[PATCH 11/13] wcn36xx: Do not suspend if scan in progress

[Bryan O'Donoghue]

On 11/01/2021 11:31, Kalle Valo wrote:
> Bryan O'Donoghue <bryan.odonoghue at linaro.org> writes:
> 
>> If a scan is in progress do not attempt to enter into suspend. Allow the
>> scan process to quiesce before proceeding.
>>
>> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue at linaro.org>
> 
> Why? I would have considered the opposite and if we go to suspend we
> cancel the scan. No strong feelings, just don't see the need for scan
> results during suspend. But of course I might be missing something...

We need to be switched to the AP's channel when calling the suspend 
routine. During a s/w scan we switch off channel to scan for 100s of 
milliseconds.

If the suspend() routine is called while that is true, we suspend on the 
wrong channel.

So we would need to switch to the right channel explicitly in suspend 
but, at the moment wcn36xx_config() for switching channels and I thought 
it best to leave the channel switching logic in the one place.

I'm not opposed in principle to

- Entering suspend
- Switching to the last known active channel
- Suspending

---
bod