On 30/08/2017 08:02, Greg Kroah-Hartman wrote: > To get back to the original issue here, the hardware seems to have died, > the driver stops talking to it, and all is good. The "regression" here > is that we now properly can determine that the hardware is crap. Before 4.12, when I unplugged my USB3 Flash drive, Linux would detect a few "Uncorrected Non-Fatal errors" via AER, but it was still possible to plug the drive back in. Since 4.12, once I unplug the drive, the whole USB3 card is marked as dead (all 4 ports), and I can no longer plug anything in (not even the USB2 drive that didn't have any issues, IIRC). It seems a bit premature to "mark as dead" something that remains functional, doesn't it? Disclaimer, there are many variables in this setup, and I've only tested a small fraction of the problem space: only one system, only one USB3 board, only one USB3 Flash drive. > So, how do you think we should proceed, delay a bit longer before saying > the device is gone? How long is "long enough"? How many bus errors are > we allowed to tolerate (hint, the PCI spec says none...) > > Maybe someone wants to get to the root problem here, why is the hardware > suddenly reporting all 1s? I'm afraid I won't be able to make any progress on this front, unless I can get my hands on a PCIe packet analyzer. Regards. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
