On Wed, 2021-09-29 at 08:14 +0000, Hayes Wang wrote: > Jason-ch Chen <jason-ch.chen@xxxxxxxxxxxx> > > Sent: Wednesday, September 29, 2021 1:18 PM > > [...] > > When unplugging RTL8152 Fast Ethernet Adapter which is plugged > > into an USB HUB, the driver would get -EPROTO for bulk transfer. > > There is a high probability to get the soft/hard lockup > > information if the driver continues to submit Rx before the HUB > > completes the detection of all hub ports and issue the > > disconnect event. > > I don't think it is a good idea. > For the other situations which return the same error code, you would > stop the rx, too. > However, the rx may re-work after being resubmitted for the other > cases. > > Best Regards, > Hayes > Hi Hayes, Sometimes Rx submits rapidly and the USB kernel driver of opensource cannot receive any disconnect event due to CPU heavy loading, which finally causes a system crash. Do you have any suggestions to modify the r8152 driver to prevent this situation happened? Regards, Jason
