checkpatch: values: double ampersand may be unary

It is possible to use double ampersand (&&) in unary context where it
means the address of a goto label.  Handle spacing for it.

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 6f821a0..1148213 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -858,7 +858,7 @@ sub annotate_values {
                        print "CLOSE($1)\n" if ($dbg_values > 1);
                        $type = 'N';
 
-               } elsif ($cur =~ /^(-(?![->])|\+(?!\+)|\*|\&(?!\&))/o) {
+               } elsif ($cur =~ /^(-(?![->])|\+(?!\+)|\*|\&\&|\&)/o) {
                        my $variant;
 
                        print "OPV($1)\n" if ($dbg_values > 1);
@@ -1634,7 +1634,7 @@ sub process {
                                # unary operator, or a cast
                                } elsif ($op eq '!' || $op eq '~' ||
                                         $opv eq '*U' || $opv eq '-U' ||
-                                        $opv eq '&U') {
+                                        $opv eq '&U' || $opv eq '&&U') {
                                        if ($ctx !~ /[WEBC]x./ && $ca !~ /(?:\)|!|~|\*|-|\&|\||\+\+|\-\-|\{)$/) {
                                                ERROR("space required before that '$op' $at\n" . $hereptr);
                                        }