Hi Mathias,
We are using an Intel Atom based board and the usb controller is:
00:14.0 USB Controller: Intel Corporation Device 0f35 (rev 11) (prog-if 30)
Flags: bus master, medium devsel, latency 0, IRQ 130
Memory at df7e0000 (64-bit, non-prefetchable) [size=64K]
Capabilities: [70] Power Management version 2
Capabilities: [80] Message Signalled Interrupts: Mask- 64bit+ Queue=0/3 Enable+
Kernel driver in use: xhci_hcd
Occassionally we are seeing that the dmesg is flooded with errors like:
[ 607.763965] xhci_hcd 0000:00:14.0: WARN Event TRB for slot 8 ep 5 with no TDs queued?
[ 607.764968] xhci_hcd 0000:00:14.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 5 comp_code 1
[ 607.764976] xhci_hcd 0000:00:14.0: Looking for event-dma 0000000032a211d0 trb-start 0000000032a21060 trb-end 0000000032a21060 seg-start 0000000032a21000 seg-end 0000000032a21ff0
We are using v4.14.2 kernel and I have also applied:
e4ec40ec4b26 ("xhci: Don't show incorrect WARN message about events for empty rings")
on top of it. The code says "HC is busted, give up!".
Should I really give up or something can be done at this point?
Will really your appreciate your help in this.
--
Regards
Sudip
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