Messages in this thread | | | Date | Mon, 29 Apr 2013 14:13:06 -0700 | Subject | Re: [GIT PATCH] char/misc patches for 3.10-rc1 | From | Linus Torvalds <> |
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On Mon, Apr 29, 2013 at 1:50 PM, Arnd Bergmann <arnd@arndb.de> wrote: > > Fair enough. Of course the distinction here is not based on what it > does, but how it gets used.
Even technically, a "bus" generally has a topology. It has addresses, and it has a protocol.
i2c is a bus. PCI is a bus. And something like SSB is a bus. There is a protocol, there's device with identity on the bus, there's stuff going on.
The SBBI driver has neither addresses nor a protocol. It's literally just an embedded on-chip serial device as far as I can tell. There's nothing "bus" about it. It's just a hose.
Yeah, yeah, at some point you can call "anything" a bus. I could call my little two-seater car a "school bus", because it has wheels, it's even yellow exactly like the school buses around here. And I can put a child in it. So my little yellow two-seater must be a bus too. It's all just how you define your words.
But it's a damn big reach. I didn't use to call the serial line connecting my computer to the modem a "bus". Even if it connected two devices.
Linus
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