1 files changed, 19 insertions, 7 deletions

diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index f9ec1736a116..65633e5a2bc0 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -13,6 +13,7 @@
 
 enum gpd_status {
         GPD_STATE_ACTIVE = 0,   /* PM domain is active */
+        GPD_STATE_WAIT_MASTER,  /* PM domain's master is being waited for */
         GPD_STATE_BUSY,         /* Something is happening to the PM domain */
         GPD_STATE_REPEAT,       /* Power off in progress, to be repeated */
         GPD_STATE_POWER_OFF,    /* PM domain is off */
@@ -25,15 +26,14 @@ struct dev_power_governor {
 struct generic_pm_domain {
         struct dev_pm_domain domain;    /* PM domain operations */
         struct list_head gpd_list_node; /* Node in the global PM domains list */
-        struct list_head sd_node;       /* Node in the parent's subdomain list */
-        struct generic_pm_domain *parent;       /* Parent PM domain */
-        struct list_head sd_list;       /* List of dubdomains */
+        struct list_head master_links;  /* Links with PM domain as a master */
+        struct list_head slave_links;   /* Links with PM domain as a slave */
         struct list_head dev_list;      /* List of devices */
         struct mutex lock;
         struct dev_power_governor *gov;
         struct work_struct power_off_work;
         unsigned int in_progress;       /* Number of devices being suspended now */
-        unsigned int sd_count;  /* Number of subdomains with power "on" */
+        atomic_t sd_count;      /* Number of subdomains with power "on" */
         enum gpd_status status; /* Current state of the domain */
         wait_queue_head_t status_wait_queue;
         struct task_struct *poweroff_task;      /* Powering off task */
@@ -42,6 +42,7 @@ struct generic_pm_domain {
         unsigned int suspended_count;   /* System suspend device counter */
         unsigned int prepared_count;    /* Suspend counter of prepared devices */
         bool suspend_power_off; /* Power status before system suspend */
+        bool dev_irq_safe;      /* Device callbacks are IRQ-safe */
         int (*power_off)(struct generic_pm_domain *domain);
         int (*power_on)(struct generic_pm_domain *domain);
         int (*start_device)(struct device *dev);
@@ -54,12 +55,23 @@ static inline struct generic_pm_domain *pd_to_genpd(struct dev_pm_domain *pd)
         return container_of(pd, struct generic_pm_domain, domain);
 }
 
-struct dev_list_entry {
-        struct list_head node;
-        struct device *dev;
+struct gpd_link {
+        struct generic_pm_domain *master;
+        struct list_head master_node;
+        struct generic_pm_domain *slave;
+        struct list_head slave_node;
+};
+
+struct generic_pm_domain_data {
+        struct pm_domain_data base;
         bool need_restore;
 };
 
+static inline struct generic_pm_domain_data *to_gpd_data(struct pm_domain_data *pdd)
+{
+        return container_of(pdd, struct generic_pm_domain_data, base);
+}
+
 #ifdef CONFIG_PM_GENERIC_DOMAINS
 extern int pm_genpd_add_device(struct generic_pm_domain *genpd,
                                struct device *dev);