On Wed, Mar 08, 2023 at 05:10:17PM +0000, Joakim Tjernlund wrote: > we are using fsl-ls1043a-rdb based design but with a ls1023a SOC and > use USB0 in gadget mode running either NCM or RNDIS ethernet on top. > > When we connect the gadget to a PC(Linux of Windows) over an USB2 hub, > networking(NCM or RNDIS) works well. > > However, when we connect the gadget directly to the PC/laptop which uses USB3 > we see something odd: > Ping from PC to gadget works. > Ping from gadget to laptop does not. However if we also ping from PC at the same time we > see gadget to PC start working. > Seems like ping from the PC tiggers the gadget to see incoming pkgs somehow. > > Any idea what might be wrong or how to debug this? > Kernel 5.15.87 5.15.y is very old, does this also happen on 6.2? thanks, greg k-h
