Re: [PATCH] usb: dwc3: gadget: Add the suspend state checking when stopping gadget

From: Felipe Balbi
Date: Mon Jun 20 2016 - 04:16:23 EST


Baolin Wang <baolin.wang@xxxxxxxxxx> writes:

> It will be crash to stop gadget when the dwc3 device had been into suspend
> state, thus we need to check if the dwc3 device had been into suspend state
> when UDC try to stop gadget.
>
> By the way I have rebased on your 'testing/next' branch.

do you really want this note to be in commit log? Seems like this should
be after tearline below.

>
> Signed-off-by: Baolin Wang <baolin.wang@xxxxxxxxxx>
> ---
> 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 6dde376..351769e 100644
> --- a/drivers/usb/dwc3/gadget.c
> +++ b/drivers/usb/dwc3/gadget.c
> @@ -1791,6 +1791,9 @@ err0:
>
> static void __dwc3_gadget_stop(struct dwc3 *dwc)
> {
> + if (pm_runtime_suspended(dwc->dev))
> + return;
> +
> dwc3_gadget_disable_irq(dwc);
> __dwc3_gadget_ep_disable(dwc->eps[0]);
> __dwc3_gadget_ep_disable(dwc->eps[1]);
> --
> 1.7.9.5
>
> --
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--
balbi

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