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pmdomain: core: constify of_phandle_args in add device and subdomain

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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>
Link: https://lore.kernel.org/r/20240208202822.631449-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Krzysztof Kozlowski 2024-02-08 21:28:22 +01:00 committed by Ulf Hansson
parent 4d0824608a
commit 4af6bc163c
2 changed files with 16 additions and 16 deletions
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12
drivers/pmdomain/core.c
View File

@ -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;

20
include/linux/pm_domain.h
View File

@ -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;
}