tree d646617e67bb10fe1445a3adc9255e50a7799066
parent c606c537b1a52a2bcdc9addcb75481b85a0e4932
author Barret Rhoden <brho@cs.berkeley.edu> 1572645590 -0400
committer Barret Rhoden <brho@cs.berkeley.edu> 1583266410 -0500

pci: add a helper to lookup a pci_device by string

This is for #device code that often wants to find a pci_device that
userspace specified by string.  The string is of the form 00:00.0.  You
can skip leading zeros.

This one throws on error, since the intent is that user-interface code
will use it.  The older match_tbdf() is used in a few internal places,
with a custom format for the int argument (MKBUS()).

Signed-off-by: Barret Rhoden <brho@cs.berkeley.edu>