Re: [PATCH] usb: dwc3: gadget: set status of request on every completed trb

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Hello!

On 3/8/22 12:46 AM, Michael Grzeschik wrote:

> Currently the status of the request being completed comes from the
> dwc3_event_depevt status. The resulting status will then be applied to
> the request on dwc3_gadget_del_and_unmap_request.
> 
> This assigned status is not right in every case. Since it is possible
> that more requests can be ready on the interrupt handler we have to set
> the actual status for every request from the trbstatus instead.
> 
> Signed-off-by: Michael Grzeschik <m.grzeschik@xxxxxxxxxxxxxx>
> ---
>  drivers/usb/dwc3/gadget.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
> index a0c883f19a417c..760af09d6d8ef7 100644
> --- a/drivers/usb/dwc3/gadget.c
> +++ b/drivers/usb/dwc3/gadget.c
> @@ -3171,6 +3171,11 @@ static int dwc3_gadget_ep_reclaim_completed_trb(struct dwc3_ep *dep,
>  	count = trb->size & DWC3_TRB_SIZE_MASK;
>  	req->remaining += count;
>  
> +	if (DWC3_TRB_SIZE_TRBSTS(trb->size) == DWC3_TRBSTS_MISSED_ISOC)
> +		req->request.status = -EXDEV;
> +	else if (DWC3_TRB_SIZE_TRBSTS(trb->size) == DWC3_TRBSTS_OK)
> +		req->request.status = 0;
> +

   Shouldn't that be a *switch* statement instead?

[...]

MBR, Sergey



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