checkpatch: make extern in .h prototypes quieter

The use of extern in .h files is a bit contentious.

Make the warning be emitted only when --strict is used on the command
line.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: David Howells <dhowells@redhat.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 47016c304c847efffb96da5358224a9b5a93cc5e..66cad506b8a2a944f2873856ef0078445f673b8b 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3975,8 +3975,8 @@ sub string_find_replace {
 # check for new externs in .h files.
                if ($realfile =~ /\.h$/ &&
                    $line =~ /^\+\s*(extern\s+)$Type\s*$Ident\s*\(/s) {
-                       if (WARN("AVOID_EXTERNS",
-                                "extern prototypes should be avoided in .h files\n" . $herecurr) &&
+                       if (CHK("AVOID_EXTERNS",
+                               "extern prototypes should be avoided in .h files\n" . $herecurr) &&
                            $fix) {
                                $fixed[$linenr - 1] =~ s/(.*)\bextern\b\s*(.*)/$1$2/;
                        }