On Sat, 28 Feb 2015, Jiang Liu wrote:

> On 2015/2/28 6:24, Rafael J. Wysocki wrote:
>> On Friday, February 27, 2015 03:50:32 PM Thomas Voegtle wrote:
>>>
>>> Hi,
>>>
>>> I have the same problem with a Asrock Q1900B-ITX mainboard with
>>> a Intel Celeron J1900 onboard.
>>>
>>> I did a bisect and ended up with:
>>>
>>> 593669c2ac0fe18baee04a3cd5539a148aa48574 is the first bad commit
>>>
>>> commit 593669c2ac0fe18baee04a3cd5539a148aa48574
>>> Author: Jiang Liu <jiang.liu@linux.intel.com>
>>> Date:   Thu Feb 5 13:44:46 2015 +0800
>>>
>>>      x86/PCI/ACPI: Use common ACPI resource interfaces to simplify
>>> implementation
>>>
>>>
>>> I can revert this quite big commit on current git head (4f671fe) with no
>>> problems and then everything is fine again.
>>
>> Thanks for nailing this one!
>>
>> It really wasn't supposed to make any functional difference, though, so there
>> must be some subtle mistake that escaped everyone in it.
>>
>> I'll have a look at that and hopefully Jiang Liu will be able to help in the
>> meantime too.
> Hi all,
> 	Sorry for slow response, just return from Chinese New Holidays:)
> Hi Thomas,
> 	Could you please help to provide the dmesgs before and after the
> revert?


Attached.

Thanks,

Thomas