Bug#677472: [3.1->3.2 regression] Immediate wake on suspend, associated with OHCI on MCP51

[Frank Schäfer <fschaefer.oss@googlemail.com>]

Am 12.12.2012 09:23, schrieb Lan Tianyu:
> On 2012年12月12日 05:59, Frank Schäfer wrote:
>> Am 11.12.2012 17:48, schrieb Alan Stern:
>>
>> [snip]
>>> We really need to know which component is bad: the host controller or 
>>> the device.
>> It happens with all USB 1.1 devices I have (several mice and a HP
>> Deskjet 960c printer).
>> The same devices do not cause other machines to wake up, so I assume
>> it's the host controller.
> Good information. Attaching device makes hc work abnormally during
> entering into s3 since without device it can work, right?

Right.
The system successfully enters S3 (machine switches off = fan stops,
light off etc.) but it resumes immediately.
No errors in the log, it looks like this:

<snip>
...
[24685.640361] PM: Syncing filesystems ... done.
[24686.022132] PM: Preparing system for mem sleep
[24686.110208] Freezing user space processes ... (elapsed 0.01 seconds)
done.
[24686.123851] Freezing remaining freezable tasks ... (elapsed 0.01
seconds) done.
[24686.134818] PM: Entering mem sleep
[24686.134840] Suspending console(s) (use no_console_suspend to debug)
[24686.135751] sd 1:0:0:0: [sda] Synchronizing SCSI cache
[24686.136509] sd 1:0:0:0: [sda] Stopping disk
[24686.150741] i8042 kbd 00:0b: wake-up capability enabled by ACPI
[24686.150833] i8042 aux 00:0a: wake-up capability disabled by ACPI
[24686.150926] parport_pc 00:09: disabled
[24686.151029] serial 00:08: disabled
[24686.151056] serial 00:08: wake-up capability disabled by ACPI
[24686.151219] ACPI handle has no context!
[24686.151299] [drm] nouveau 0000:00:0d.0: Disabling display...
[24686.151302] [drm] nouveau 0000:00:0d.0: Disabling fbcon...
[24686.151311] [drm] nouveau 0000:00:0d.0: Unpinning framebuffer(s)...
[24686.151341] [drm] nouveau 0000:00:0d.0: Evicting buffers...
[24686.255063] usb 1-5: reset high-speed USB device number 3 using ehci_hcd
[24686.346351] [drm] nouveau 0000:00:0d.0: Idling channels...
[24686.346668] [drm] nouveau 0000:00:0d.0: Suspending GPU objects...
[24686.447591] [drm] nouveau 0000:00:0d.0: And we're gone!
[24687.547695] PM: suspend of devices complete after 1412.642 msecs
[24687.547853] PM: late suspend of devices complete after 0.153 msecs
[24687.548029] forcedeth 0000:00:07.0: wake-up capability enabled by ACPI
[24687.559652] ehci_hcd 0000:00:02.1: wake-up capability enabled by ACPI
[24687.570602] ohci_hcd 0000:00:02.0: wake-up capability enabled by ACPI
[24687.581671] PM: noirq suspend of devices complete after 33.815 msecs
[24687.581735] ACPI: Preparing to enter system sleep state S3
[24687.582536] PM: Saving platform NVS memory
[24687.582591] Disabling non-boot CPUs ...
[24687.583984] smpboot: CPU 1 is now offline
[24687.584703] Extended CMOS year: 2000
[24687.584703] ACPI: Low-level resume complete
[24687.584703] PM: Restoring platform NVS memory
[24687.584703] Extended CMOS year: 2000
[24687.586196] Enabling non-boot CPUs ...
[24687.589496] smpboot: Booting Node 0 Processor 1 APIC 0x1
[24687.583795] Initializing CPU#1
[24687.583795] process: Switch to broadcast mode on CPU1
[24687.601153] CPU1 is up
[24687.601538] ACPI: Waking up from system sleep state S3
[24687.613683] ohci_hcd 0000:00:02.0: wake-up capability disabled by ACPI
[24687.624693] ehci_hcd 0000:00:02.1: wake-up capability disabled by ACPI
[24687.624746] pci 0000:00:00.0: Found enabled HT MSI Mapping
[24687.635726] pci 0000:00:00.0: Found enabled HT MSI Mapping
[24687.657735] pci 0000:00:00.0: Found enabled HT MSI Mapping
[24687.668730] pci 0000:00:00.0: Found enabled HT MSI Mapping
[24687.679730] pci 0000:00:00.0: Found enabled HT MSI Mapping
[24687.679803] pci 0000:00:00.0: Found enabled HT MSI Mapping
[24687.679878] pci 0000:00:00.0: Found enabled HT MSI Mapping
[24687.679956] pci 0000:00:00.0: Found enabled HT MSI Mapping
[24687.773804] PM: noirq resume of devices complete after 171.507 msecs
[24687.773907] PM: early resume of devices complete after 0.056 msecs
[24687.773980] ohci_hcd 0000:00:02.0: setting latency timer to 64
[24687.774001] ehci_hcd 0000:00:02.1: setting latency timer to 64
[24687.774023] pci 0000:00:04.0: setting latency timer to 64
...
<snip>


When I disconnect all USB 1.1 devices, suspend works fine.

> I am curious about whether disabling usb device's wakeup rather than usb
> hc's would make suspend work. Can you do a test?
>
> Go to /sys/bus/usb/devices/ and enter the usb 1,1 device
> directory(normally it will be something like"1-1.1".)
> run "echo disabled > power/wakeup".

Are you sure the file is called 'wakeup' for the devices ? I have no
such file in the power directory...

Regards,
Frank