Hi, This provides something that gets discussed regularly: stable device IDs. Straightforward; most of it was already present:
- Moves "bus_name" out of HCD framework into usb_bus.
This accounts for _by far the bulk_ of this patch, since
every use of that original field needed to change.
- Make Vojtech's usb_make_path() use bus_name instead
of unstable bus numbers ... and usb_device->devpath
instead of recomputing that same info. Combine two
stable IDs, and the result is still stable. And since both
are precomputed, usb_make_path() turns into only an
error check wrapped around snprintf() ... so I inlined it.
- Minor tweak to usb_device->devpath construction. It
still uses "/" for the root hub (better suggestions?) but
Vojtech wanted "." for separators, so I changed that.
- The older HCDs (uhci.c etc) initialize usb_bus.bus_name,
as well as the sharable HCD framework
- HCD framework no longer uses "bus" member.
These IDs are currently exposed in "input" hotplugging, and
my next patch addresses that for USB network devices.
Please merge to Linus' tree.
- Dave
usb-0408.patch
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