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

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On Thu, Apr 19, 2012 at 2:32 AM, Martin Mokrejs
<mmokrejs@xxxxxxxxxxxxxxxxxx> wrote:
> 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);
>
>
> There is one more minor issue. I cannot get my disk re-dectected at 3Gbps. Here is when I plugged it in
> for the very first time after bootup (plain 3.4-rc3 with the above one-line fix):

Hi Martin,

I'm looking at this issue now.

Thanks for test and report.

Lin Ming
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