USB devices sometimes not seen at boot time

[Hans Petter Selasky]

On 06/30/17 12:30, Matthias Apitz wrote:
> El día viernes, junio 30, 2017 a las 08:34:21a. m. +0200, Matthias Apitz escribió:
> 
>> Hi,
>>
>> Thanks for the hint. I disabled the three entries for uhci, ohci and ehci:
>>
>> # USB support
>> options         USB_DEBUG               # enable debug msgs
>> # device                uhci            # UHCI PCI->USB interface
>> # device                ohci            # OHCI PCI->USB interface
>> # device                ehci            # EHCI PCI->USB interface (USB 2.0)
>> device          xhci                    # XHCI PCI->USB interface (USB 3.0)
>> device          usb                     # USB Bus (required)
>> device          ukbd                    # Keyboard
>> device          umass                   # Disks/Mass storage - Requires scbus and da
>>
>> and maybe this will help already. I will let you know and update the PR
>> later the day.
> 
> The new kernel detects fine the uTrust Token on USB:
> 
> $ dmesg | egrep 'ugen|uhub|xhci|ehci'
> xhci0: <Intel Panther Point USB 3.0 controller> mem 0xe0500000-0xe050ffff at device 20.0 on pci0
> xhci0: 32 bytes context size, 64-bit DMA
> xhci0: Port routing mask set to 0xffffffff
> usbus0 on xhci0
> ugen0.1: <0x8086 XHCI root HUB> at usbus0
> uhub0: <0x8086 XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0
> uhub0: 13 ports with 13 removable, self powered
> ugen0.2: <SunplusIT Inc HD WebCam> at usbus0
> ugen0.3: <vendor 0x0489 product 0xe056> at usbus0
> ugen0.4: <Identiv uTrust 3512 SAM slot Token> at usbus0
> 

OK, nice to know. We might want to delay the attachment of the 
ehci/ohci/uhci drivers after xhci by default if this is a widespread issue.

--HPS