[PATCH] docs: sphinx/requirements: Limit jinja2<3.1

[Akira Yokosawa <akiyks@xxxxxxxxx>]

jinja2 release 3.1.0 (March 24, 2022) broke Sphinx<4.0.
This looks like the result of deprecating Python 3.6.
It has been tested against Sphinx 4.3.0 and later later.

Setting an upper limit of <3.1 to junja2 can unbreak Sphinx<4.0
including Sphinx 2.4.4.

Signed-off-by: Akira Yokosawa <akiyks@xxxxxxxxx>
Cc: Jonathan Corbet <corbet@xxxxxxx>
Cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
Cc: linux-doc@xxxxxxxxxxxxxxx
---
Or we can bump the requirement to Sphinx>=4.0.
Thoughts?

        Thanks Akira
--
 Documentation/sphinx/requirements.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/sphinx/requirements.txt b/Documentation/sphinx/requirements.txt
index 9a35f50798a6..2c573541ab71 100644
--- a/Documentation/sphinx/requirements.txt
+++ b/Documentation/sphinx/requirements.txt
@@ -1,2 +1,4 @@
+# jinja2>=3.1 is not compatible with Sphinx<4.0
+jinja2<3.1
 sphinx_rtd_theme
 Sphinx==2.4.4

base-commit: 9df072c73b9891e44f7f59f3b7c8f852b4485e80
-- 
2.25.1