From fc387a0704cc86cf47de0e64236577af3e148ec2 Mon Sep 17 00:00:00 2001
From: Onur Özkan <work@onurozkan.dev>
Date: Wed, 17 Sep 2025 20:37:24 +0300
Subject: checkpatch: detect unhandled placeholders in cover letters
MIME-Version: 1.0
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Content-Transfer-Encoding: 8bit

Add a new check PLACEHOLDER_USE to detect unhandled placeholders.  This
prevents sending patch series with incomplete patches (mostly in cover
letters) containing auto generated subject or blurb lines.

These placeholders can be seen on mailing lists.  With this change,
checkpatch will emit an error when such text is found.

Link: https://lkml.kernel.org/r/20250917173725.22547-2-work@onurozkan.dev
Signed-off-by: Onur Özkan <work@onurozkan.dev>
Acked-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Dwaipayan Ray <dwaipayanray1@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
 scripts/checkpatch.pl | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'scripts/checkpatch.pl')

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 92669904eecc..6729f18e5654 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3345,6 +3345,13 @@ sub process {
 			}
 		}
 
+# Check for auto-generated unhandled placeholder text (mostly for cover letters)
+		if (($in_commit_log || $in_header_lines) &&
+		    $rawline =~ /(?:SUBJECT|BLURB) HERE/) {
+			ERROR("PLACEHOLDER_USE",
+			      "Placeholder text detected\n" . $herecurr);
+		}
+
 # Check for git id commit length and improperly formed commit descriptions
 # A correctly formed commit description is:
 #    commit <SHA-1 hash length 12+ chars> ("Complete commit subject")
-- 
cgit 


From 464c7ea5c3ffa333a2c1a8dfd68b157ced1edc5a Mon Sep 17 00:00:00 2001
From: Carlos López <clopez@suse.de>
Date: Fri, 31 Oct 2025 12:19:09 +0100
Subject: checkpatch: add IDR to the deprecated list
MIME-Version: 1.0
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As of commit 85656ec193e9, the IDR interface is marked as deprecated in
the documentation, but no checks are made in that regard for new code.
Add the existing IDR initialization APIs to the deprecated list in
checkpatch, so that if new code is introduced using these APIs, a warning
is emitted.

Link: https://lkml.kernel.org/r/20251031111908.2266077-2-clopez@suse.de
Signed-off-by: Carlos López <clopez@suse.de>
Suggested-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Dwaipayan Ray <dwaipayanray1@gmail.com>
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
 scripts/checkpatch.pl | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'scripts/checkpatch.pl')

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 6729f18e5654..d58ca9655ab7 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -860,6 +860,10 @@ our %deprecated_apis = (
 	"kunmap"				=> "kunmap_local",
 	"kmap_atomic"				=> "kmap_local_page",
 	"kunmap_atomic"				=> "kunmap_local",
+	#These should be enough to drive away new IDR users
+	"DEFINE_IDR"				=> "DEFINE_XARRAY",
+	"idr_init"				=> "xa_init",
+	"idr_init_base"				=> "xa_init_flags"
 );
 
 #Create a search pattern for all these strings to speed up a loop below
-- 
cgit