Re: [PATCH v2 0/2] pinctrl: Allow indicating loss of state across suspend/resume

On Friday, November 3, 2017 6:33:53 PM CET Tony Lindgren wrote:

* Florian Fainelli [off-list ref] [171103 17:04]:

quoted

On 11/03/2017 09:11 AM, Tony Lindgren wrote:
The pinctrl provider is losing its state, hence these two patches.

OK

quoted

quoted

Anyways, the context lost flag should be managed in the PM core for
the device, so adding linux-pm and Rafael to Cc.

I don't think it's that simple but sure, why not.

Just having bool context_lost in struct dev_pm_info would probably
be enough to allow drivers to deal with it. This flag could then
be set for a device by power domain related code that knows if
context got lost.

Something like: if the driver sees "context_lost" set, it should restore
the context to the device from memory?

But the it would also need to save the context beforehand, so why not to
restore it unconditionally on resume?

Thanks,
Rafael

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