Re: [PATCH v2] arm64: dts: msm8996: Use dwc3-qcom glue driver for USB

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Hi Felipe,

2018-06-27 14:30 GMT+02:00 Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx>:
>
> looks like we need to do away with the wait_event_lock_irq()
> call. usb_ep_dequeue() can be called from within the controller's
> interrupt handler, so we can't rely on wait_event_lock_irq(). I guess
> the best thing here would be to mark TRBs as dirty (and not increment
> dequeue pointer), so they aren't reused by accident, then let endpoint
> continue processing. Once command completion interrupt fires, we
> increment dequeue pointer.
>
> This should work better, I suppose. Do you want a shot at implementing
> this?

I wrote a patch to implement this last week, and sent it to linux-arm-msm.
Feel free to review it and tell me if this complies with what you
suggested to me.

Regards,

Pierre Le Magourou
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