On Fri, Aug 18, 2023 at 7:33 AM Sascha Hauer [off-list ref] wrote:

NULL is returned on purpose. When PINCTRL is disabled NULL becomes a
valid pinctrl cookie which can be passed to the other stub functions.
With this drivers using pinctrl can get through their probe function
without an error when PINCTRL is disabled.

The same approach is taken by the clk and regulator API.

It is correct to test the return value of devm_pinctrl_get() with
IS_ERR(), only the commit message of these patches is a bit inaccurate.

Sascha is spot on, maybe copyedit some of the above
into the commit message and resend?

Yours,
Linus Walleij

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