Re: [PATCH 04/10] PM / Domains: Don't expose generic_pm_domain structure to clients
From: Ulf Hansson <hidden>
Date: 2016-09-08 11:35:47
Also in:
linux-arm-kernel, linux-tegra
On 16 August 2016 at 11:49, Jon Hunter [off-list ref] wrote:
There should be no need to expose the generic_pm_domain structure to clients 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. The functions are renamed in accordance with the naming conventions for genpd static functions. Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Ulf Hansson <redacted> Kind regards Uffe
quoted hunk ↗ jump to hunk
--- drivers/base/power/domain.c | 19 +++++++++---------- include/linux/pm_domain.h | 14 -------------- 2 files changed, 9 insertions(+), 24 deletions(-)diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 43c2a959a7bf..7b0aecef2e51 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 *genpd_lookup_dev(struct device *dev) { struct generic_pm_domain *genpd = NULL, *gpd;@@ -1119,7 +1119,7 @@ int pm_genpd_remove_device(struct generic_pm_domain *genpd, dev_dbg(dev, "%s()\n", __func__); - if (!genpd || genpd != pm_genpd_lookup_dev(dev)) + if (!genpd || genpd != genpd_lookup_dev(dev)) return -EINVAL; /* The above validation also means we have existing domain_data. */@@ -1466,7 +1466,7 @@ void of_genpd_del_provider(struct device_node *np) EXPORT_SYMBOL_GPL(of_genpd_del_provider); /** - * of_genpd_get_from_provider() - Look-up PM domain + * genpd_get_from_provider() - Look-up PM domain * @genpdspec: OF phandle args to use for look-up * * Looks for a PM domain provider under the node specified by @genpdspec and if@@ -1476,7 +1476,7 @@ 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 *genpd_get_from_provider( struct of_phandle_args *genpdspec) { struct generic_pm_domain *genpd = ERR_PTR(-ENOENT);@@ -1499,7 +1499,6 @@ 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@@ -1513,7 +1512,7 @@ int of_genpd_add_device(struct of_phandle_args *genpdspec, struct device *dev) { struct generic_pm_domain *genpd; - genpd = of_genpd_get_from_provider(genpdspec); + genpd = genpd_get_from_provider(genpdspec); if (IS_ERR(genpd)) return PTR_ERR(genpd);@@ -1535,11 +1534,11 @@ int of_genpd_add_subdomain(struct of_phandle_args *parent_spec, { struct generic_pm_domain *parent, *subdomain; - parent = of_genpd_get_from_provider(parent_spec); + parent = genpd_get_from_provider(parent_spec); if (IS_ERR(parent)) return PTR_ERR(parent); - subdomain = of_genpd_get_from_provider(subdomain_spec); + subdomain = genpd_get_from_provider(subdomain_spec); if (IS_ERR(subdomain)) return PTR_ERR(subdomain);@@ -1561,7 +1560,7 @@ static void genpd_dev_pm_detach(struct device *dev, bool power_off) unsigned int i; int ret = 0; - pd = pm_genpd_lookup_dev(dev); + pd = genpd_lookup_dev(dev); if (!pd) return;@@ -1642,7 +1641,7 @@ int genpd_dev_pm_attach(struct device *dev) return -ENOENT; } - pd = of_genpd_get_from_provider(&pd_args); + pd = genpd_get_from_provider(&pd_args); of_node_put(pd_args.np); if (IS_ERR(pd)) { dev_dbg(dev, "%s() failed to find PM domain: %ld\n",diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index e1964a242389..bd411e754f4a 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h@@ -116,7 +116,6 @@ 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);@@ -138,10 +137,6 @@ 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)@@ -199,9 +194,6 @@ 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);@@ -222,12 +214,6 @@ 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