[regression] mhi: ath11k resume fails on some devices

[Kalle Valo]

Manivannan Sadhasivam <manivannan.sadhasivam at linaro.org> writes:

> On Thu, Sep 16, 2021 at 01:18:22PM +0200, Loic Poulain wrote:
>> Le jeu. 16 sept. 2021 à 13:12, Manivannan Sadhasivam <
>> manivannan.sadhasivam at linaro.org> a écrit :
>> 
>
> [...]
>
>> > If things seems to work fine without that patch, then it implies that
>> > setting M0
>> > state works during resume. I think we should just revert that patch.
>> >
>> > Loic, did that patch fix any issue for you or it was a cosmetic fix only?
>> 
>> 
>> It fixes sdx modem resuming issue, without that we don’t know modem needs
>> to be reinitialized.
>> 
>
> Okay. Then in that case, the recovery mechanism has to be added to the ath11k
> MHI controller.

What does that mean in practise, do you have any pointers or examples? I
have no clue what you are proposing :)

> If that's too much of work for Kalle, then I'll look into it. But I might get
> time only after Plumbers.

I'm busy, as always, so not sure when I'm able to do it either. I think
we should seriously consider reverting 020d3b26c07a and adding it back
after ath11k is able to handle this new situation.

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