On Thu, Jun 10, 2021 at 7:38 PM Felipe Balbi <balbi@xxxxxxxxxx> wrote: > > > Hi, > > kun peng <kunpeng0891@xxxxxxxxx> writes: > > On Thu, Jun 10, 2021 at 6:07 PM Felipe Balbi <balbi@xxxxxxxxxx> wrote: > >> > >> Hi, > >> > >> kun peng <kunpeng0891@xxxxxxxxx> writes: > >> > Hi ， I'm using the 4*A53 with DWC3 USB controller, my hardware to work > >> > like a USB camera and so make use of the USB 3.0 UVC gadget driver。 > >> > usb3.0 isoc transfer with missisoc -18，larger maxburst is set, the > >> > more -18 appears。 > >> > but from trace info, the trb has been put in advance。 > >> > > >> > test setting: > >> > dwc3 driver version：5.12 > >> > PC： potplayer > >> > > >> > maxpacket : 3072 > >> > maxburst : 15 > >> > interval : 1 > >> > UVC_NUM_REQUESTS: 8 > >> > >> sorry, you're running 4.14.74 kernel. That's far too old for this forum > >> to help you. Try reproducing with the latest v5.13-rc kernel. > >> > >> -- > >> balbi > > > > thanks for your reply. > > > > my kernel is 4.14, but usb and uvc related driver has been update to > > 5.12.0 linux main line. > > The problem mentioned above is after the update. > > right, many other things happen in the framework. You could bisect and > try to find the offending commit, but this forum can't do much to help, > sorry. > > -- > balbi previous 4.14 was problematic, so we updated it to 5.12. after the update: usb2.0 isoc\bulk\ all is well. usb3.0 isoc with many -18 error... bulk is normal thanks -- kun
