Bug ID: 111251
Hello,
I have a NEC uPD720200 USB3.0 controller in a Thinkpad W520 laptop on
kernel 4.4.1-gentoo.
0e:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host
Controller (rev 04) (prog-if 30 [XHCI])
Subsystem: Lenovo uPD720200 USB 3.0 Host Controller
Flags: bus master, fast devsel, latency 0
Memory at f3800000 (64-bit, non-prefetchable) [size=8K]
Capabilities: [50] Power Management version 3
Capabilities: [70] MSI: Enable- Count=1/8 Maskable- 64bit+
Capabilities: [90] MSI-X: Enable+ Count=8 Masked-
Capabilities: [a0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Device Serial Number ff-ff-ff-ff-ff-ff-ff-ff
Capabilities: [150] Latency Tolerance Reporting
Kernel driver in use: xhci_hcd
Kernel modules: xhci_pci
When runtime power control for this controller is disabled
(/sys/bus/pci/devices/0000:0e:00.0/power/control = on), the controller
works fine and reaches over 120MB/s transfer rates.
When runtime power control for this controller is enabled
(/sys/bus/pci/devices/0000:0e:00.0/power/control = auto), two effects
can be observed:
- Transfer rates are much lower at around 30MB/s
- During transfers, the controller dies after a couple of seconds:
xhci_hcd 0000:0e:00.0: xHCI host not responding to stop endpoint command.
xhci_hcd 0000:0e:00.0: Assuming host is dying, halting host.
xhci_hcd 0000:0e:00.0: Host not halted after 16000 microseconds.
xhci_hcd 0000:0e:00.0: Non-responsive xHCI host is not halting.
xhci_hcd 0000:0e:00.0: Completing active URBs anyway.
xhci_hcd 0000:0e:00.0: HC died; cleaning up
sd 9:0:0:0: [sdc] tag#0 FAILED Result: hostbyte=DID_ERROR
driverbyte=DRIVER_OK
sd 9:0:0:0: [sdc] tag#0 CDB: Read(10) 28 00 00 19 a9 00 00 00 f0 00
blk_update_request: I/O error, dev sdc, sector 1681664
xhci_hcd 0000:0e:00.0: Stopped the command ring failed, maybe the host
is dead
xhci_hcd 0000:0e:00.0: Host not halted after 16000 microseconds.
xhci_hcd 0000:0e:00.0: Abort command ring failed
xhci_hcd 0000:0e:00.0: HC died; cleaning up
At this point, a reboot is required to reactivate the controller,
unloading and reloading the xhci_* modules does not work.
I'll be happy to assist in getting this fixed :)
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