checkpatch: extend line continuation test

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

Signed-off-by: Joe Perches <joe@perches.com>
Tested-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 6fa167758f82..3e9fee60642c 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3009,10 +3009,12 @@ 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);