litmus-rt.git - The LITMUS^RT kernel.

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author	Christoph Hellwig <hch@infradead.org>	2008-08-13 02:49:57 -0400
committer	Lachlan McIlroy <lachlan@redback.melbourne.sgi.com>	2008-08-13 02:49:57 -0400
commit	41b5c2e77a0221cf07ac127afa122add67ac5418 (patch)
tree	7ba8db919624d68c5db2b2dd022d4742cc9ea104 /drivers/usb/class
parent	4249023a5d14f28d4e68ba15d24d25c0e5be71a6 (diff)

[XFS] xfs_unmountfs should return void

xfs_unmounts can't and shouldn't return errors so declare it as returning void. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31833a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>

Diffstat (limited to 'drivers/usb/class')

0 files changed, 0 insertions, 0 deletions

/* * pm_domain.h - Definitions and headers related to device power domains. * * Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp. * * This file is released under the GPLv2. */ #ifndef _LINUX_PM_DOMAIN_H #define _LINUX_PM_DOMAIN_H #include <linux/device.h> #include <linux/mutex.h> #include <linux/pm.h> #include <linux/err.h> #include <linux/of.h> #include <linux/notifier.h> #include <linux/cpuidle.h> 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 */ }; struct dev_power_governor { bool (*power_down_ok)(struct dev_pm_domain *domain); bool (*stop_ok)(struct device *dev); }; struct gpd_dev_ops { int (*start)(struct device *dev); int (*stop)(struct device *dev); int (*save_state)(struct device *dev); int (*restore_state)(struct device *dev); int (*suspend)(struct device *dev); int (*suspend_late)(struct device *dev); int (*resume_early)(struct device *dev); int (*resume)(struct device *dev); int (*freeze)(struct device *dev); int (*freeze_late)(struct device *dev); int (*thaw_early)(struct device *dev); int (*thaw)(struct device *dev); bool (*active_wakeup)(struct device *dev); }; struct gpd_cpu_data { unsigned int saved_exit_latency; struct cpuidle_state *idle_state; }; 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 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; char *name; unsigned int in_progress; /* Number of devices being suspended now */ 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 */ unsigned int resume_count; /* Number of devices being resumed */ unsigned int device_count; /* Number of devices */ 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); s64 power_off_latency_ns; int (*power_on)(struct generic_pm_domain *domain); s64 power_on_latency_ns; struct gpd_dev_ops dev_ops; s64 max_off_time_ns; /* Maximum allowed "suspended" time. */ bool max_off_time_changed; bool cached_power_down_ok; struct device_node *of_node; /* Node in device tree */ struct gpd_cpu_data *cpu_data; }; static inline struct generic_pm_domain *pd_to_genpd(struct dev_pm_domain *pd) { return container_of(pd, struct generic_pm_domain, domain); } struct gpd_link { struct generic_pm_domain *master; struct list_head master_node; struct generic_pm_domain *slave; struct list_head slave_node; }; struct gpd_timing_data { s64 stop_latency_ns; s64 start_latency_ns; s64 save_state_latency_ns; s64 restore_state_latency_ns; s64 effective_constraint_ns; bool constraint_changed; bool cached_stop_ok; }; struct generic_pm_domain_data { struct pm_domain_data base; struct gpd_dev_ops ops; struct gpd_timing_data td; struct notifier_block nb; struct mutex lock; unsigned int refcount; bool need_restore; }; #ifdef CONFIG_PM_GENERIC_DOMAINS 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); } 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 dev_power_governor simple_qos_governor; extern struct generic_pm_domain *dev_to_genpd(struct device *dev); extern int __pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev, struct gpd_timing_data *td); extern int __pm_genpd_of_add_device(struct device_node *genpd_node, struct device *dev, struct gpd_timing_data *td); extern int __pm_genpd_name_add_device(const char *domain_name, struct device *dev, struct gpd_timing_data *td); extern int pm_genpd_remove_device(struct generic_pm_domain *genpd, struct device *dev); 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); extern int pm_genpd_add_subdomain_names(const char *master_name, const char *subdomain_name); extern int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd, struct generic_pm_domain *target); extern int pm_genpd_add_callbacks(struct device *dev, struct gpd_dev_ops *ops, struct gpd_timing_data *td); extern int __pm_genpd_remove_callbacks(struct device *dev, bool clear_td); extern int pm_genpd_attach_cpuidle(struct generic_pm_domain *genpd, int state); extern int pm_genpd_name_attach_cpuidle(const char *name, int state); extern int pm_genpd_detach_cpuidle(struct generic_pm_domain *genpd); extern int pm_genpd_name_detach_cpuidle(const char *name); extern void pm_genpd_init(struct generic_pm_domain *genpd, struct dev_power_governor *gov, bool is_off); extern int pm_genpd_poweron(struct generic_pm_domain *genpd); extern int pm_genpd_name_poweron(const char *domain_name); extern bool default_stop_ok(struct device *dev); extern struct dev_power_governor pm_domain_always_on_gov; #else static inline struct generic_pm_domain_data *dev_gpd_data(struct device *dev) { return ERR_PTR(-ENOSYS); } static inline struct generic_pm_domain *dev_to_genpd(struct device *dev) { return ERR_PTR(-ENOSYS); } static inline int __pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev, struct gpd_timing_data *td) { return -ENOSYS; } static inline int __pm_genpd_of_add_device(struct device_node *genpd_node, struct device *dev, struct gpd_timing_data *td) { return -ENOSYS; } static inline int __pm_genpd_name_add_device(const char *domain_name, struct device *dev, struct gpd_timing_data *td) { return -ENOSYS; } static inline int pm_genpd_remove_device(struct generic_pm_domain *genpd, struct device *dev) { return -ENOSYS; } 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) { return -ENOSYS; } static inline int pm_genpd_add_subdomain_names(const char *master_name, const char *subdomain_name) { return -ENOSYS; } static inline int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd, struct generic_pm_domain *target) { return -ENOSYS; } static inline int pm_genpd_add_callbacks(struct device *dev, struct gpd_dev_ops *ops, struct gpd_timing_data *td) { return -ENOSYS; } static inline int __pm_genpd_remove_callbacks(struct device *dev, bool clear_td) { return -ENOSYS; } static inline int pm_genpd_attach_cpuidle(struct generic_pm_domain *genpd, int st) { return -ENOSYS; } static inline int pm_genpd_name_attach_cpuidle(const char *name, int state) { return -ENOSYS; } static inline int pm_genpd_detach_cpuidle(struct generic_pm_domain *genpd) { return -ENOSYS; } static inline int pm_genpd_name_detach_cpuidle(const char *name) { return -ENOSYS; } static inline void pm_genpd_init(struct generic_pm_domain *genpd, struct dev_power_governor *gov, bool is_off) { } static inline int pm_genpd_poweron(struct generic_pm_domain *genpd) { return -ENOSYS; } static inline int pm_genpd_name_poweron(const char *domain_name) { return -ENOSYS; } static inline bool default_stop_ok(struct device *dev) { return false; } #define simple_qos_governor NULL #define pm_domain_always_on_gov NULL #endif static inline int pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev) { return __pm_genpd_add_device(genpd, dev, NULL); } static inline int pm_genpd_of_add_device(struct device_node *genpd_node, struct device *dev) { return __pm_genpd_of_add_device(genpd_node, dev, NULL); } static inline int pm_genpd_name_add_device(const char *domain_name, struct device *dev) { return __pm_genpd_name_add_device(domain_name, dev, NULL); } static inline int pm_genpd_remove_callbacks(struct device *dev) { return __pm_genpd_remove_callbacks(dev, true); } #ifdef CONFIG_PM_GENERIC_DOMAINS_RUNTIME extern void genpd_queue_power_off_work(struct generic_pm_domain *genpd); extern void pm_genpd_poweroff_unused(void); #else static inline void genpd_queue_power_off_work(struct generic_pm_domain *gpd) {} static inline void pm_genpd_poweroff_unused(void) {} #endif #ifdef CONFIG_PM_GENERIC_DOMAINS_SLEEP extern void pm_genpd_syscore_switch(struct device *dev, bool suspend); #else static inline void pm_genpd_syscore_switch(struct device *dev, bool suspend) {} #endif static inline void pm_genpd_syscore_poweroff(struct device *dev) { pm_genpd_syscore_switch(dev, true); } static inline void pm_genpd_syscore_poweron(struct device *dev) { pm_genpd_syscore_switch(dev, false); } #endif /* _LINUX_PM_DOMAIN_H */


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