Re: Hotplug borked after suspend/resume in Linux-3.3 ?

[Martin Mokrejs <mmokrejs@xxxxxxxxxxxxxxxxxx>]

Martin Mokrejs wrote:
> 
> 
> Jeff Garzik wrote:
>> On 04/18/2012 01:10 PM, Martin Mokrejs wrote:
>>> Fix: I got my 3TB disk detected by this single command:
>>>
>>> # echo on>   /sys/devices/pci0000:00/0000:00:1f.2/ata6/power/control
>>> #
>>>
>>> This is a Dell Vostro 3550 with A09 BIOS. Same happend with 3.4-rc3 kernel.
>>>
>>> I can do some more testing if you want me to.
>>> Best,
>>> Martin
>>
>>
>> Can you test this one-line patch from Lin Ming?  Hopefully there is zero sysfs twiddling required with this one...
>>
>> --- a/drivers/ata/libata-transport.c
>> +++ b/drivers/ata/libata-transport.c
>> @@ -294,6 +294,7 @@ int ata_tport_add(struct device *parent,
>>      device_enable_async_suspend(dev);
>>      pm_runtime_set_active(dev);
>>      pm_runtime_enable(dev);
>> +    pm_runtime_forbid(dev);
>>
>>      transport_add_device(dev);
>>      transport_configure_device(dev);
> 
> Works! (the src tree has some pcieh patches so can re-test in a while on vanilla kernel
> sources if you want me to confirm that). Just too many patches to try. ;-)

Just confirming that it fixed even plain 3.4-rc3 as well.

Martin
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