On 28.08.21 11:48, Heikki Krogerus wrote:
On Thu, Aug 26, 2021 at 09:50:58PM +0200, Ulrich Huber wrote:
I just got around to test your patches. They seem to solve the issue
completely! Whatever I tried, the behavior of the port stayed consistent and
no error messages appeared in the log.
I'll continue using the patch for now and will notify you, should any issue
appear.
Great! If there are no problems, I'll send them to Greg after the next
-rc1.
It seems I just found one such problem. After waking from hibernation I
get the following entries in the kernel log:
Aug 29 11:55:31 lenovo-ulrich kernel: ucsi_acpi USBC000:00:
GET_CONNECTOR_STATUS failed (-5)
Aug 29 11:55:31 lenovo-ulrich kernel: ucsi_acpi USBC000:00:
GET_CONNECTOR_STATUS failed (-5)
Aug 29 11:55:31 lenovo-ulrich kernel: usb 3-6: reset high-speed USB
device number 3 using xhci_hcd
Aug 29 11:55:31 lenovo-ulrich kernel: ish-hid
{33AECD58-B679-4E54-9BD9-A04D34F0C226}: [hid-ish]: enum_devices_do>
Aug 29 11:55:31 lenovo-ulrich kernel: usb 3-10: reset full-speed USB
device number 4 using xhci_hcd
Aug 29 11:55:31 lenovo-ulrich kernel: usb 3-5: reset full-speed USB
device number 2 using xhci_hcd
It is obviously related with the system resetting the hardware after
waking up. Most likely the driver tries to communicate with the device
while it is in a state where it is not able to respond. I do not get
this after each hibernation, so far it is the first time I have seen
this. I'll try to find a way to reproduce this.
thanks,
