[PATCH v2 2/2] docs: stable-kernel-rules: remind reader about DCO

[Shung-Hsi Yu <shung-hsi.yu@suse.com>]

When sending patch authored by someone else to stable, it is quite easy for the
sender to forget adding the Developer's Certification of Origin (DCO, i.e.
Signed-off-by). An example of such can be seen in the link below. Mention DCO
explicitly so senders are less likely to forget to do so and cause another
round-trip.

Add a label in submitting-patches.rst so we can directly link to the DCO
section.

Link: https://lore.kernel.org/stable/2024051500-underage-unfixed-5d28@gregkh/
Signed-off-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
---
Change from v1:
- explicitly refer to the link as an example in the 1st paragraph (Paul)
- commit message typo fix s/explicilty/explicitly/ (Paul)
---
 Documentation/process/stable-kernel-rules.rst | 4 ++++
 Documentation/process/submitting-patches.rst  | 1 +
 2 files changed, 5 insertions(+)

diff --git a/Documentation/process/stable-kernel-rules.rst b/Documentation/process/stable-kernel-rules.rst
index d22aa2280f6e..85a91fd40da9 100644
--- a/Documentation/process/stable-kernel-rules.rst
+++ b/Documentation/process/stable-kernel-rules.rst
@@ -168,6 +168,10 @@ If the submitted patch deviates from the original upstream patch (for example
 because it had to be adjusted for the older API), this must be very clearly
 documented and justified in the patch description.
 
+Be sure to also include a :ref:`Developer's Certificate of Origin
+<sign_your_work>` (i.e. ``Signed-off-by``) when sending patches that you did
+not author yourself.
+
 
 Following the submission
 ------------------------
diff --git a/Documentation/process/submitting-patches.rst b/Documentation/process/submitting-patches.rst
index 66029999b587..98f1c8d8b429 100644
--- a/Documentation/process/submitting-patches.rst
+++ b/Documentation/process/submitting-patches.rst
@@ -394,6 +394,7 @@ e-mail discussions.
 
 ``git send-email`` will do this for you automatically.
 
+.. _sign_your_work:
 
 Sign your work - the Developer's Certificate of Origin
 ------------------------------------------------------
-- 
2.45.2