Hi, Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> writes: >> >>>>>>>> I've been working on this series for a while now. I feels like >> >>>>>>>> after this series the transfer management code is far easier to >> >>>>>>>> read and understand. >> >>>>>>>> >> >>>>>>>> Based on my tests, I have no regressions. Tested g_mass_storage >> >>>>>>>> and all of testusb's tests (including ISOC). >> >>>>>>>> >> >>>>>>>> Patches are also available on dwc3-improve-isoc-endpoints in my >> >>>>>>>> k.org tree. Test reports would be VERY, VERY, VERY welcome. Please >> >>>>>>>> give this a go so we avoid regressions on v4.18. >> >>>>>>> >> >>>>>>> Have you tested g_webcam? I just tested your >> >>>>>>> dwc3-improve-isoc-endpoints >> >>>>>> >> >>>>>> for isoc I only tested g_zero. >> >>>>> >> >>>>> Then writting down details on what I observed probably won't help you >> >>>>> >> >>>>> :( >> >>> >> >>> I got webcam running here, it sure _is_ helpful to let me know how you >> >> >> >> Great! >> >> >> >>> trigger the problem ;-) Also, high-speed or super-speed? >> >> >> >> Both. Long story short - super-speed doesn't stream the yuv video, >> >> gadget side kernel prints "VS request completed with status -18." >> >> flooding messages. >> >> >> >> high-speed does stream the video, but stopping the host application >> >> (both yavta and luvcview) causes gadget side kernel prints error message >> >> (I didn't keep the log). Then restart the host application doesn't >> >> stream the video any more. >> >> What is your test platform ? I'm using a TI AM574x EVM and I can't get video >> to stream at all in high-speed. Super-speed seems out of question as the >> only port supporting device mode on that board is connect to a DWC3 >> instance that is limited to high-speed :-/ I'm testing v4.17-rc5 without >> this patch series applied, please let me know if I should apply it first. > > I tried to merge your dwc3-improve-isoc-endpoints branch but it unfortunately > didn't help. I still can't capture any frame on the host. > > With and without your patches I get the following messages in the device's > kernel log. > > - At gadget creation and plug time: > > [ 12.361591] configfs-gadget gadget: uvc_function_bind > [ 16.783801] configfs-gadget gadget: high-speed config #1: c > [ 16.790032] configfs-gadget gadget: uvc_function_set_alt(0, 0) > [ 16.796166] configfs-gadget gadget: reset UVC Control > [ 16.801537] configfs-gadget gadget: uvc_function_set_alt(1, 0) > [ 16.818799] configfs-gadget gadget: uvc_function_set_alt(1, 0) > > - At stream start time: > > [ 23.093891] configfs-gadget gadget: uvc_function_set_alt(1, 1) > [ 23.103072] configfs-gadget gadget: reset UVC > [ 23.111108] dwc3 488d0000.usb: ep2in: ran out of requests > > and everything stops there. so, I sent you some private emails while on vacations, any news here? -- balbi
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