[Bug 220127] USB devices sometimes(!) not seen at boot time

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=220127

--- Comment #2 from Matthias Apitz <guru at unixarea.de> ---

I followed a hints from Hans (HPS) and removed the conflicting USB devices from
the kernel, esp. the EHCI device.

> 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 now 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

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