checkpatch: comment ends inside strings is most likely not an open comment

When we are detecting whether a comment is open when we start a hunk we
check for the first comment edge in the hunk and assume its inverse.
However if the hunk contains something like below, then we will assume
that a comment was open.  Update this heuristic to see if the comment edge
is obviously within double quotes and ignore it if so:

	foo(" */);

Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 9883de3..45a97c9 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -367,7 +367,7 @@ sub sanitise_line {
                        }
                }
 
-               #print "SQ:$sanitise_quote\n";
+               #print "c<$c> SQ<$sanitise_quote>\n";
                if ($off != 0 && $sanitise_quote eq '*/' && $c ne "\t") {
                        substr($res, $off, 1, $;);
                } elsif ($off != 0 && $sanitise_quote && $c ne "\t") {
@@ -1103,8 +1103,11 @@ sub process {
                                $cnt--;
                                #print "RAW<$rawlines[$ln - 1]>\n";
                                last if (!defined $rawlines[$ln - 1]);
-                               ($edge) = ($rawlines[$ln - 1] =~ m@(/\*|\*/)@);
-                               last if (defined $edge);
+                               if ($rawlines[$ln - 1] =~ m@(/\*|\*/)@ &&
+                                   $rawlines[$ln - 1] !~ m@"[^"]*(?:/\*|\*/)[^"]*"@) {
+                                       ($edge) = $1;
+                                       last;
+                               }
                        }
                        if (defined $edge && $edge eq '*/') {
                                $in_comment = 1;