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

[Jeff Garzik <jgarzik@pobox.com>]

On 04/17/2012 05:05 PM, Mark Lord wrote:
> On 12-04-17 04:57 PM, Jeff Garzik wrote:
>> On 04/17/2012 04:48 PM, Mark Lord wrote:
>>> On 12-04-17 04:38 PM, Mark Lord wrote:
>>>> Okay, so why isn't SATA hotplug working in linux-3.3.2 ?
>>>> I don't know when it stopped working, but it's a blooming pain in the sysadmin.
>>>>
>>>> I need to hotplug a SATA drive into an AHCI port,
>>>> preferably without having to reboot first.
>>>>
>>>> Is there a patch available already for this regression?
>>>
>>>
>>> Answering my own question, this patch appears to address the issue.
>>> I'll test and report back again shortly:
>>>
>>>       http://patchwork.ozlabs.org/patch/146326/
>>>
>>> Odd that it's been sitting in various people's inboxes since 3.3-rc1
>>> and hasn't been pushed out yet.
>>
>> The vast majority of "hotpluggable" ports are not necessarily covered by this patch.
>
>
> And what majority of ports are currently broken by linux-3.3 ?
> Any idea of what the offending commit may have been,
> so I can test against that and perhaps get it reverted then?
>
> So far, my sample of three systems are all broken with this kernel.
> That's definitely "regression" territory.  :)

Right -- rather than breaking a bunch and fixing a few, we might just 
need to revert the runtime pm stuff altogether.

Commits to look at include

	966f1212e1ac5fe3ddf04479d21488ddb36a2608
	33574d68ae41ccbc6686cfabd965c685285c58a0
	e90b1e5a6e04c8892007ff8db20ef6d4fbdb5402
	9ee4f3933930abf5cc34f8e9d69fe0e08c18f602
	5ef41082912bdfcb33fa53b8dba2ad17dea2ef90
	9a6d6a2ddabbd32c07f6a38b659e5f3db319fa5a