lspci: Do not show -[00]- bus in tree output

Secondary or subordinate bus cannot be zero. Zero value could indicate
either invalid secondary bus value or the fact that secondary bus value was
not filled or indicates non-compliant PCI-to-PCI bridge. This change makes
tree output better readable when bus numbers are not known or not provided.

diff --git a/ls-tree.c b/ls-tree.c
index fede581156e4d288759f3809bf467f2b3af37d89..f8154a2b034a67a3b22dd4eb2e5da82d542256d2 100644 (file)
--- a/ls-tree.c
+++ b/ls-tree.c
@@ -258,7 +258,9 @@ show_tree_dev(struct device *d, char *line, char *p)
   for (b=&host_bridge; b; b=b->chain)
     if (b->br_dev == d)
       {
-       if (b->secondary == b->subordinate)
+       if (b->secondary == 0)
+         p = tree_printf(line, p, "-");
+       else if (b->secondary == b->subordinate)
          p = tree_printf(line, p, "-[%02x]-", b->secondary);
        else
          p = tree_printf(line, p, "-[%02x-%02x]-", b->secondary, b->subordinate);