diff options
| author | Rafael J. Wysocki <rjw@sisk.pl> | 2011-02-09 01:26:02 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2011-03-15 02:43:14 +0300 |
| commit | cb8f51bdadb7969139c2e39c2defd4cde98c1ea8 (patch) | |
| tree | a6d6e20878460d50b8f61d5fe3237818c54065eb /drivers/base/power/power.h | |
| parent | 4681b17154b3fd81f898802262985f662344e6ed (diff) | |
| download | linux-cb8f51bdadb7969139c2e39c2defd4cde98c1ea8.tar.xz | |
PM: Do not create wakeup sysfs files for devices that cannot wake up
Currently, wakeup sysfs attributes are created for all devices,
regardless of whether or not they are wakeup-capable. This is
excessive and complicates wakeup device identification from user
space (i.e. to identify wakeup-capable devices user space has to read
/sys/devices/.../power/wakeup for all devices and see if they are not
empty).
Fix this issue by avoiding to create wakeup sysfs files for devices
that cannot wake up the system from sleep states (i.e. whose
power.can_wakeup flags are unset during registration) and modify
device_set_wakeup_capable() so that it adds (or removes) the relevant
sysfs attributes if a device's wakeup capability status is changed.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'drivers/base/power/power.h')
| -rw-r--r-- | drivers/base/power/power.h | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/drivers/base/power/power.h b/drivers/base/power/power.h index 698dde742587..f2a25f18fde7 100644 --- a/drivers/base/power/power.h +++ b/drivers/base/power/power.h @@ -58,19 +58,18 @@ static inline void device_pm_move_last(struct device *dev) {} * sysfs.c */ -extern int dpm_sysfs_add(struct device *); -extern void dpm_sysfs_remove(struct device *); -extern void rpm_sysfs_remove(struct device *); +extern int dpm_sysfs_add(struct device *dev); +extern void dpm_sysfs_remove(struct device *dev); +extern void rpm_sysfs_remove(struct device *dev); +extern int wakeup_sysfs_add(struct device *dev); +extern void wakeup_sysfs_remove(struct device *dev); #else /* CONFIG_PM */ -static inline int dpm_sysfs_add(struct device *dev) -{ - return 0; -} - -static inline void dpm_sysfs_remove(struct device *dev) -{ -} +static inline int dpm_sysfs_add(struct device *dev) { return 0; } +static inline void dpm_sysfs_remove(struct device *dev) {} +static inline void rpm_sysfs_remove(struct device *dev) {} +static inline int wakeup_sysfs_add(struct device *dev) { return 0; } +static inline void wakeup_sysfs_remove(struct device *dev) {} #endif |