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Message-ID: <CAPDyKFpAnrhVWnt-qy3ysT1EGgEB7h6UvoSa6w=faQXqyk+nsA@mail.gmail.com>
Date: Tue, 13 Feb 2024 13:33:21 +0100
From: Ulf Hansson <ulf.hansson@...aro.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc: Shawn Guo <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>,
Pengutronix Kernel Team <kernel@...gutronix.de>, Fabio Estevam <festevam@...il.com>,
NXP Linux Team <linux-imx@....com>, Thierry Reding <thierry.reding@...il.com>,
Jonathan Hunter <jonathanh@...dia.com>, Nishanth Menon <nm@...com>, Tero Kristo <kristo@...nel.org>,
Santosh Shilimkar <ssantosh@...nel.org>, Michal Simek <michal.simek@....com>,
"Rafael J. Wysocki" <rafael@...nel.org>, linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-tegra@...r.kernel.org
Subject: Re: [PATCH 2/2] pmdomain: constify of_phandle_args in add device and subdomain
On Thu, 8 Feb 2024 at 21:28, Krzysztof Kozlowski
<krzysztof.kozlowski@...aro.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@...aro.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
>
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