[PATCH 1/2] pmdomain: constify of_phandle_args in xlate

[Krzysztof Kozlowski]

The xlate callbacks are supposed to translate of_phandle_args to proper
provider without modifying the of_phandle_args.  Make the argument
pointer to const for code safety and readability.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
---
 drivers/pmdomain/core.c                     | 4 ++--
 drivers/pmdomain/imx/scu-pd.c               | 2 +-
 drivers/pmdomain/tegra/powergate-bpmp.c     | 2 +-
 drivers/pmdomain/ti/ti_sci_pm_domains.c     | 2 +-
 drivers/pmdomain/xilinx/zynqmp-pm-domains.c | 2 +-
 include/linux/pm_domain.h                   | 2 +-
 6 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/pmdomain/core.c b/drivers/pmdomain/core.c
index 46331e71108a..ea4b29475206 100644
--- a/drivers/pmdomain/core.c
+++ b/drivers/pmdomain/core.c
@@ -2266,7 +2266,7 @@ static DEFINE_MUTEX(of_genpd_mutex);
  * to be a valid pointer to struct generic_pm_domain.
  */
 static struct generic_pm_domain *genpd_xlate_simple(
-					struct of_phandle_args *genpdspec,
+					const struct of_phandle_args *genpdspec,
 					void *data)
 {
 	return data;
@@ -2283,7 +2283,7 @@ static struct generic_pm_domain *genpd_xlate_simple(
  * the genpd_onecell_data struct when registering the provider.
  */
 static struct generic_pm_domain *genpd_xlate_onecell(
-					struct of_phandle_args *genpdspec,
+					const struct of_phandle_args *genpdspec,
 					void *data)
 {
 	struct genpd_onecell_data *genpd_data = data;
diff --git a/drivers/pmdomain/imx/scu-pd.c b/drivers/pmdomain/imx/scu-pd.c
index 891c1d925a9d..05841b0bf7f3 100644
--- a/drivers/pmdomain/imx/scu-pd.c
+++ b/drivers/pmdomain/imx/scu-pd.c
@@ -393,7 +393,7 @@ static int imx_sc_pd_power_off(struct generic_pm_domain *domain)
 	return imx_sc_pd_power(domain, false);
 }
 
-static struct generic_pm_domain *imx_scu_pd_xlate(struct of_phandle_args *spec,
+static struct generic_pm_domain *imx_scu_pd_xlate(const struct of_phandle_args *spec,
 						  void *data)
 {
 	struct generic_pm_domain *domain = ERR_PTR(-ENOENT);
diff --git a/drivers/pmdomain/tegra/powergate-bpmp.c b/drivers/pmdomain/tegra/powergate-bpmp.c
index 179ed895c279..b0138ca9f851 100644
--- a/drivers/pmdomain/tegra/powergate-bpmp.c
+++ b/drivers/pmdomain/tegra/powergate-bpmp.c
@@ -305,7 +305,7 @@ static void tegra_bpmp_remove_powergates(struct tegra_bpmp *bpmp)
 }
 
 static struct generic_pm_domain *
-tegra_powergate_xlate(struct of_phandle_args *spec, void *data)
+tegra_powergate_xlate(const struct of_phandle_args *spec, void *data)
 {
 	struct generic_pm_domain *domain = ERR_PTR(-ENOENT);
 	struct genpd_onecell_data *genpd = data;
diff --git a/drivers/pmdomain/ti/ti_sci_pm_domains.c b/drivers/pmdomain/ti/ti_sci_pm_domains.c
index c091d569ecd5..9dddf227a3a6 100644
--- a/drivers/pmdomain/ti/ti_sci_pm_domains.c
+++ b/drivers/pmdomain/ti/ti_sci_pm_domains.c
@@ -85,7 +85,7 @@ static int ti_sci_pd_power_on(struct generic_pm_domain *domain)
  * @data: genpd core data for all the powerdomains on the device
  */
 static struct generic_pm_domain *ti_sci_pd_xlate(
-					struct of_phandle_args *genpdspec,
+					const struct of_phandle_args *genpdspec,
 					void *data)
 {
 	struct genpd_onecell_data *genpd_data = data;
diff --git a/drivers/pmdomain/xilinx/zynqmp-pm-domains.c b/drivers/pmdomain/xilinx/zynqmp-pm-domains.c
index 6fd514286d82..0b5831e5ba1b 100644
--- a/drivers/pmdomain/xilinx/zynqmp-pm-domains.c
+++ b/drivers/pmdomain/xilinx/zynqmp-pm-domains.c
@@ -210,7 +210,7 @@ static void zynqmp_gpd_detach_dev(struct generic_pm_domain *domain,
 }
 
 static struct generic_pm_domain *zynqmp_gpd_xlate
-				(struct of_phandle_args *genpdspec, void *data)
+				(const struct of_phandle_args *genpdspec, void *data)
 {
 	struct genpd_onecell_data *genpd_data = data;
 	unsigned int i, idx = genpdspec->args[0];
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index fb91770ba4ba..1a391ef1b6f8 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -349,7 +349,7 @@ static inline void dev_pm_genpd_resume(struct device *dev) {}
 /* OF PM domain providers */
 struct of_device_id;
 
-typedef struct generic_pm_domain *(*genpd_xlate_t)(struct of_phandle_args *args,
+typedef struct generic_pm_domain *(*genpd_xlate_t)(const struct of_phandle_args *args,
 						   void *data);
 
 struct genpd_onecell_data {
-- 
2.34.1