[PATCH V2] checkpatch: extend line continuation test

[Joe Perches <joe@perches.com>]

Preprocessor directives and asm statements should be
allowed to have a line continuation.

Signed-off-by: Joe Perches <joe@perches.com>
---
V2:
Make the check for preprocessor directives work properly
# is not optional.

 scripts/checkpatch.pl |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index d2d5ba1..bfb06ee 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3006,10 +3006,12 @@ sub process {
 				}
 			}
 
-# check for line continuations outside of #defines
+# check for line continuations outside of #defines, preprocessor #, and asm
 
 		} else {
 			if ($prevline !~ /^..*\\$/ &&
+			    $line !~ /^\+\s*\#.*\\$/ &&		# preprocessor
+			    $line !~ /^\+.*\b(__asm__|asm)\b.*\\$/ &&	# asm
 			    $line =~ /^\+.*\\$/) {
 				WARN("LINE_CONTINUATIONS",
 				     "Avoid unnecessary line continuations\n" . $herecurr);