checkpatch: add check for too short Kconfig descriptions
I've seen various new Kconfigs with rather unhelpful one liner
descriptions. Add a Kconfig warning for a minimum length of the Kconfig
help section.
Right now I arbitarily chose 4. The exact value can be debated.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Andy Whitcroft <apw@shadowen.org>
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 f2bbea9..de0f467 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1382,6 +1382,21 @@
ERROR("trailing whitespace\n" . $herevet);
}
+# check for Kconfig help text having a real description
+ if ($realfile =~ /Kconfig/ &&
+ $line =~ /\+?\s*(---)?help(---)?$/) {
+ my $length = 0;
+ for (my $l = $linenr; defined($lines[$l]); $l++) {
+ my $f = $lines[$l];
+ $f =~ s/#.*//;
+ $f =~ s/^\s+//;
+ next if ($f =~ /^$/);
+ last if ($f =~ /^\s*config\s/);
+ $length++;
+ }
+ WARN("please write a paragraph that describes the config symbol fully\n" . $herecurr) if ($length < 4);
+ }
+
# check we are in a valid source file if not then ignore this hunk
next if ($realfile !~ /\.(h|c|s|S|pl|sh)$/);