[PATCH v3] kernel-doc: handle arrays with arithmetic expressions as initializers

[Randy Dunlap <randy.dunlap@oracle.com>]

From: Borislav Petkov <bbpetkov@yahoo.de>

In a different approach here's a patch that handles the special case of
composite arithmetic expressions in array size initializers. With it,
prior to pushing the split strings on the @first_arg array, I split the
keywords before the array name as before and then keep the array name
along with the subscript expression as a single whole element which gets
pushed last. In this manner, kernel-doc produces correct output without
removing whitespaces which makes the array subscripts unreadable in the docs.

Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
---
 scripts/kernel-doc |   11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

--- linux-2.6.21-rc6.orig/scripts/kernel-doc
+++ linux-2.6.21-rc6/scripts/kernel-doc
@@ -1456,7 +1456,16 @@ sub create_parameterlist($$$) {
 	    if ($args[0] =~ m/\*/) {
 		$args[0] =~ s/(\*+)\s*/ $1/;
 	    }
-	    my @first_arg = split('\s+', shift @args);
+
+	    my @first_arg;
+	    if ($args[0] =~ /^(.*\s+)(.*?\[.*\].*)$/) {
+		    shift @args;
+		    push(@first_arg, split('\s+', $1));
+		    push(@first_arg, $2);
+	    } else {
+		    @first_arg = split('\s+', shift @args);
+	    }
+
 	    unshift(@args, pop @first_arg);
 	    $type = join " ", @first_arg;