From 5023d3472d444747bfa12e9798d7993e7efb8287 Mon Sep 17 00:00:00 2001
From: Joe Perches <joe@perches.com>
Date: Mon, 17 Dec 2012 16:01:47 -0800
Subject: [PATCH] checkpatch: warn on unnecessary line continuations

When the previous line is not a line continuation and the current line has
a line continuation but is not a #define, emit a warning.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Peter Hurley <peter@hurleysoftware.com>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 scripts/checkpatch.pl | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index f18750e3bd6..d4f61a6fed5 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3013,6 +3013,15 @@ sub process {
 					      "Macros with complex values should be enclosed in parenthesis\n" . "$herectx");
 				}
 			}
+
+# check for line continuations outside of #defines
+
+		} else {
+			if ($prevline !~ /^..*\\$/ &&
+			    $line =~ /^\+.*\\$/) {
+				WARN("LINE_CONTINUATIONS",
+				     "Avoid unnecessary line continuations\n" . $herecurr);
+			}
 		}
 
 # do {} while (0) macro tests:
-- 
2.20.1