[RFC PATCH 4/8] PM / Domains: Don't expose generic_pm_domain structure

From: Jon Hunter <jonathanh@nvidia.com>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Kevin Hilman <khilman@kernel.org>,
	Ulf Hansson <ulf.hansson@linaro.org>
Cc: Thierry Reding <thierry.reding@gmail.com>,
	Kukjin Kim <kgene@kernel.org>,
	Krzysztof Kozlowski <k.kozlowski@samsung.com>,
	Alexander Aring <alex.aring@gmail.com>,
	Eric Anholt <eric@anholt.net>,
	linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-tegra@vger.kernel.org, Jon Hunter <jonathanh@nvidia.com>
Subject: [RFC PATCH 4/8] PM / Domains: Don't expose generic_pm_domain structure
Date: Fri, 4 Mar 2016 11:23:50 +0000	[thread overview]
Message-ID: <1457090634-14785-5-git-send-email-jonathanh@nvidia.com> (raw)
In-Reply-To: <1457090634-14785-1-git-send-email-jonathanh@nvidia.com>

There should be no need to expose the generic_pm_domain structure and
this eliminates the need to implement reference counting for any external
reference to a PM domain. Therefore, make the functions
pm_genpd_lookup_dev() and of_genpd_get_from_provider() private to the PM
domain core.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
---
 drivers/base/power/domain.c |  5 ++---
 include/linux/pm_domain.h   | 14 --------------
 2 files changed, 2 insertions(+), 17 deletions(-)

diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index b24893499454..c2ba1d6dbad3 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -45,7 +45,7 @@ static DEFINE_MUTEX(gpd_list_lock);
  * and checks that the PM domain pointer is a real generic PM domain.
  * Any failure results in NULL being returned.
  */
-struct generic_pm_domain *pm_genpd_lookup_dev(struct device *dev)
+static struct generic_pm_domain *pm_genpd_lookup_dev(struct device *dev)
 {
 	struct generic_pm_domain *genpd = NULL, *gpd;
 
@@ -1680,7 +1680,7 @@ EXPORT_SYMBOL_GPL(of_genpd_del_provider);
  * Returns a valid pointer to struct generic_pm_domain on success or ERR_PTR()
  * on failure.
  */
-struct generic_pm_domain *of_genpd_get_from_provider(
+static struct generic_pm_domain *of_genpd_get_from_provider(
 					struct of_phandle_args *genpdspec)
 {
 	struct generic_pm_domain *genpd = ERR_PTR(-ENOENT);
@@ -1703,7 +1703,6 @@ struct generic_pm_domain *of_genpd_get_from_provider(
 
 	return genpd;
 }
-EXPORT_SYMBOL_GPL(of_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 2b6ee670b231..510512d5390e 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -119,7 +119,6 @@ static inline struct generic_pm_domain_data *dev_gpd_data(struct device *dev)
 	return to_gpd_data(dev->power.subsys_data->domain_data);
 }
 
-extern struct generic_pm_domain *pm_genpd_lookup_dev(struct device *dev);
 extern int __pm_genpd_add_device(struct generic_pm_domain *genpd,
 				 struct device *dev,
 				 struct gpd_timing_data *td);
@@ -141,10 +140,6 @@ static inline struct generic_pm_domain_data *dev_gpd_data(struct device *dev)
 {
 	return ERR_PTR(-ENOSYS);
 }
-static inline struct generic_pm_domain *pm_genpd_lookup_dev(struct device *dev)
-{
-	return NULL;
-}
 static inline int __pm_genpd_add_device(struct generic_pm_domain *genpd,
 					struct device *dev,
 					struct gpd_timing_data *td)
@@ -201,9 +196,6 @@ typedef struct generic_pm_domain *(*genpd_xlate_t)(struct of_phandle_args *args,
 int __of_genpd_add_provider(struct device_node *np, genpd_xlate_t xlate,
 			void *data);
 void of_genpd_del_provider(struct device_node *np);
-struct generic_pm_domain *of_genpd_get_from_provider(
-			struct of_phandle_args *genpdspec);
-
 struct generic_pm_domain *__of_genpd_xlate_simple(
 					struct of_phandle_args *genpdspec,
 					void *data);
@@ -224,12 +216,6 @@ static inline int __of_genpd_add_provider(struct device_node *np,
 }
 static inline void of_genpd_del_provider(struct device_node *np) {}
 
-static inline struct generic_pm_domain *of_genpd_get_from_provider(
-			struct of_phandle_args *genpdspec)
-{
-	return NULL;
-}
-
 #define __of_genpd_xlate_simple		NULL
 #define __of_genpd_xlate_onecell	NULL
 
-- 
2.1.4

