This is a note to let you know that I've just added the patch titled
Documentation: dmaengine: Correctly describe dmatest with channel unset
to the 5.16-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
documentation-dmaengine-correctly-describe-dmatest-with-channel-unset.patch
and it can be found in the queue-5.16 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From c61d7b2ef141abf81140756b45860a2306f395a2 Mon Sep 17 00:00:00 2001
From: Daniel Thompson <daniel.thompson@xxxxxxxxxx>
Date: Thu, 18 Nov 2021 10:09:52 +0000
Subject: Documentation: dmaengine: Correctly describe dmatest with channel unset
From: Daniel Thompson <daniel.thompson@xxxxxxxxxx>
commit c61d7b2ef141abf81140756b45860a2306f395a2 upstream.
Currently the documentation states that channels must be configured before
running the dmatest. This has not been true since commit 6b41030fdc79
("dmaengine: dmatest: Restore default for channel"). Fix accordingly.
Fixes: 6b41030fdc79 ("dmaengine: dmatest: Restore default for channel")
Signed-off-by: Daniel Thompson <daniel.thompson@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20211118100952.27268-3-daniel.thompson@xxxxxxxxxx
Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
Documentation/driver-api/dmaengine/dmatest.rst | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/Documentation/driver-api/dmaengine/dmatest.rst
+++ b/Documentation/driver-api/dmaengine/dmatest.rst
@@ -143,13 +143,14 @@ Part 5 - Handling channel allocation
Allocating Channels
-------------------
-Channels are required to be configured prior to starting the test run.
-Attempting to run the test without configuring the channels will fail.
+Channels do not need to be configured prior to starting a test run. Attempting
+to run the test without configuring the channels will result in testing any
+channels that are available.
Example::
% echo 1 > /sys/module/dmatest/parameters/run
- dmatest: Could not start test, no channels configured
+ dmatest: No channels configured, continue with any
Channels are registered using the "channel" parameter. Channels can be requested by their
name, once requested, the channel is registered and a pending thread is added to the test list.
Patches currently in stable-queue which might be from daniel.thompson@xxxxxxxxxx are
queue-5.16/backlight-qcom-wled-validate-enabled-string-indices-.patch
queue-5.16/backlight-qcom-wled-use-cpu_to_le16-macro-to-perform.patch
queue-5.16/backlight-qcom-wled-pass-number-of-elements-to-read-.patch
queue-5.16/backlight-qcom-wled-override-default-length-with-qco.patch
queue-5.16/documentation-dmaengine-correctly-describe-dmatest-with-channel-unset.patch
queue-5.16/backlight-qcom-wled-fix-off-by-one-maximum-with-defa.patch
queue-5.16/backlight-qcom-wled-respect-enabled-strings-in-set_b.patch
