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References: <20240208202822.631449-1-krzysztof.kozlowski@linaro.org> <20240208202822.631449-2-krzysztof.kozlowski@linaro.org>
In-Reply-To: <20240208202822.631449-2-krzysztof.kozlowski@linaro.org>
From: Ulf Hansson <ulf.hansson@linaro.org>
Date: Tue, 13 Feb 2024 13:33:21 +0100
Message-ID: <CAPDyKFpAnrhVWnt-qy3ysT1EGgEB7h6UvoSa6w=faQXqyk+nsA@mail.gmail.com>
Subject: Re: [PATCH 2/2] pmdomain: constify of_phandle_args in add device and subdomain
To: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Cc: Shawn Guo <shawnguo@kernel.org>, Sascha Hauer <s.hauer@pengutronix.de>, 
	Pengutronix Kernel Team <kernel@pengutronix.de>, Fabio Estevam <festevam@gmail.com>, 
	NXP Linux Team <linux-imx@nxp.com>, Thierry Reding <thierry.reding@gmail.com>, 
	Jonathan Hunter <jonathanh@nvidia.com>, Nishanth Menon <nm@ti.com>, Tero Kristo <kristo@kernel.org>, 
	Santosh Shilimkar <ssantosh@kernel.org>, Michal Simek <michal.simek@amd.com>, 
	"Rafael J. Wysocki" <rafael@kernel.org>, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, 
	linux-arm-kernel@lists.infradead.org, linux-tegra@vger.kernel.org
Content-Type: text/plain; charset="UTF-8"

On Thu, 8 Feb 2024 at 21:28, Krzysztof Kozlowski
<krzysztof.kozlowski@linaro.org> wrote:
>
> Pointer to of_phandle_args is not modified by of_genpd_add_device() and
> of_genpd_add_subdomain(), so it can be made pointer to const for code
> safety and readability.
>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Applied for next, thanks!

Kind regards
Uffe


> ---
>  drivers/pmdomain/core.c   | 12 ++++++------
>  include/linux/pm_domain.h | 20 ++++++++++----------
>  2 files changed, 16 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/pmdomain/core.c b/drivers/pmdomain/core.c
> index ea4b29475206..4215ffd9b11c 100644
> --- a/drivers/pmdomain/core.c
> +++ b/drivers/pmdomain/core.c
> @@ -2526,7 +2526,7 @@ EXPORT_SYMBOL_GPL(of_genpd_del_provider);
>   * on failure.
>   */
>  static struct generic_pm_domain *genpd_get_from_provider(
> -                                       struct of_phandle_args *genpdspec)
> +                                       const struct of_phandle_args *genpdspec)
>  {
>         struct generic_pm_domain *genpd = ERR_PTR(-ENOENT);
>         struct of_genpd_provider *provider;
> @@ -2557,7 +2557,7 @@ static struct generic_pm_domain *genpd_get_from_provider(
>   * Looks-up an I/O PM domain based upon phandle args provided and adds
>   * the device to the PM domain. Returns a negative error code on failure.
>   */
> -int of_genpd_add_device(struct of_phandle_args *genpdspec, struct device *dev)
> +int of_genpd_add_device(const struct of_phandle_args *genpdspec, struct device *dev)
>  {
>         struct generic_pm_domain *genpd;
>         int ret;
> @@ -2591,8 +2591,8 @@ EXPORT_SYMBOL_GPL(of_genpd_add_device);
>   * provided and adds the subdomain to the parent PM domain. Returns a
>   * negative error code on failure.
>   */
> -int of_genpd_add_subdomain(struct of_phandle_args *parent_spec,
> -                          struct of_phandle_args *subdomain_spec)
> +int of_genpd_add_subdomain(const struct of_phandle_args *parent_spec,
> +                          const struct of_phandle_args *subdomain_spec)
>  {
>         struct generic_pm_domain *parent, *subdomain;
>         int ret;
> @@ -2629,8 +2629,8 @@ EXPORT_SYMBOL_GPL(of_genpd_add_subdomain);
>   * provided and removes the subdomain from the parent PM domain. Returns a
>   * negative error code on failure.
>   */
> -int of_genpd_remove_subdomain(struct of_phandle_args *parent_spec,
> -                             struct of_phandle_args *subdomain_spec)
> +int of_genpd_remove_subdomain(const struct of_phandle_args *parent_spec,
> +                             const struct of_phandle_args *subdomain_spec)
>  {
>         struct generic_pm_domain *parent, *subdomain;
>         int ret;
> diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
> index 1a391ef1b6f8..772d3280d35f 100644
> --- a/include/linux/pm_domain.h
> +++ b/include/linux/pm_domain.h
> @@ -364,11 +364,11 @@ int of_genpd_add_provider_simple(struct device_node *np,
>  int of_genpd_add_provider_onecell(struct device_node *np,
>                                   struct genpd_onecell_data *data);
>  void of_genpd_del_provider(struct device_node *np);
> -int of_genpd_add_device(struct of_phandle_args *args, struct device *dev);
> -int of_genpd_add_subdomain(struct of_phandle_args *parent_spec,
> -                          struct of_phandle_args *subdomain_spec);
> -int of_genpd_remove_subdomain(struct of_phandle_args *parent_spec,
> -                             struct of_phandle_args *subdomain_spec);
> +int of_genpd_add_device(const struct of_phandle_args *args, struct device *dev);
> +int of_genpd_add_subdomain(const struct of_phandle_args *parent_spec,
> +                          const struct of_phandle_args *subdomain_spec);
> +int of_genpd_remove_subdomain(const struct of_phandle_args *parent_spec,
> +                             const struct of_phandle_args *subdomain_spec);
>  struct generic_pm_domain *of_genpd_remove_last(struct device_node *np);
>  int of_genpd_parse_idle_states(struct device_node *dn,
>                                struct genpd_power_state **states, int *n);
> @@ -393,20 +393,20 @@ static inline int of_genpd_add_provider_onecell(struct device_node *np,
>
>  static inline void of_genpd_del_provider(struct device_node *np) {}
>
> -static inline int of_genpd_add_device(struct of_phandle_args *args,
> +static inline int of_genpd_add_device(const struct of_phandle_args *args,
>                                       struct device *dev)
>  {
>         return -ENODEV;
>  }
>
> -static inline int of_genpd_add_subdomain(struct of_phandle_args *parent_spec,
> -                                        struct of_phandle_args *subdomain_spec)
> +static inline int of_genpd_add_subdomain(const struct of_phandle_args *parent_spec,
> +                                        const struct of_phandle_args *subdomain_spec)
>  {
>         return -ENODEV;
>  }
>
> -static inline int of_genpd_remove_subdomain(struct of_phandle_args *parent_spec,
> -                                       struct of_phandle_args *subdomain_spec)
> +static inline int of_genpd_remove_subdomain(const struct of_phandle_args *parent_spec,
> +                                           const struct of_phandle_args *subdomain_spec)
>  {
>         return -ENODEV;
>  }
> --
> 2.34.1
>