Re: [RESEND PATCH v3 2/2] usb: dwc3: Wait for control tranfer completed when stopping gadget

From: Felipe Balbi
Date: Thu Oct 13 2016 - 03:10:13 EST



Hi,

Baolin Wang <baolin.wang@xxxxxxxxxx> writes:
> @@ -1487,10 +1496,22 @@ static int dwc3_gadget_pullup(struct usb_gadget *g, int is_on)
>
> is_on = !!is_on;
>
> +try_again:
> spin_lock_irqsave(&dwc->lock, flags);
> ret = dwc3_gadget_run_stop(dwc, is_on, false);
> spin_unlock_irqrestore(&dwc->lock, flags);
>
> + if (ret == -EBUSY) {
> + ret = wait_for_completion_timeout(&dwc->ep0_in_setup,
> + msecs_to_jiffies(500));
> + if (ret == 0) {
> + dev_err(dwc->dev, "timeout to stop gadget.\n");
> + ret = -ETIMEDOUT;
> + } else {
> + goto try_again;

you are not really reading my comments. It's the third time I tell you
there's no need for try_again. If you can't complete a control transfer
in 500ms, you already have other issues. Take this thing out of here.

--
balbi

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