Re: [PATCH] i2c: mux: demux-pinctrl: Release pinctrl handles on deactivation

[Krzysztof Kozlowski]

On Tue, 03 Nov 2026 08:29:05 +0000, Wentao Liang wrote:
> Each master activation calls devm_pinctrl_get() against the parent I2C
> controller device. Switching or removing the demux only releases the
> adapter reference, so the pinctrl reference and its devres entry persist
> until the parent controller is removed. Repeated switches accumulate
> these entries. Activation failures after obtaining the handle retain it
> too.
> 
> Use pinctrl_get() and keep the handle with the active channel. Release
> it when activation fails or the channel is deactivated, before dropping
> the parent adapter reference and reverting the device-tree changeset.
> Keep the no-pinctrl case working by storing NULL when get returns
> -ENODEV.
> 
> Fixes: 50a5ba876908 ("i2c: mux: demux-pinctrl: add driver")
> Cc: stable@xxxxxxxxxxxxxxx
> Assisted-by: DeepSeek-V4.1-Flash and OpenAI Codex
> Signed-off-by: Wentao Liang <vulab@xxxxxxxxxxx>
> ---
>  drivers/i2c/muxes/i2c-demux-pinctrl.c | 16 +++++++++++++---
>  1 file changed, 13 insertions(+), 3 deletions(-)
> 



Multiple things here:
1. Your team ignored completely previous feedback. Multiple times.

2. You use multiple identities with this email address, thus I doubt that we
   speak with an actual person.

3. Your bot does not even bother running checkpatch, right?

4. Nothing of this was reproduced nor tested.

5. Finally, the same feedback:
You sent multiple independent patches, to multiple independent
subsystems. The amount of these patches clearly suggest this was
AI generated and most likely not tested.

More importantly, you sent all this work without properly organizing
relevant patches into patchsets. This makes reviewing difficult
and might cause multiple reviewers to address the same issue.
Replying to the entire set is impossible and requires handling each
patch independently, instead of applying or discarding the set.
Maintainers also won't see the bigger picture of your work. Quite
worrying.

This is on the verge of hostile patch: bomb us with so many
contributions, we won't be able to handle them in efficient manner,
like responding ONCE to ask you to slow down.  Considering all this
is untested and LLM generated, I have even more doubts whether this
should be considered for review.

Please read kernel documentation BEFORE posting more work. It will
explain you how to identify subsystems, how to organize your work per
subsystem (so a patchset grouping multiple patches with a short cover
letter), how to document the issue discovery method and what was
or was not tested.

Best regards,
Krzysztof