Date:	Sun, 18 Dec 2011 15:11:01 +0100
From:	Udo Steinberg <udo@...ervisor.org>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: PCI suspend warnings in 3.2-rc6

Hi,

When suspending to RAM, I'm getting a bunch of warnings from the PCI layer
in Linux-3.2-rc6, which I didn't get with Linux-3.1. Please let me know if
I should provide more information about platform, config, etc.

Cheers,

	- Udo

[ 4213.638873] PM: Syncing filesystems ... done.
[ 4213.804067] PM: Preparing system for mem sleep
[ 4214.475672] Freezing user space processes ... (elapsed 0.01 seconds) done.
[ 4214.491035] Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
[ 4214.507017] PM: Entering mem sleep
[ 4214.507137] Suspending console(s) (use no_console_suspend to debug)
[ 4214.519837] sd 2:0:0:0: [sdb] Synchronizing SCSI cache
[ 4214.520505] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[ 4214.520532] sd 2:0:0:0: [sdb] Stopping disk
[ 4214.535795] ------------[ cut here ]------------
[ 4214.535812] WARNING: at drivers/pci/pci-driver.c:607 pci_has_legacy_pm_support.clone.3+0x48/0x4c()
[ 4214.535817] Hardware name: 4290W4H
[ 4214.535823] Pid: 18161, comm: kworker/u:14 Not tainted 3.2.0-rc6 #1
[ 4214.535827] Call Trace:
[ 4214.535840]  [<ffffffff81037044>] ? warn_slowpath_common+0x73/0x87
[ 4214.535848]  [<ffffffff81179840>] ? pci_has_legacy_pm_support.clone.3+0x48/0x4c
[ 4214.535856]  [<ffffffff81179e53>] ? pci_pm_suspend+0x30/0xea
[ 4214.535868]  [<ffffffff8123a8b5>] ? dpm_wait+0x35/0x35
[ 4214.535875]  [<ffffffff8123b05f>] ? pm_op+0x88/0x148
[ 4214.535882]  [<ffffffff8123b270>] ? __device_suspend+0xfc/0x193
[ 4214.535890]  [<ffffffff81050f57>] ? __async_schedule+0x121/0x121
[ 4214.535897]  [<ffffffff8123b53e>] ? async_suspend+0x19/0x83
[ 4214.535903]  [<ffffffff81050fed>] ? async_run_entry_fn+0x96/0x141
[ 4214.535912]  [<ffffffff81047492>] ? process_one_work+0x1c8/0x2e3
[ 4214.535919]  [<ffffffff81046b23>] ? need_to_create_worker+0x15/0x2d
[ 4214.535927]  [<ffffffff81048261>] ? worker_thread+0x17a/0x23a
[ 4214.535934]  [<ffffffff810480e7>] ? manage_workers.clone.18+0x15b/0x15b
[ 4214.535941]  [<ffffffff8104bc97>] ? kthread+0x7a/0x82
[ 4214.535949]  [<ffffffff813e3574>] ? kernel_thread_helper+0x4/0x10
[ 4214.535956]  [<ffffffff8104bc1d>] ? kthread_flush_work_fn+0x11/0x11
[ 4214.535962]  [<ffffffff813e3570>] ? gs_change+0xb/0xb
[ 4214.535972] ---[ end trace 50804e7504fa4fca ]---
[ 4214.536061] snd_hda_intel 0000:00:1b.0: PCI INT A disabled
[ 4214.537252] sdhci-pci 0000:0d:00.0: PCI INT A disabled
[ 4214.539032] ACPI handle has no context!
[ 4214.545824] sd 0:0:0:0: [sda] Stopping disk
[ 4214.554906] i915 0000:00:02.0: power state changed by ACPI to D3
[ 4214.626750] ehci_hcd 0000:00:1d.0: PCI INT A disabled
[ 4214.630739] ehci_hcd 0000:00:1a.0: PCI INT A disabled
[ 4214.630753] e1000e 0000:00:19.0: PCI INT A disabled
[ 4214.630766] e1000e 0000:00:19.0: PME# enabled
[ 4214.630774] e1000e 0000:00:19.0: wake-up capability enabled by ACPI
[ 4214.818745] PM: suspend of devices complete after 311.805 msecs
[ 4214.819011] xhci_hcd 0000:0e:00.0: PME# enabled
[ 4214.819036] pcieport 0000:00:1c.6: wake-up capability enabled by ACPI
[ 4214.834654] ------------[ cut here ]------------
[ 4214.834673] WARNING: at drivers/pci/pci-driver.c:607 pci_has_legacy_pm_support.clone.3+0x48/0x4c()
[ 4214.834679] Hardware name: 4290W4H
[ 4214.834686] Pid: 18148, comm: acpi_handler.sh Tainted: G        W    3.2.0-rc6 #1
[ 4214.834690] Call Trace:
[ 4214.834701]  [<ffffffff81037044>] ? warn_slowpath_common+0x73/0x87
[ 4214.834710]  [<ffffffff81179840>] ? pci_has_legacy_pm_support.clone.3+0x48/0x4c
[ 4214.834717]  [<ffffffff81179acf>] ? pci_pm_suspend_noirq+0x2e/0x10c
[ 4214.834726]  [<ffffffff8123b67a>] ? pm_noirq_op+0xd2/0x1ad
[ 4214.834733]  [<ffffffff8123b9a4>] ? dpm_suspend_noirq+0x9f/0x1e8
[ 4214.834743]  [<ffffffff8105e04c>] ? suspend_devices_and_enter+0x8e/0x1ec
[ 4214.834751]  [<ffffffff8105e2c1>] ? enter_state+0x117/0x168
[ 4214.834757]  [<ffffffff8105d4ca>] ? state_store+0xb4/0x108
[ 4214.834764]  [<ffffffff810f0801>] ? sysfs_write_file+0xd3/0x10f
[ 4214.834775]  [<ffffffff810aa823>] ? vfs_write+0xaf/0x129
[ 4214.834782]  [<ffffffff810aa950>] ? sys_write+0x45/0x6e
[ 4214.834794]  [<ffffffff813e21fb>] ? system_call_fastpath+0x16/0x1b
[ 4214.834799] ---[ end trace 50804e7504fa4fcb ]---
[ 4214.850794] ehci_hcd 0000:00:1d.0: PME# enabled
[ 4214.850814] ehci_hcd 0000:00:1d.0: wake-up capability enabled by ACPI
[ 4214.866576] ehci_hcd 0000:00:1d.0: power state changed by ACPI to D3
[ 4214.866677] ehci_hcd 0000:00:1a.0: PME# enabled
[ 4214.866692] ehci_hcd 0000:00:1a.0: wake-up capability enabled by ACPI
[ 4214.882555] ehci_hcd 0000:00:1a.0: power state changed by ACPI to D3
[ 4214.882675] PM: late suspend of devices complete after 64.003 msecs
[ 4214.883556] ACPI: Preparing to enter system sleep state S3
[ 4215.054409] PM: Saving platform NVS memory
[ 4215.064347] Disabling non-boot CPUs ...
[ 4215.067271] CPU 1 is now offline
[ 4215.170127] CPU 2 is now offline
[ 4215.273993] CPU 3 is now offline
[ 4215.274566] Extended CMOS year: 2000
[ 4215.275541] ACPI: Low-level resume complete
[ 4215.275577] PM: Restoring platform NVS memory
[ 4215.276354] Extended CMOS year: 2000
[ 4215.276372] Enabling non-boot CPUs ...
[ 4215.284592] Booting Node 0 Processor 1 APIC 0x1
[ 4215.284597] smpboot cpu 1: start_ip = 98000
[ 4215.296268] Calibrating delay loop (skipped) already calibrated this CPU
[ 4215.296280] Disabled fast string operations
[ 4215.363838] CPU1 is up
[ 4215.364104] Booting Node 0 Processor 2 APIC 0x2
[ 4215.364109] smpboot cpu 2: start_ip = 98000
[ 4215.375712] Calibrating delay loop (skipped) already calibrated this CPU
[ 4215.375723] Disabled fast string operations
[ 4215.491556] CPU2 is up
[ 4215.491896] Booting Node 0 Processor 3 APIC 0x3
[ 4215.491897] smpboot cpu 3: start_ip = 98000
[ 4215.502909] Calibrating delay loop (skipped) already calibrated this CPU
[ 4215.502920] Disabled fast string operations
[ 4215.571679] CPU3 is up
[ 4215.576087] ACPI: Waking up from system sleep state S3
[ 4215.767262] ACPI: \_SB_.PCI0.LPC_.EC__.BAT1 - docking
[ 4215.775227] ACPI: Unable to dock!
[ 4215.907164] i915 0000:00:02.0: restoring config space at offset 0xf (was 0x100, writing 0x10b)
[ 4215.907189] i915 0000:00:02.0: restoring config space at offset 0x1 (was 0x900007, writing 0x900407)
[ 4215.907236] pci 0000:00:16.0: restoring config space at offset 0xf (was 0x100, writing 0x1ff)
[ 4215.907269] pci 0000:00:16.0: restoring config space at offset 0x4 (was 0xfed0a004, writing 0xf2625004)
[ 4215.907284] pci 0000:00:16.0: restoring config space at offset 0x1 (was 0x100006, writing 0x180006)
[ 4215.907324] serial 0000:00:16.3: restoring config space at offset 0xf (was 0x200, writing 0x2ff)
[ 4215.907354] serial 0000:00:16.3: restoring config space at offset 0x5 (was 0x0, writing 0xf262c000)
[ 4215.907364] serial 0000:00:16.3: restoring config space at offset 0x4 (was 0x1, writing 0x50b1)
[ 4215.907379] serial 0000:00:16.3: restoring config space at offset 0x1 (was 0xb00000, writing 0xb00003)
[ 4215.907425] e1000e 0000:00:19.0: restoring config space at offset 0xf (was 0x100, writing 0x1ff)
[ 4215.907452] e1000e 0000:00:19.0: restoring config space at offset 0x6 (was 0x1, writing 0x5081)
[ 4215.907470] e1000e 0000:00:19.0: restoring config space at offset 0x1 (was 0x100002, writing 0x100007)
[ 4215.907523] ehci_hcd 0000:00:1a.0: restoring config space at offset 0xf (was 0x100, writing 0x1ff)
[ 4215.907554] ehci_hcd 0000:00:1a.0: restoring config space at offset 0x4 (was 0x0, writing 0xf262a000)
[ 4215.907570] ehci_hcd 0000:00:1a.0: restoring config space at offset 0x1 (was 0x2900000, writing 0x2900002)
[ 4215.907617] ehci_hcd 0000:00:1a.0: wake-up capability disabled by ACPI
[ 4215.907626] ehci_hcd 0000:00:1a.0: PME# disabled
[ 4215.907635] ehci_hcd 0000:00:1a.0: power state changed by ACPI to D0
[ 4215.907644] ehci_hcd 0000:00:1a.0: power state changed by ACPI to D0
[ 4215.907678] snd_hda_intel 0000:00:1b.0: restoring config space at offset 0xf (was 0x100, writing 0x1ff)
[ 4215.907709] snd_hda_intel 0000:00:1b.0: restoring config space at offset 0x4 (was 0x4, writing 0xf2620004)
[ 4215.907720] snd_hda_intel 0000:00:1b.0: restoring config space at offset 0x3 (was 0x0, writing 0x10)
[ 4215.907732] snd_hda_intel 0000:00:1b.0: restoring config space at offset 0x1 (was 0x100000, writing 0x100002)
[ 4215.907790] pcieport 0000:00:1c.0: restoring config space at offset 0xf (was 0x100, writing 0x1ff)
[ 4215.907813] pcieport 0000:00:1c.0: restoring config space at offset 0x9 (was 0x10001, writing 0x1fff1)
[ 4215.907823] pcieport 0000:00:1c.0: restoring config space at offset 0x8 (was 0x0, writing 0xfff0)
[ 4215.907834] pcieport 0000:00:1c.0: restoring config space at offset 0x7 (was 0x20000000, writing 0x200000f0)
[ 4215.907852] pcieport 0000:00:1c.0: restoring config space at offset 0x3 (was 0x810000, writing 0x810010)
[ 4215.907866] pcieport 0000:00:1c.0: restoring config space at offset 0x1 (was 0x100000, writing 0x100004)
[ 4215.907930] pcieport 0000:00:1c.1: restoring config space at offset 0xf (was 0x200, writing 0x2ff)
[ 4215.907953] pcieport 0000:00:1c.1: restoring config space at offset 0x9 (was 0x10001, writing 0x1fff1)
[ 4215.907964] pcieport 0000:00:1c.1: restoring config space at offset 0x8 (was 0x0, writing 0xf250f250)
[ 4215.907974] pcieport 0000:00:1c.1: restoring config space at offset 0x7 (was 0x0, writing 0x200000f0)
[ 4215.907990] pcieport 0000:00:1c.1: restoring config space at offset 0x3 (was 0x810000, writing 0x810010)
[ 4215.908003] pcieport 0000:00:1c.1: restoring config space at offset 0x1 (was 0x100000, writing 0x100007)
[ 4215.908071] pcieport 0000:00:1c.3: restoring config space at offset 0xf (was 0x400, writing 0x4ff)
[ 4215.908094] pcieport 0000:00:1c.3: restoring config space at offset 0x9 (was 0x10001, writing 0xf0b1f041)
[ 4215.908104] pcieport 0000:00:1c.3: restoring config space at offset 0x8 (was 0x0, writing 0xf240f1d0)
[ 4215.908114] pcieport 0000:00:1c.3: restoring config space at offset 0x7 (was 0x20000000, writing 0x4040)
[ 4215.908132] pcieport 0000:00:1c.3: restoring config space at offset 0x3 (was 0x810000, writing 0x810010)
[ 4215.908146] pcieport 0000:00:1c.3: restoring config space at offset 0x1 (was 0x100000, writing 0x100007)
[ 4215.908212] pcieport 0000:00:1c.4: restoring config space at offset 0xf (was 0x100, writing 0x1ff)
[ 4215.908234] pcieport 0000:00:1c.4: restoring config space at offset 0x9 (was 0x10001, writing 0xf131f0c1)
[ 4215.908245] pcieport 0000:00:1c.4: restoring config space at offset 0x8 (was 0x0, writing 0xf1c0f150)
[ 4215.908256] pcieport 0000:00:1c.4: restoring config space at offset 0x7 (was 0x20000000, writing 0x3030)
[ 4215.908273] pcieport 0000:00:1c.4: restoring config space at offset 0x3 (was 0x810000, writing 0x810010)
[ 4215.908286] pcieport 0000:00:1c.4: restoring config space at offset 0x1 (was 0x100000, writing 0x100007)
[ 4215.908348] pcieport 0000:00:1c.6: restoring config space at offset 0xf (was 0x300, writing 0x3ff)
[ 4215.908369] pcieport 0000:00:1c.6: restoring config space at offset 0x9 (was 0x10001, writing 0x1fff1)
[ 4215.908379] pcieport 0000:00:1c.6: restoring config space at offset 0x8 (was 0x0, writing 0xf140f140)
[ 4215.908390] pcieport 0000:00:1c.6: restoring config space at offset 0x7 (was 0x0, writing 0x200000f0)
[ 4215.908405] pcieport 0000:00:1c.6: restoring config space at offset 0x3 (was 0x810000, writing 0x810010)
[ 4215.908418] pcieport 0000:00:1c.6: restoring config space at offset 0x1 (was 0x100000, writing 0x100007)
[ 4215.908477] ehci_hcd 0000:00:1d.0: restoring config space at offset 0xf (was 0x100, writing 0x1ff)
[ 4215.908508] ehci_hcd 0000:00:1d.0: restoring config space at offset 0x4 (was 0x0, writing 0xf2629000)
[ 4215.908523] ehci_hcd 0000:00:1d.0: restoring config space at offset 0x1 (was 0x2900000, writing 0x2900002)
[ 4215.908556] ehci_hcd 0000:00:1d.0: wake-up capability disabled by ACPI
[ 4215.908565] ehci_hcd 0000:00:1d.0: PME# disabled
[ 4215.908571] ehci_hcd 0000:00:1d.0: power state changed by ACPI to D0
[ 4215.908579] ehci_hcd 0000:00:1d.0: power state changed by ACPI to D0
[ 4215.908700] ahci 0000:00:1f.2: restoring config space at offset 0x1 (was 0x2b00403, writing 0x2b00407)
[ 4215.909066] iwlwifi 0000:03:00.0: restoring config space at offset 0xf (was 0x100, writing 0x1ff)
[ 4215.909120] iwlwifi 0000:03:00.0: restoring config space at offset 0x4 (was 0x4, writing 0xf2500004)
[ 4215.909134] iwlwifi 0000:03:00.0: restoring config space at offset 0x3 (was 0x0, writing 0x10)
[ 4215.909151] iwlwifi 0000:03:00.0: restoring config space at offset 0x1 (was 0x100000, writing 0x100006)
[ 4215.909490] sdhci-pci 0000:0d:00.0: restoring config space at offset 0x3 (was 0x800010, writing 0x10)
[ 4215.909537] sdhci-pci 0000:0d:00.0: restoring config space at offset 0x1 (was 0x100002, writing 0x100006)
[ 4215.909604] ------------[ cut here ]------------
[ 4215.909618] WARNING: at drivers/pci/pci-driver.c:607 pci_has_legacy_pm_support.clone.3+0x48/0x4c()
[ 4215.909623] Hardware name: 4290W4H
[ 4215.909629] Pid: 18148, comm: acpi_handler.sh Tainted: G        W    3.2.0-rc6 #1
[ 4215.909633] Call Trace:
[ 4215.909646]  [<ffffffff81037044>] ? warn_slowpath_common+0x73/0x87
[ 4215.909654]  [<ffffffff81179840>] ? pci_has_legacy_pm_support.clone.3+0x48/0x4c
[ 4215.909661]  [<ffffffff811799c8>] ? pci_pm_resume_noirq+0x25/0x62
[ 4215.909671]  [<ffffffff8123b696>] ? pm_noirq_op+0xee/0x1ad
[ 4215.909677]  [<ffffffff8123b82e>] ? dpm_resume_noirq+0xd9/0x1b0
[ 4215.909687]  [<ffffffff8105e132>] ? suspend_devices_and_enter+0x174/0x1ec
[ 4215.909695]  [<ffffffff8105e2c1>] ? enter_state+0x117/0x168
[ 4215.909702]  [<ffffffff8105d4ca>] ? state_store+0xb4/0x108
[ 4215.909709]  [<ffffffff810f0801>] ? sysfs_write_file+0xd3/0x10f
[ 4215.909719]  [<ffffffff810aa823>] ? vfs_write+0xaf/0x129
[ 4215.909727]  [<ffffffff810aa950>] ? sys_write+0x45/0x6e
[ 4215.909738]  [<ffffffff813e21fb>] ? system_call_fastpath+0x16/0x1b
[ 4215.909744] ---[ end trace 50804e7504fa4fcc ]---
[ 4215.909804] xhci_hcd 0000:0e:00.0: restoring config space at offset 0xf (was 0x100, writing 0x1ff)
[ 4215.909844] xhci_hcd 0000:0e:00.0: restoring config space at offset 0x4 (was 0x4, writing 0xf1400004)
[ 4215.909856] xhci_hcd 0000:0e:00.0: restoring config space at offset 0x3 (was 0x0, writing 0x10)
[ 4215.909870] xhci_hcd 0000:0e:00.0: restoring config space at offset 0x1 (was 0x100000, writing 0x100402)
[ 4215.909934] pcieport 0000:00:1c.6: wake-up capability disabled by ACPI
[ 4215.909944] xhci_hcd 0000:0e:00.0: PME# disabled
[ 4215.910048] PM: early resume of devices complete after 2.971 msecs
[ 4215.910321] ------------[ cut here ]------------
[ 4215.910330] WARNING: at drivers/pci/pci-driver.c:607 pci_has_legacy_pm_support.clone.3+0x48/0x4c()
[ 4215.910334] Hardware name: 4290W4H
[ 4215.910339] Pid: 18152, comm: kworker/u:5 Tainted: G        W    3.2.0-rc6 #1
[ 4215.910343] Call Trace:
[ 4215.910351]  [<ffffffff81037044>] ? warn_slowpath_common+0x73/0x87
[ 4215.910362] xhci_hcd 0000:0e:00.0: setting latency timer to 64
[ 4215.910373]  [<ffffffff81179840>] ? pci_has_legacy_pm_support.clone.3+0x48/0x4c
[ 4215.910380]  [<ffffffff81179cca>] ? pci_pm_resume+0x3b/0x7a
[ 4215.910387]  [<ffffffff8123b07d>] ? pm_op+0xa6/0x148
[ 4215.910394]  [<ffffffff8123bbdf>] ? device_resume+0xa4/0x100
[ 4215.910402]  [<ffffffff81050f57>] ? __async_schedule+0x121/0x121
[ 4215.910409] usb usb3: root hub lost power or was reset
[ 4215.910415] usb usb4: root hub lost power or was reset
[ 4215.910422]  [<ffffffff8123be5d>] ? async_resume+0x14/0x38
[ 4215.910429]  [<ffffffff81050fed>] ? async_run_entry_fn+0x96/0x141
[ 4215.910438]  [<ffffffff81047492>] ? process_one_work+0x1c8/0x2e3
[ 4215.910445]  [<ffffffff81048261>] ? worker_thread+0x17a/0x23a
[ 4215.910453]  [<ffffffff810480e7>] ? manage_workers.clone.18+0x15b/0x15b
[ 4215.910460]  [<ffffffff810480e7>] ? manage_workers.clone.18+0x15b/0x15b
[ 4215.910466]  [<ffffffff8104bc97>] ? kthread+0x7a/0x82
[ 4215.910473]  [<ffffffff813e3574>] ? kernel_thread_helper+0x4/0x10
[ 4215.910480]  [<ffffffff8104bc1d>] ? kthread_flush_work_fn+0x11/0x11
[ 4215.910486]  [<ffffffff813e3570>] ? gs_change+0xb/0xb
[ 4215.910490] ---[ end trace 50804e7504fa4fcd ]---
[ 4215.911008] e1000e 0000:00:19.0: wake-up capability disabled by ACPI
[ 4215.911012] xhci_hcd 0000:0e:00.0: irq 42 for MSI/MSI-X
[ 4215.911015] e1000e 0000:00:19.0: PME# disabled
[ 4215.911017] xhci_hcd 0000:0e:00.0: irq 44 for MSI/MSI-X
[ 4215.911022] xhci_hcd 0000:0e:00.0: irq 45 for MSI/MSI-X
[ 4215.911027] xhci_hcd 0000:0e:00.0: irq 46 for MSI/MSI-X
[ 4215.911031] xhci_hcd 0000:0e:00.0: irq 47 for MSI/MSI-X
[ 4215.911043] ehci_hcd 0000:00:1a.0: power state changed by ACPI to D0
[ 4215.911231] ehci_hcd 0000:00:1d.0: power state changed by ACPI to D0
[ 4215.911254] snd_hda_intel 0000:00:1b.0: PCI INT A -> GSI 22 (level, low) -> IRQ 22
[ 4215.911262] snd_hda_intel 0000:00:1b.0: setting latency timer to 64
[ 4215.911358] snd_hda_intel 0000:00:1b.0: irq 48 for MSI/MSI-X
[ 4215.911377] e1000e 0000:00:19.0: irq 49 for MSI/MSI-X
[ 4215.911414] ahci 0000:00:1f.2: setting latency timer to 64
[ 4215.911487] sdhci-pci 0000:0d:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 4215.911492] ehci_hcd 0000:00:1a.0: power state changed by ACPI to D0
[ 4215.911500] ehci_hcd 0000:00:1a.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 4215.911510] ehci_hcd 0000:00:1a.0: setting latency timer to 64
[ 4215.911534] ehci_hcd 0000:00:1d.0: power state changed by ACPI to D0
[ 4215.911542] ehci_hcd 0000:00:1d.0: PCI INT A -> GSI 23 (level, low) -> IRQ 23
[ 4215.911551] ehci_hcd 0000:00:1d.0: setting latency timer to 64
[ 4215.911846] i915 0000:00:02.0: power state changed by ACPI to D0
[ 4215.911862] i915 0000:00:02.0: power state changed by ACPI to D0
[ 4215.911876] i915 0000:00:02.0: setting latency timer to 64
[ 4215.926937] sd 2:0:0:0: [sdb] Starting disk
[ 4215.926952] sd 0:0:0:0: [sda] Starting disk

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