Hi, On 13 October 2016 at 16:16, Janusz Dziedzic <janusz.dzied...@tieto.com> wrote: > On 13 October 2016 at 09:37, Baolin Wang <baolin.w...@linaro.org> wrote: >> Hi, >> >> On 13 October 2016 at 15:06, Felipe Balbi <ba...@kernel.org> wrote: >>> >>> 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. >> >> OK. >> >>> >>>> which will cause tranfer failed. Thus adding some disconnect checking to >>> ^^^^^^^ >>> transfer >> >> Sorry for spelling mistake, will fix it. >> >>> >>>> 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; >>>> + > > you skip trace_dwc3_gadget_ep_cmd()
Yes, we did not need trace here since we did not send out the command. > > BR > Janusz > >>>> /* >>>> * 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 >>>> >>>> -- >>>> To unsubscribe from this list: send the line "unsubscribe linux-usb" in >>>> the body of a message to majord...@vger.kernel.org >>>> More majordomo info at http://vger.kernel.org/majordomo-info.html >>> >>> -- >>> balbi >> >> >> >> -- >> Baolin.wang >> Best Regards >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-usb" in >> the body of a message to majord...@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html -- Baolin.wang Best Regards
