Hi,
Bin Liu <b-liu@xxxxxx> writes:
>> >> @@ -630,6 +635,20 @@ static inline int usb_endpoint_maxp(const struct usb_endpoint_descriptor *epd)
>> >> return __le16_to_cpu(epd->wMaxPacketSize);
>> >> }
>> >>
>> >> +/**
>> >> + * usb_endpoint_isoc_maxp_mult - get endpoint's transactional opportunities
>> >> + * @epd: endpoint to be checked
>> >> + *
>> >> + * Return @epd's wMaxPacketSize[12:11] + 1
>> >> + */
>> >> +static inline int
>> >> +usb_endpoint_isoc_maxp_mult(const struct usb_endpoint_descriptor *epd)
>> >> +{
>> >> + int maxp = __le16_to_cpu(epd->wMaxPacketSize);
>> >> +
>> >> + return USB_EP_ISOC_MAXP_MULT(maxp) + 1;
>> >> +}
>> >> +
>> >> static inline int usb_endpoint_interrupt_type(
>> >> const struct usb_endpoint_descriptor *epd)
>> >> {
>> >>
>> > Does this mean the issue of isoc high bandwidth transfer was fixed by
>> > this patchset per your test?
>>
>> No, I couldn't get g_webcam to work yet.
>
> In mainline, g_webcam is broken with DWC3. Also these two patches don't
> fix the issue on v4.4.21.
care to send tracepoint output? Best if you could cherry pick my latest
tracepoint changes so we have the best output possible.
I have also built a branch with v4.4.21 + all dwc3 patches (except for
device properties and PCI stuff) which you could use for testing. If you
run with that, then I can get proper trace output and I can try to
figure out what's missing.
Branch is here:
git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git usb/v4.4.21+dwc3
thanks
--
balbi
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