checkpatch: support function pointers for unnamed function definition arguments

Current unnamed function definition argument does not include function
pointer cases and it reports something like:

  WARNING: function definition argument 'void' should also have an identifier name
  +unsigned int (*dummy)(void);

Support function pointers for unnamed function arguments

Link: http://lkml.kernel.org/r/1505389925-31087-1-git-send-email-miles.chen@mediatek.com
Signed-off-by: Miles Chen <miles.chen@mediatek.com>
Acked-by: Joe Perches <joe@perches.com>
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 8b80bac055e490219f97d913f33bce165960fe92..aacbe918027b0bbe1b3f924856a66c050efea898 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -5957,7 +5957,7 @@ sub process {
 
 # check for function declarations that have arguments without identifier names
                if (defined $stat &&
-                   $stat =~ /^.\s*(?:extern\s+)?$Type\s*$Ident\s*\(\s*([^{]+)\s*\)\s*;/s &&
+                   $stat =~ /^.\s*(?:extern\s+)?$Type\s*(?:$Ident|\(\s*\*\s*$Ident\s*\))\s*\(\s*([^{]+)\s*\)\s*;/s &&
                    $1 ne "void") {
                        my $args = trim($1);
                        while ($args =~ m/\s*($Type\s*(?:$Ident|\(\s*\*\s*$Ident?\s*\)\s*$balanced_parens)?)/g) {