Hi Rafael,

On 08/26/2013 11:02 PM, Rafael J. Wysocki wrote:

> On Monday, August 26, 2013 04:43:26 PM Rafael J. Wysocki wrote:
>> On Monday, August 26, 2013 02:42:09 PM Rafael J. Wysocki wrote:
>>> On Monday, August 26, 2013 11:13:13 AM Gu Zheng wrote:
>>>> Hi Rafael,
> 
> [...]
> 
>>
>> OK, so the patch below is quick and dirty and overkill, but it should make the
>> splat go away at least.
> 
> And if this patch does make the splat go away for you, please also test the
> appended one (Tejun, thanks for the hint!).
> 
> I'll address the ACPI part differently later.

What about changing device_hotplug_lock and acpi_scan_lock to rwsem? like the
attached one(With a preliminary test, it also can make the splat go away).:)

Regards,
Gu

> 
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