Re: [PATCH] OMAP: USB : Fix the EHCI enumeration and core retention issue

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On Mon, Jul 2, 2012 at 10:24 PM, Kevin Hilman <khilman@xxxxxx> wrote:
> Felipe, Keshava,
>
> Kevin Hilman <khilman@xxxxxx> writes:
>
>> Felipe Balbi <balbi@xxxxxx> writes:
>>
>> [...]
>>
>>> Keshava is reverting a fix for a HW errata. I can't accept it as it will
>>> cause regressions. Granted, regression by regression, there's no change,
>>> but I simply can't knowingly cause a regression to the driver just to
>>> have PM working. We need a real fix for this issue.
>>
>> Sure, as long as there is a fix in this -rc cycle.
>>
>> This driver intoduced changes in v3.5 that break PM for the whole SoC
>> (by preventing CORE retention.)  These changes were clearly not tested
>> with PM.
>>
>> If you cannot fix this during the -rc cycle, then you need to revert the
>> driver PM changes that broke PM for the *whole* SoC.
>
> What's the status of this regression?
>
> This is still broken in v3.5-rc and is preventing CORE retention for the
> *whole* SoC.
>
> Please fix this, either with a proper fix, or a revert for 3.5-rc.


The proper fix for this is implement ion of ehci remote wakeup through
I/O chain handler; it takes time.
As Felipe also mentioned,  This patch is OK for now.
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