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

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Date:	Wed, 16 Jan 2013 16:01:23 -0700
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	Jiri Slaby <jslaby@...e.cz>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linux PM mailing list <linux-pm@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	"Moore, Robert" <robert.moore@...el.com>
Subject: Re: -next: no resume from suspend

On Wed, Jan 16, 2013 at 3:48 PM, Jiri Slaby <jslaby@...e.cz> wrote:
> On 01/16/2013 03:00 PM, Rafael J. Wysocki wrote:
>> 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.
>>
>> 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.
>
> I bisected that. It is caused by the following commit:
> commit 2a3ab82714043580505634ff5b9a743ff4237376
> Author: Bjorn Helgaas <bhelgaas@...gle.com>
> Date:   Fri Jan 4 22:38:10 2013 +0000
>
>     PNPACPI: Use _CRS buffer directly as _SRS template
>
> Acpidump is here if you are interested:
> http://www.fi.muni.cz/~xslaby/sklad/adump

Crap, sorry Jiri.

Rafael, I don't really care about that patch, so you can just drop it
unless you want to debug it.

Bjorn
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