linux-kernel - Re: -next: no resume from suspend

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Date:	Wed, 16 Jan 2013 15:00:52 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Jiri Slaby <jslaby@...e.cz>
Cc:	Linux PM mailing list <linux-pm@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>
Subject: Re: -next: no resume from suspend

On Wednesday, January 16, 2013 11:43:15 AM Jiri Slaby wrote:
> On 01/14/2013 01:56 PM, Rafael J. Wysocki wrote:
> > On Monday, January 14, 2013 11:11:52 AM Jiri Slaby wrote:
> >> Hi,
> >>
> >> since friday's -next (the last known to be working is the last monday's)
> >> I cannot resume from suspend. The last thing I see with
> >> no_console_suspend is:
> >> i915: No ACPI video bus found
> >>
> >> But I used to see the message always, so this is no difference. Any idea
> >> before I start bisecting?
> > 
> > Well, what's the next message you normally see with no_console_suspend?
> 
> As I wrote in the other message, the kernel is spinning in
> acpi_rs_get_aml_length. There are weird resources in the list. For
> serial 00:05 there is resource with type and length equal to 0 and for
> parport_pc 00:06 there is resource type 58196295 with length of
> 134284152. See:
> acpi_rs_get_aml_length: ffff8801b9f7b380 type=3 len=16
> acpi_rs_get_aml_length: ffff8801b9f7b390 type=0 len=0
> acpi_rs_get_aml_length: BAD ffff8801b9f7b390 type=0 len=0
> serial 00:05: activation failed
> dpm_run_callback(): pnp_bus_resume+0x0/0x80 returns -5
> PM: Device 00:05 failed to resume: error -5
> acpi_rs_get_aml_length: ffff8801b9f7b680 type=3 len=24
> acpi_rs_get_aml_length: ffff8801b9f7b698 type=58196295 len=134284152
> parport_pc 00:06: activation failed
> dpm_run_callback(): pnp_bus_resume+0x0/0x80 returns -5
> PM: Device 00:06 failed to resume: error -5
> 
> if (!length)
>   return error;
> 
> makes it resume again with the errors above...
> 
> This was 3.8.0-rc3-next-20130114. Going to test 20130116 as there are
> these patches:
> 616979e memory-hotplug: remove sysfs file of node
> a41a27d ACPI / PM: remove leading whitespace from #ifdef
> ace2342 ACPI / PM: Consolidate suspend-specific and hibernate-specific code
> 27a5fb8 ACPI / PM: Move device power management functions to device_pm.c
> 717a5d1 ACPI / PM: Export power states of ACPI devices via sysfs
> ee8f808 ACPI / PM: Common string representations of device power states
> 44fed9b ACPI / PM: More visible function for retrieving device power states
> 81ed027 ACPI / PM: Change the way power transitions to D3cold are
> carried out
> 113542c ACPI: Use system level attribute of wakeup power resources
> c6fdf80 ACPI: Take power resource initialization errors into account
> b6568e5 ACPI / scan: Consolidate extraction of power resources lists
> 8a0a4d6 ACPI / scan: Remove unnecessary initialization of local variables
> 5c24aa4 ACPI / scan: Move power state initialization to a separate routine
> 59e8500 ACPI / PM: Take order attribute of wakeup power resources into
> account
> f369253 ACPI / PM: Take order attribute of power resources into account
> 3170b40 ACPI: Do not use device power states of power resources
> 17ece8c ACPI: Drop power resources driver
> 5e4cd24 ACPI / scan: Treat power resources in a special way
> 5b32520 ACPI / scan: More straightforward preparation of ACPI device objects
> 5a62e76 ACPI / PM: Rework the handling of devices depending on power
> resources
> 5993c46 ACPI: update ej_event interface to take acpi_device
> 05404d8 ACPI / scan: Add second pass to acpi_bus_trim()
> cecdb19 ACPI / scan: Change the implementation of acpi_bus_trim()
> ae28179 ACPI / scan: Drop the second argument of acpi_bus_trim()
> b17b537 ACPI / scan: Drop the second argument of acpi_device_unregister()
> a412a11 ACPI / glue: Fix build with ACPI_GLUE_DEBUG set
> abe9921 ACPI / scan: Fix check of device_attach() return value.
> e92a79b ACPI thermal: remove unnecessary newline from exception message
> 2b16c77 ACPI sysfs: remove unnecessary newline from exception
> f1f37cb ACPI video: remove unnecessary newline from error messages
> b43e106 ACPICA: Cleanup table handler naming conflicts.
> 42f8fb7 ACPICA: Source restructuring: split large files into 8 new files.

None of the ACPI patches above has anything to do with resources.

There are two things you can try.  First, revert all of the ACPICA patches
and see if that helps.  Second, if that doesn't help, try to revert things in
the PCI tree (alternatively, you can try the PCI tree alone).

I have tested suspend/resume with the ACPI (including ACPICA) patches applied,
but I haven't tested the PCI tree.

Thanks,
Rafael


-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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