kernel-doc: fix leading dot in man-mode output

If a parameter description begins with a '.', this indicates a "request"
for "man" mode output (*roff), so it needs special handling.

Problem case is in include/asm-i386/atomic.h for function
atomic_add_unless():
 * @u: ...unless v is equal to u.
This parameter description is currently not printed in man mode output.

[akpm@linux-foundation.org: cleanup]
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index f5862abe0311..1f5835115cad 100755
--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -404,7 +404,11 @@ sub output_highlight {
             print $lineprefix, $blankline;
         } else {
             $line =~ s/\\\\\\/\&/g;
-            print $lineprefix, $line;
+            if ($output_mode eq "man" && substr($line, 0, 1) eq ".") {
+                print "\\&$line";
+            } else {
+                print $lineprefix, $line;
+            }
         }
         print "\n";
     }