Hi, Baolin Wang <baolin.w...@linaro.org> writes: > When system has stpped the gadget, we should avoid queuing any requests
queueing is *not* a problem. Starting is. In fact, that's what your
patch is doing.
> which will cause tranfer failed. Thus adding some disconnect checking to
^^^^^^^
transfer
> avoid this situation.
>
> Signed-off-by: Baolin Wang <baolin.w...@linaro.org>
> ---
> Changes since v2:
> - Move disconnect checking into dwc3_send_gadget_ep_cmd().
> - Rename completion name and issue complete() at one place.
> - Move completion initialization into dwc3_gadget_init().
>
> Changes since v1:
> - Split into 2 separate ptaches.
> - Choose complete mechanism instead of polling.
> ---
> drivers/usb/dwc3/gadget.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
> index 1783406..ca2ae5b 100644
> --- a/drivers/usb/dwc3/gadget.c
> +++ b/drivers/usb/dwc3/gadget.c
> @@ -241,6 +241,9 @@ int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned
> cmd,
> int susphy = false;
> int ret = -EINVAL;
>
> + if (!dwc->pullups_connected)
> + return -ESHUTDOWN;
> +
> /*
> * Synopsys Databook 2.60a states, on section 6.3.2.5.[1-8], that if
> * we're issuing an endpoint command, we must check if
> --
> 1.7.9.5
>
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