--- /dev/null
+From d1db4118489fffd2b2f612140b7acbb477880839 Mon Sep 17 00:00:00 2001
+From: Sasha Levin <sashal@kernel.org>
+Date: Wed, 11 Mar 2026 17:58:17 -0400
+Subject: checkpatch: add support for Assisted-by tag
+
+From: Sasha Levin <sashal@kernel.org>
+
+commit d1db4118489fffd2b2f612140b7acbb477880839 upstream.
+
+The Assisted-by tag was introduced in
+Documentation/process/coding-assistants.rst for attributing AI tool
+contributions to kernel patches. However, checkpatch.pl did not recognize
+this tag, causing two issues:
+
+ WARNING: Non-standard signature: Assisted-by:
+ ERROR: Unrecognized email address: 'AGENT_NAME:MODEL_VERSION'
+
+Fix this by:
+1. Adding Assisted-by to the recognized $signature_tags list
+2. Skipping email validation for Assisted-by lines since they use the
+ AGENT_NAME:MODEL_VERSION format instead of an email address
+3. Warning when the Assisted-by value doesn't match the expected format
+
+Link: https://lkml.kernel.org/r/20260311215818.518930-1-sashal@kernel.org
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+Reported-by: Bart Van Assche <bvanassche@acm.org>
+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>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ scripts/checkpatch.pl | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+--- a/scripts/checkpatch.pl
++++ b/scripts/checkpatch.pl
+@@ -622,6 +622,7 @@ our $signature_tags = qr{(?xi:
+ Reviewed-by:|
+ Reported-by:|
+ Suggested-by:|
++ Assisted-by:|
+ To:|
+ Cc:
+ )};
+@@ -3070,6 +3071,15 @@ sub process {
+ }
+ }
+
++ # Assisted-by uses AGENT_NAME:MODEL_VERSION format, not email
++ if ($sign_off =~ /^Assisted-by:/i) {
++ if ($email !~ /^\S+:\S+/) {
++ WARN("BAD_SIGN_OFF",
++ "Assisted-by expects 'AGENT_NAME:MODEL_VERSION [TOOL1] [TOOL2]' format\n" . $herecurr);
++ }
++ next;
++ }
++
+ my ($email_name, $name_comment, $email_address, $comment) = parse_email($email);
+ my $suggested_email = format_email(($email_name, $name_comment, $email_address, $comment));
+ if ($suggested_email eq "") {