checkpatch: warn when a MAINTAINERS entry isn't [A-Z]:\t

For consistency, MAINTAINERS entries should be an upper case letter,
then a colon, then a tab, then the value.

Warn when an entry doesn't have this form.  --fix it too.

Link: http://lkml.kernel.org/r/9aaaf03ec10adf3888b5e98dd2176b7fe9b5fad8.1496343345.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.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 907e079..3cf0550 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2776,6 +2776,17 @@ sub process {
                        #print "is_start<$is_start> is_end<$is_end> length<$length>\n";
                }
 
+# check for MAINTAINERS entries that don't have the right form
+               if ($realfile =~ /^MAINTAINERS$/ &&
+                   $rawline =~ /^\+[A-Z]:/ &&
+                   $rawline !~ /^\+[A-Z]:\t\S/) {
+                       if (WARN("MAINTAINERS_STYLE",
+                                "MAINTAINERS entries use one tab after TYPE:\n" . $herecurr) &&
+                           $fix) {
+                               $fixed[$fixlinenr] =~ s/^(\+[A-Z]):\s*/$1:\t/;
+                       }
+               }
+
 # discourage the use of boolean for type definition attributes of Kconfig options
                if ($realfile =~ /Kconfig/ &&
                    $line =~ /^\+\s*\bboolean\b/) {