[PATCH/RFC 07/14] pmdomain: Make genpd_get_from_provider() public

Geert Uytterhoeven
2026-04-21T18:12:33Z

Unlike the corresponding function in the clock subsystem
(of_clk_get_from_provider()), genpd_get_from_provider() is private, and
thus cannot be used by PM Domain drivers.

Make it public, so it be used by the R-Car X5H Module Controller driver.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
drivers/pmdomain/core.c | 4 ++--
include/linux/pm_domain.h | 7 +++++++
2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/pmdomain/core.c b/drivers/pmdomain/core.c
index 4d32fc676aaf53cf..23c7cd480a7e026d 100644
--- a/drivers/pmdomain/core.c
+++ b/drivers/pmdomain/core.c
@@ -2900,8 +2900,7 @@ EXPORT_SYMBOL_GPL(of_genpd_del_provider);
* Returns a valid pointer to struct generic_pm_domain on success or ERR_PTR()
* on failure.
*/
-static struct generic_pm_domain *genpd_get_from_provider(
- const struct of_phandle_args *genpdspec)
+struct generic_pm_domain *genpd_get_from_provider(const struct of_phandle_args *genpdspec)
{
struct generic_pm_domain *genpd = ERR_PTR(-ENOENT);
struct of_genpd_provider *provider;
@@ -2923,6 +2922,7 @@ static struct generic_pm_domain *genpd_get_from_provider(

return genpd;
}
+EXPORT_SYMBOL_GPL(genpd_get_from_provider);

/**
* of_genpd_add_device() - Add a device to an I/O PM domain
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index b299dc0128d65ee5..568aebf51d830210 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -458,6 +458,7 @@ 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);
+struct generic_pm_domain *genpd_get_from_provider(const struct of_phandle_args *genpdspec);
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);
@@ -488,6 +489,12 @@ 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 struct generic_pm_domain *genpd_get_from_provider(
+ const struct of_phandle_args *genpdspec)
+{
+ return ERR_PTR(-ENODEV);
+}
+
static inline int of_genpd_add_device(const struct of_phandle_args *args,
struct device *dev)
{
--
2.43.0