[RFC PATCH] checkpatch: Discourage use with --f/--file outside of drivers/staging ?

[Joe Perches]

Perhaps some patch like this could help reduce the
number of ill-considered checkpatch submissions
for files outside of drivers/staging/

Concept and message wordsmithing appreciated...
---
 scripts/checkpatch.pl | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 34e4683de7a3..1a93421d5b1d 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2483,6 +2483,10 @@ sub process {
                                WARN("OBSOLETE",
                                     "$realfile is marked as 'obsolete' in the 
MAINTAINERS hierarchy.  No unnecessary modifications please.\n");
                        }
+                       if ($file && $filename !~ m@^drivers/staging/@) {
+                               WARN("CHECKPATCH_FILE",
+                                    "Using -f/--file with '$realfile' may not 
be appropriate.\n");
+                       }
                        if ($realfile =~ 
m@^(?:drivers/net/|net/|drivers/staging/)@) {
                                $check = 1;
                        } else {