PM / Domains: Move syscore flag from subsys data to struct device

The syscore device PM flag is used to mark the devices (belonging to
a PM domain) that should never be turned off, except for the system
core (syscore) suspend/hibernation and resume stages.  That flag is
stored in the device's struct pm_subsys_data object whose address is
available from struct device.  However, in some situations it may be
convenient to set that flag before the device is added to a PM
domain, so it is better to move it directly to the "power" member of
struct device.  Then, it can be checked by the routines in
drivers/base/power/runtime.c and drivers/base/power/main.c, which is
more straightforward.

This also reduces the number of dev_gpd_data() invocations in the
generic PM domains framework, so the overhead related to the syscore
flag is slightly smaller.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Magnus Damm <damm@opensource.se>

1 files changed, 0 insertions, 3 deletions

diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index dab0938603fa..08adf8e5a80e 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -114,7 +114,6 @@ struct generic_pm_domain_data {
         struct mutex lock;
         unsigned int refcount;
         bool need_restore;
-        bool syscore;
 };
 
 #ifdef CONFIG_PM_GENERIC_DOMAINS
@@ -153,7 +152,6 @@ static inline int pm_genpd_of_add_device(struct device_node *genpd_node,
 
 extern int pm_genpd_remove_device(struct generic_pm_domain *genpd,
                                   struct device *dev);
-extern void pm_genpd_dev_syscore(struct device *dev, bool val);
 extern void pm_genpd_dev_need_restore(struct device *dev, bool val);
 extern int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
                                   struct generic_pm_domain *new_subdomain);
@@ -199,7 +197,6 @@ static inline int pm_genpd_remove_device(struct generic_pm_domain *genpd,
 {
         return -ENOSYS;
 }
-static inline void pm_genpd_dev_syscore(struct device *dev, bool val) {}
 static inline void pm_genpd_dev_need_restore(struct device *dev, bool val) {}
 static inline int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
                                          struct generic_pm_domain *new_sd)