linux-kernel - [PATCH v3 2/2] checkpatch: warn on empty rust doc comments

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Message-ID: <7877d23adba22e2f89a61efc129ecf1b0627510b.1726072795.git.hridesh699@gmail.com>
Date: Sat, 14 Sep 2024 20:54:29 +0530
From: Hridesh MG <hridesh699@...il.com>
To: linux-kernel@...r.kernel.org,
	rust-for-linux@...r.kernel.org
Cc: Hridesh MG <hridesh699@...il.com>,
	Andy Whitcroft <apw@...onical.com>,
	Joe Perches <joe@...ches.com>,
	Dwaipayan Ray <dwaipayanray1@...il.com>,
	Lukas Bulwahn <lukas.bulwahn@...il.com>,
	Miguel Ojeda <ojeda@...nel.org>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Wedson Almeida Filho <wedsonaf@...il.com>,
	Boqun Feng <boqun.feng@...il.com>,
	Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <benno.lossin@...ton.me>,
	Andreas Hindborg <a.hindborg@...sung.com>,
	Alice Ryhl <aliceryhl@...gle.com>,
	Trevor Gross <tmgross@...ch.edu>,
	Shuah Khan <skhan@...uxfoundation.org>
Subject: [PATCH v3 2/2] checkpatch: warn on empty rust doc comments

Add a check to warn if there are consecutive empty `///` lines in rust
files.

Suggested-by: Miguel Ojeda <ojeda@...nel.org>
Link: https://github.com/Rust-for-Linux/linux/issues/1109
Signed-off-by: Hridesh MG <hridesh699@...il.com>
---
No changes in v2, this is a new patch
No changes in v3
---
 scripts/checkpatch.pl | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 39032224d504..c75bc3927bf6 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3884,6 +3884,13 @@ sub process {
 			}
 		}
 
+# check for consecutive empty /// lines in .rs files
+		if ($realfile =~ /\.rs$/ &&
+		    $rawline =~ /^\+\s*\/\/\/$/ && $prevrawline =~ /^\+\s*\/\/\/$/) {
+			WARN("RUST_DOC_EMPTY",
+			     "avoid using consecutive empty rustdoc comments\n" . $herecurr);
+		}
+
 # check for adding lines without a newline.
 		if ($line =~ /^\+/ && defined $lines[$linenr] && $lines[$linenr] =~ /^\\ No newline at end of file/) {
 			if (WARN("MISSING_EOF_NEWLINE",
-- 
2.46.0