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SubjectBoot stops with ehci-pci, kernel 4.3.0
Date
Hello,

I am facing an strange issue. I am unable to boot a Dell PowerEdge R210
if ehci-pci module is built into the kernel. The _ marker just blinks,
after few minutes nothing has changed. The last messages it does display
that I can get thru iDRAC is:

ehci_hcd: USB 2.0 'Enhanced' Host Controller
ehci-pci: EHCI PCI platform driver
ehci-pci 0000:00:1a.0: EHCI Host Controller
ehci-pci 0000:00:1a.0: new USB bus registred, assigned bust number 1
ehci-pci 0000:00:1a.0: debug port 2
ehci-pci 0000:00:1a.0: irq 22, io mem 0xdf0fa0

if I disable the USB support, the kernel does boots just fine. Booting
Ubuntu 14.04's kernel 3.13.0-24-generic does not seems to suffer from
this very problem.

The lspci -vvv for ehci-pci (from ubuntu 14.04 rescue image):

00:1a.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset
USB2 Enhanced Host Controller (rev 05) (prog-if 20 [EHCI])
Subsystem: Dell Device 02a5
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 22
Region 0: Memory at df0fa000 (32-bit, non-prefetchable) [size=1K]
Capabilities: [50] 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: [58] Debug port: BAR=1 offset=00a0
Capabilities: [98] PCI Advanced Features
AFCap: TP+ FLR+
AFCtrl: FLR-
AFStatus: TP-
Kernel driver in use: ehci-pci

For the test purpose I've created a bare-minimal kernel with `make
allnoconfig`. Not even filesystem has been included, and it still fails
the same way.

I'd appreciate any help on resolving this very issue.

-- Piotr.


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