Re: [bluetooth-next V2] Bluetooth: handle device reset event

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Hi Tomas,

> A Bluetooth device experiencing hardware failure may issue
> a HARDWARE_ERROR hci event. The reaction to this event is device
> reset flow implemented in following sequence.
> 
> 1. Notify: HCI_DEV_DOWN
> 2. Reinitialize internal structures.
> 3. Call driver flush function
> 4. Send HCI reset request to the device.
> 5. Send HCI init sequence reset to the device.
> 6. Notify HCI_DEV_UP.

I prefer if we create a generic per controller workqueue first before
having a workqueue for every task. Something similar to what the
mac80211 layer offers right now.

Also in a second step we might wanna move the HCI event processing
completely into a workqueue. If we get no performance hit with that,
then sysfs handling and device reset becomes a lot simpler and less
prone to race conditions with device removal.

Regards

Marcel


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