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Module aliases etc.

I'm trying to disentangle some driver issues so that I can backport a module for a colleague with a weird peripheral. Can anybody tell me what the "b" field here is, and in particular the significance of the number (3 or 5 in the example below)?

alias:          hid:b0003g*v0000056Ep0000010D
alias:          hid:b0003g*v0000056Ep0000010C
alias:          hid:b0003g*v0000056Ep000000FF
alias:          hid:b0003g*v0000056Ep000000FE
alias:          hid:b0005g*v0000056Ep00000061

I'd assumed from udev/hwdb that it was a bus identifier applicable to something that was actually plugged in, but I'm curious to see it varying on a virgin system that's never seen the peripheral in question.

Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

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