checkpatch: clean up structure definition macro handline

Handle definitions such as the following correctly, it is not
a complex statement:

    #define PREALLOC(NAME, START, END, FLAGS) {     \
		    .name = (NAME),                 \
		    .start = (START),               \
		    .end = (END),                   \
		    .flags = (FLAGS)                \
	    },

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>
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 53b2eae..d5361e4 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2476,8 +2476,8 @@
 				\.$Ident\s*=\s*|
 				^\"|\"$
 			}x;
-			#print "REST<$rest> dstat<$dstat>\n";
-			if ($rest ne '') {
+			#print "REST<$rest> dstat<$dstat> ctx<$ctx>\n";
+			if ($rest ne '' && $rest ne ',') {
 				if ($rest !~ /while\s*\(/ &&
 				    $dstat !~ /$exceptions/)
 				{