checkpatch: handle casts better fixing false categorisation of : as binary

The following incantation is triggering categorisation of its colon (:) as
a binary form, which it is not:

	return foo ? (s8)bar : baz;

Handle casts differently from types in the categoriser, allowing us to
better track (s8)bar as a value and not a declaration.

Reported-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 8d010ac0efe1..3cec2990d51e 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -845,6 +845,11 @@ sub annotate_values {
                                 $av_preprocessor = 0;
                         }
 
+                } elsif ($cur =~ /^(\(\s*$Type\s*)\)/) {
+                        print "CAST($1)\n" if ($dbg_values > 1);
+                        push(@av_paren_type, $type);
+                        $type = 'C';
+
                 } elsif ($cur =~ /^($Type)\s*(?:$Ident|,|\)|\(|\s*$)/) {
                         print "DECLARE($1)\n" if ($dbg_values > 1);
                         $type = 'T';