0x1 (was 0x100007, writing 0x100107)
# First two moved to late resume.
# The third already happened during late resume (duplicated).
   -ata_piix 0000:00:1f.1: restoring config space at offset 0xf (was 0x100, writing 0x10a)
   -ata_piix 0000:00:1f.1: restoring config space at offset 0x8 (was 0xc01, writing 0x2121)
   -ata_piix 0000:00:1f.1: restoring config space at offset 0x1 (was 0x2800005, writing 0x2880005)
    iwlagn 0000:10:00.0: restoring config space at offset 0xf (was 0x100, writing 0x10a)
    iwlagn 0000:10:00.0: restoring config space at offset 0x4 (was 0x4, writing 0xe0000004)
    iwlagn 0000:10:00.0: restoring config space at offset 0x3 (was 0x0, writing 0x10)
    iwlagn 0000:10:00.0: restoring config space at offset 0x1 (was 0x100000, writing 0x100006)
    yenta_cardbus 0000:02:06.0: restoring config space at offset 0xf (was 0x3000100, writing 0x580010b)
    yenta_cardbus 0000:02:06.0: restoring config space at offset 0xe (was 0x0, writing 0x34fc)
    yenta_cardbus 0000:02:06.0: restoring config space at offset 0xd (was 0x0, writing 0x3400)
    yenta_cardbus 0000:02:06.0: restoring config space at offset 0xc (was 0x0, writing 0x30fc)
    yenta_cardbus 0000:02:06.0: restoring config space at offset 0xb (was 0x0, writing 0x3000)
    yenta_cardbus 0000:02:06.0: restoring config space at offset 0xa (was 0x0, writing 0x87fff000)
    yenta_cardbus 0000:02:06.0: restoring config space at offset 0x9 (was 0x0, writing 0x84000000)
    yenta_cardbus 0000:02:06.0: restoring config space at offset 0x8 (was 0x0, writing 0x83fff000)
    yenta_cardbus 0000:02:06.0: restoring config space at offset 0x7 (was 0x0, writing 0x80000000)
    yenta_cardbus 0000:02:06.0: restoring config space at offset 0x6 (was 0x0, writing 0xb0060302)
    yenta_cardbus 0000:02:06.0: restoring config space at offset 0x4 (was 0x0, writing 0xe0100000)
    yenta_cardbus 0000:02:06.0: restoring config space at offset 0x3 (was 0x820000, writing 0x82a800)
    yenta_cardbus 0000:02:06.0: restoring config space at offset 0x1 (was 0x2100000, writing 0x2100007)
    ohci1394 0000:02:06.1: restoring config space at offset 0xf (was 0x4020200, writing 0x4020205)
    ohci1394 0000:02:06.1: restoring config space at offset 0x4 (was 0x0, writing 0xe0101000)
    ohci1394 0000:02:06.1: restoring config space at offset 0x3 (was 0x800000, writing 0x804010)
    ohci1394 0000:02:06.1: restoring config space at offset 0x1 (was 0x2100000, writing 0x2100006)
    sdhci-pci 0000:02:06.2: restoring config space at offset 0xf (was 0x300, writing 0x30a)
    sdhci-pci 0000:02:06.2: restoring config space at offset 0x4 (was 0x0, writing 0xe0102000)
    sdhci-pci 0000:02:06.2: restoring config space at offset 0x3 (was 0x800000, writing 0x804010)
    sdhci-pci 0000:02:06.2: restoring config space at offset 0x1 (was 0x2100000, writing 0x2100006)
# Some changes; a lot just got dropped.
   -ricoh-mmc 0000:02:06.3: restoring config space at offset 0xf (was 0x300, writing 0xffffffff)
   +ricoh-mmc 0000:02:06.3: restoring config space at offset 0xf (was 0x300, writing 0x30a)
   -ricoh-mmc 0000:02:06.3: restoring config space at offset 0xe (was 0x0, writing 0xffffffff)
   -ricoh-mmc 0000:02:06.3: restoring config space at offset 0xd (was 0x80, writing 0xffffffff)
   -ricoh-mmc 0000:02:06.3: restoring config space at offset 0xc (was 0x0, writing 0xffffffff)
   -ricoh-mmc 0000:02:06.3: restoring config space at offset 0xb (was 0x30c9103c, writing 0xffffffff)
   -ricoh-mmc 0000:02:06.3: restoring config space at offset 0xa (was 0x0, writing 0xffffffff)
   -ricoh-mmc 0000:02:06.3: restoring config space at offset 0x9 (was 0x0, writing 0xffffffff)
   -ricoh-mmc 0000:02:06.3: restoring config space at offset 0x8 (was 0x0, writing 0xffffffff)
   -ricoh-mmc 0000:02:06.3: restoring config space at offset 0x7 (was 0x0, writing 0xffffffff)
   -ricoh-mmc 0000:02:06.3: restoring config space at offset 0x6 (was 0x0, writing 0xffffffff)
   -ricoh-mmc 0000:02:06.3: restoring config space at offset 0x5 (was 0x0, writing 0xffffffff)
   -ricoh-mmc 0000:02:06.3: restoring config space at offset 0x4 (was 0x0, writing 0xffffffff)
   +ricoh-mmc 0000:02:06.3: restoring config space at offset 0x4 (was 0x0, writing 0xe0103000)
   -ricoh-mmc 0000:02:06.3: restoring config space at offset 0x3 (was 0x800000, writing 0xffffffff)
   +ricoh-mmc 0000:02:06.3: restoring config space at offset 0x3 (was 0x800000, writing 0x804010)
   -ricoh-mmc 0000:02:06.3: restoring config space at offset 0x2 (was 0x8800011, writing 0xffffffff)
   -ricoh-mmc 0000:02:06.3: restoring config space at offset 0x1 (was 0x2100000, writing 0xffffffff)
   +ricoh-mmc 0000:02:06.3: restoring config space at offset 0x1 (was 0x2100000, writing 0x2100006)
   -ricoh-mmc 0000:02:06.3: restoring config space at offset 0x0 (was 0x8431180, writing 0xffffffff)
    ricoh-mmc: Resuming.
    ricoh-mmc: Controller is now disabled.
   -Enabling non-boot CPUs ...
   -SMP alternatives: switching to SMP code
   -Booting processor 1 APIC 0x1 ip 0x6000
   -Initializing CPU#1
   -Calibrating delay using timer specific routine.. 2660.07 BogoMIPS (lpj=5320158)
   -CPU: L1 I cache: 32K, L1 D cache: 32K
   -CPU: L2 cache: 2048K
   -[ds] using Core 2/Atom configuration
   -CPU: Physical Processor ID: 0
   -CPU: Processor Core ID: 1
   -CPU1: Thermal monitoring enabled (TM2)
   -x86 PAT enabled: cpu 1, old 0x7040600070406, new 0x7010600070106
   -CPU1: Intel(R) Core(TM)2 Duo CPU     U7700  @ 1.33GHz stepping 0d
   -CPU0 attaching NULL sched-domain.
   -Switched to high resolution mode on CPU 1
   -CPU0 attaching sched-domain:
   - domain 0: span 0-1 level MC
   -  groups: 0 1
   -CPU1 attaching sched-domain:
   - domain 0: span 0-1 level MC
   -  groups: 1 0
   -CPU1 is up
   -ACPI: Waking up from system sleep state S3
    ACPI: EC: non-query interrupt received, switching to interrupt mode
    pci 0000:00:02.0: restoring config space at offset 0x1 (was 0x900403, writing 0x900003)
    pci 0000:00:02.0: PME# disabled
    pci 0000:00:02.1: PME# disabled
    pci 0000:00:03.0: PME# disabled
    pci 0000:00:03.2: PME# disabled
    e1000e 0000:00:19.0: PCI INT A -> GSI 22 (level, low) -> IRQ 22
    e1000e 0000:00:19.0: setting latency timer to 64
    e1000e 0000:00:19.0: wake-up capability disabled by ACPI
    e1000e 0000:00:19.0: PME# disabled
    e1000e 0000:00:19.0: wake-up capability disabled by ACPI
    e1000e 0000:00:19.0: PME# disabled
    e1000e 0000:00:19.0: irq 26 for MSI/MSI-X
   +uhci_hcd 0000:00:1a.0: restoring config space at offset 0xf (was 0x100, writing 0x10a)
   +uhci_hcd 0000:00:1a.0: restoring config space at offset 0x8 (was 0x1, writing 0x2081)
   +uhci_hcd 0000:00:1a.0: restoring config space at offset 0x1 (was 0x2800000, writing 0x2800001)
    uhci_hcd 0000:00:1a.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
    uhci_hcd 0000:00:1a.0: setting latency timer to 64
    usb usb1: root hub lost power or was reset
   +uhci_hcd 0000:00:1a.1: restoring config space at offset 0xf (was 0x200, writing 0x20a)
   +uhci_hcd 0000:00:1a.1: restoring config space at offset 0x8 (was 0x1, writing 0x20a1)
   +uhci_hcd 0000:00:1a.1: restoring config space at offset 0x1 (was 0x2800000, writing 0x2800001)
    uhci_hcd 0000:00:1a.1: PCI INT B -> GSI 17 (level, low) -> IRQ 17
    uhci_hcd 0000:00:1a.1: setting latency timer to 64
    usb usb3: root hub lost power or was reset
    ehci_hcd 0000:00:1a.7: PME# disabled
    ehci_hcd 0000:00:1a.7: PCI INT C -> GSI 18 (level, low) -> IRQ 18
    ehci_hcd 0000:00:1a.7: setting latency timer to 64
    ehci_hcd 0000:00:1a.7: PME# disabled
# Called twice now?
    HDA Intel 0000:00:1b.0: power state changed by ACPI to D0
   +HDA Intel 0000:00:1b.0: power state changed by ACPI to D0
    HDA Intel 0000:00:1b.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
    HDA Intel 0000:00:1b.0: setting latency timer to 64
    pcieport-driver 0000:00:1c.0: setting latency timer to 64
    pcieport-driver 0000:00:1c.1: setting latency timer to 64
   +uhci_hcd 0000:00:1d.0: restoring config space at offset 0xf (was 0x100, writing 0x10a)
   +uhci_hcd 0000:00:1d.0: restoring config space at offset 0x8 (was 0x1, writing 0x20c1)
   +uhci_hcd 0000:00:1d.0: restoring config space at offset 0x1 (was 0x2800000, writing 0x2800001)
    uhci_hcd 0000:00:1d.0: PCI INT A -> GSI 20 (level, low) -> IRQ 20
    uhci_hcd 0000:00:1d.0: setting latency timer to 64
    usb usb5: root hub lost power or was reset
   +uhci_hcd 0000:00:1d.1: restoring config space at offset 0xf (was 0x200, writing 0x20b)
   +uhci_hcd 0000:00:1d.1: restoring config space at offset 0x8 (was 0x1, writing 0x20e1)
   +uhci_hcd 0000:00:1d.1: restoring config space at offset 0x1 (was 0x2800000, writing 0x2800001)
    uhci_hcd 0000:00:1d.1: PCI INT B -> GSI 22 (level, low) -> IRQ 22
    uhci_hcd 0000:00:1d.1: setting latency timer to 64
    usb usb6: root hub lost power or was reset
   +uhci_hcd 0000:00:1d.2: restoring config space at offset 0xf (was 0x300, writing 0x30b)
   +uhci_hcd 0000:00:1d.2: restoring config space at offset 0x8 (was 0x1, writing 0x2101)
   +uhci_hcd 0000:00:1d.2: restoring config space at offset 0x1 (was 0x2800000, writing 0x2800001)
    uhci_hcd 0000:00:1d.2: PCI INT C -> GSI 18 (level, low) -> IRQ 18
    uhci_hcd 0000:00:1d.2: setting latency timer to 64
    usb usb7: root hub lost power or was reset
    ehci_hcd 0000:00:1d.7: PME# disabled
    ehci_hcd 0000:00:1d.7: PCI INT A -> GSI 20 (level, low) -> IRQ 20
    ehci_hcd 0000:00:1d.7: setting latency timer to 64
    ehci_hcd 0000:00:1d.7: PME# disabled
    pci 0000:00:1e.0: setting latency timer to 64
   +ata_piix 0000:00:1f.1: restoring config space at offset 0xf (was 0x100, writing 0x10a)
   +ata_piix 0000:00:1f.1: restoring config space at offset 0x8 (was 0xc01, writing 0x2121)
    ata_piix 0000:00:1f.1: restoring config space at offset 0x1 (was 0x2800005, writing 0x2880005)
    ata_piix 0000:00:1f.1: PCI INT A -> GSI 16 (level, low) -> IRQ 16
    ata_piix 0000:00:1f.1: setting latency timer to 64
    ata2: port disabled. ignoring.
    ACPI Exception (exoparg2-0445): AE_AML_PACKAGE_LIMIT, Index (000000005) is beyond end of object [20081204]
    ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.C2C3] (Node ffff88007e01dea0), AE_AML_PACKAGE_LIMIT
    ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.C003.C0F6.C3F3._STM] (Node ffff88007e043de0), AE_AML_PACKAGE_LIMIT
    ata1: ACPI set timing mode failed (status=0x300b)
# Remaining differences are bogus: result of using wireless instead of wired networking.
   +iwlagn 0000:10:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
   +iwlagn 0000:10:00.0: irq 27 for MSI/MSI-X
    ohci1394: fw-host0: OHCI-1394 1.1 (PCI): IRQ=[19]  MMIO=[e0101000-e01017ff]  Max Packet=[2048]  IR/IT contexts=[4/4]
    sdhci-pci 0000:02:06.2: PCI INT C -> GSI 20 (level, low) -> IRQ 20
   +Registered led device: iwl-phy0:radio
   +Registered led device: iwl-phy0:assoc
   +Registered led device: iwl-phy0:RX
   +Registered led device: iwl-phy0:TX
    sd 0:0:0:0: [sda] Starting disk
    ata1.01: ACPI cmd ef/03:0c:00:00:00:b0 filtered out
    ata1.01: ACPI cmd ef/03:40:00:00:00:b0 filtered out
    ata1.00: ACPI cmd ef/03:01:00:00:00:a0 filtered out
    ata1.00: ACPI cmd ef/03:45:00:00:00:a0 filtered out
    ata1.00: ACPI cmd f5/00:00:00:00:00:a0 filtered out
    ata1.00: ACPI cmd b1/c1:00:00:00:00:a0 filtered out
    ata1.00: ACPI cmd c6/00:10:00:00:00:a0 succeeded
   -e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX
   -0000:00:19.0: eth0: 10/100 speed: disabling TSO
    ata1.00: configured for UDMA/100
    ata1.01: configured for MWDMA2
    ata1.00: configured for UDMA/100
    ata1.01: configured for MWDMA2
    ata1: EH complete
    sd 0:0:0:0: [sda] 234441648 512-byte hardware sectors: (120 GB/111 GiB)
    sd 0:0:0:0: [sda] Write Protect is off
    sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
    sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
    sd 0:0:0:0: [sda] 234441648 512-byte hardware sectors: (120 GB/111 GiB)
    sd 0:0:0:0: [sda] Write Protect is off
    sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
    sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
    usb 1-1: reset full speed USB device using uhci_hcd and address 2
    usb 5-2: reset full speed USB device using uhci_hcd and address 2
    pci 0000:00:02.0: restoring config space at offset 0x1 (was 0x900403, writing 0x900003)
    pci 0000:00:02.0: setting latency timer to 64
    Restarting tasks ... done.