linux-kernel - [PATCH] checkpatch: add check for NONNETWORKING_BLOCK_COMMENT

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Date:   Wed, 10 Jun 2020 13:26:40 -0700
From:   Scott Branden <scott.branden@...adcom.com>
To:     Andy Whitcroft <apw@...onical.com>, Joe Perches <joe@...ches.com>
Cc:     BCM Kernel Feedback <bcm-kernel-feedback-list@...adcom.com>,
        linux-kernel@...r.kernel.org,
        Scott Branden <scott.branden@...adcom.com>
Subject: [PATCH] checkpatch: add check for NONNETWORKING_BLOCK_COMMENT_STYLE

NETWORKING_BLOCK_COMMENT_STYLE is supported by checkpatch but there
doesn't seem to be any check for the standard block comment style.
Add support for NONNETWORKING_BLOCK_COMMENT_STYLE to check for empty /*
on first line of non-networking block comments.

Signed-off-by: Scott Branden <scott.branden@...adcom.com>
---
 scripts/checkpatch.pl | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 524df88f9364..899e380782c0 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3408,6 +3408,16 @@ sub process {
 			     "networking block comments don't use an empty /* line, use /* Comment...\n" . $hereprev);
 		}
 
+# Non-Networking with an empty initial /*
+		if ($realfile !~ m@^(drivers/net/|net/)@ &&
+		    $prevrawline =~ /^\+[ \t]*\/\*[ \t]/ &&
+		    $prevrawline !~ /\*\/[ \t]*$/ &&		#no trailing */
+		    $rawline =~ /^\+[ \t]*\*/ &&
+		    $realline > 2) {
+			WARN("NONNETWORKING_BLOCK_COMMENT_STYLE",
+			     "non-networking block comments use an empty /* on first line\n" . $hereprev);
+		}
+
 # Block comments use * on subsequent lines
 		if ($prevline =~ /$;[ \t]*$/ &&			#ends in comment
 		    $prevrawline =~ /^\+.*?\/\*/ &&		#starting /*
-- 
2.17.1