checkpatch: possible modifiers are not being correctly matched

Although we are finding the added modifier in the declaration below
we are not correctly matching it as a type.  Fix the declaration.

    static void __ref *vmem_alloc_pages(unsigned int order)
    {
    }

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 077a2ca..53ec394 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -168,12 +168,11 @@ our @modifierList = (
 );
 
 sub build_types {
-       my $mods = "(?:  \n" . join("|\n  ", @modifierList) . "\n)";
-       my $all = "(?:  \n" . join("|\n  ", @typeList) . "\n)";
+       my $mods = "(?x:  \n" . join("|\n  ", @modifierList) . "\n)";
+       my $all = "(?x:  \n" . join("|\n  ", @typeList) . "\n)";
        $Modifier       = qr{(?:$Attribute|$Sparse|$mods)};
        $NonptrType     = qr{
-                       (?:const\s+)?
-                       (?:$mods\s+)?
+                       (?:$Modifier\s+|const\s+)*
                        (?:
                                (?:typeof|__typeof__)\s*\(\s*\**\s*$Ident\s*\)|
                                (?:${all}\b)