Re: [PATCH v4 7/7] clk: tests: Add Kunit testing for nexus nodes

[Brian Masney]

On Fri, Jul 17, 2026 at 05:59:23PM +0200, Miquel Raynal (Schneider Electric) wrote:
> Add a nexus node with a child requesting a mapped clock in the fake DT
> overlay to verify that the parsing is also correctly working.
> 
> Create an of_find_node_by_name() like kunit helper to garbage collect the
> node automatically in case of failed assertion.
> 
> Suggested-by: Stephen Boyd <sboyd@xxxxxxxxxx>
> Signed-off-by: Miquel Raynal (Schneider Electric) <miquel.raynal@xxxxxxxxxxx>
> ---
>  drivers/clk/clk_kunit_helpers.c          | 31 +++++++++++++++++++++++++++++++
>  drivers/clk/clk_test.c                   | 15 +++++++++++++++
>  drivers/clk/kunit_clk_parse_clkspec.dtso | 10 ++++++++++
>  include/kunit/clk.h                      |  2 ++
>  4 files changed, 58 insertions(+)
> 
> diff --git a/drivers/clk/clk_kunit_helpers.c b/drivers/clk/clk_kunit_helpers.c
> index 68a28e70bb61..daaf1cf1546c 100644
> --- a/drivers/clk/clk_kunit_helpers.c
> +++ b/drivers/clk/clk_kunit_helpers.c
> @@ -233,5 +233,36 @@ int of_clk_add_hw_provider_kunit(struct kunit *test, struct device_node *np,
>  }
>  EXPORT_SYMBOL_GPL(of_clk_add_hw_provider_kunit);
>  
> +KUNIT_DEFINE_ACTION_WRAPPER(of_node_put_wrapper, of_node_put, struct device_node *);
> +
> +/**
> + * of_find_node_by_name_kunit() - Test managed of_find_node_by_name()
> + * @test: The test context
> + * @from: Parent device node to start searching from, or NULL to search from root
> + * @name: The name string to match against
> + *
> + * Just like of_find_node_by_name(), except the device_noded is managed by
> + * the test case and is automatically put after the test case concludes.
> + *
> + * Return: the device_node on success, NULL if not found, or a negative errno value on failure.
> + */
> +struct device_node *of_find_node_by_name_kunit(struct kunit *test, struct device_node *from,
> +					       const char *name)
> +{
> +	struct device_node *np;
> +	int ret;
> +
> +	np = of_find_node_by_name(from, name);
> +	if (!np)
> +		return NULL;
> +
> +	ret = kunit_add_action_or_reset(test, of_node_put_wrapper, np);
> +	if (ret)
> +		return ERR_PTR(ret);
> +
> +	return np;
> +}
> +EXPORT_SYMBOL_GPL(of_find_node_by_name_kunit);

Should this be prefixed with clk_ since this is in clk_kunit_helpers.c?

Other than this, the whole series looks reasonable to me. I'm curious
though to get Stephen's feedback about this series.

Brian