Hello all,
i'm working on ath9k_htc's suspend/resume issue and need your help.
This devices has problems with suspend mode. After it resume, USB_PHY
stay misconfigured. Only way to bring PHY back to normal is reset it.
Normally it is not a problem for EHCI controllers - they will reset this
adapter even without USB_QUIRK_RESET_RESUME. But it is not reseted on
XHCI controller. At leas not on this one:
lspci -nvvs 00:14.0
00:14.0 0c03: 8086:1e31 (rev 04) (prog-if 30 [XHCI])
Subsystem: 1043:1517
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 41
Region 0: Memory at f7d00000 (64-bit, non-prefetchable) [size=64K]
Capabilities: [70] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA
PME(D0-,D1-,D2-,D3hot+,D3cold+)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [80] MSI: Enable+ Count=1/8 Maskable- 64bit+
Address: 00000000fee0a00c Data: 4122
Kernel driver in use: xhci_hcd
here is some log after device resume:
[ 6719.265241] ath9k_htc: Driver unloaded
[ 6723.581445] usb 3-2: reset high-speed USB device number 32 using xhci_hcd
[ 6723.602774] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called
with disabled ep ffff880114a40800
[ 6723.602778] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called
with disabled ep ffff880114a40840
[ 6723.602781] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called
with disabled ep ffff880114a40880
[ 6723.602784] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called
with disabled ep ffff880114a408c0
[ 6723.602786] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called
with disabled ep ffff880114a40900
[ 6723.602790] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called
with disabled ep ffff880114a40940
[ 6723.603138] usb 3-2: ath9k_htc: Firmware htc_9271.fw requested
probably HC preventing to reset it.
As work around i can reset USB_PHY directly in adapter. But it will make
host disconnect and connect this device, assign new device number and
reload module. So it will introduce new problems.
--
Regards,
Oleksij
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