diff options
Diffstat (limited to 'Documentation/power/runtime_pm.txt')
| -rw-r--r-- | Documentation/power/runtime_pm.txt | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/Documentation/power/runtime_pm.txt b/Documentation/power/runtime_pm.txt index f32ce5419573..44fe1d28a163 100644 --- a/Documentation/power/runtime_pm.txt +++ b/Documentation/power/runtime_pm.txt @@ -229,13 +229,13 @@ defined in include/linux/pm.h: - if set, the value of child_count is ignored (but still updated) unsigned int disable_depth; - - used for disabling the helper funcions (they work normally if this is + - used for disabling the helper functions (they work normally if this is equal to zero); the initial value of it is 1 (i.e. runtime PM is initially disabled for all devices) int runtime_error; - if set, there was a fatal error (one of the callbacks returned error code - as described in Section 2), so the helper funtions will not work until + as described in Section 2), so the helper functions will not work until this flag is cleared; this is the error code returned by the failing callback @@ -468,6 +468,10 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h: - set the power.irq_safe flag for the device, causing the runtime-PM callbacks to be invoked with interrupts off + bool pm_runtime_is_irq_safe(struct device *dev); + - return true if power.irq_safe flag was set for the device, causing + the runtime-PM callbacks to be invoked with interrupts off + void pm_runtime_mark_last_busy(struct device *dev); - set the power.last_busy field to the current time @@ -524,7 +528,7 @@ pm_runtime_put_sync_autosuspend() 5. Runtime PM Initialization, Device Probing and Removal Initially, the runtime PM is disabled for all devices, which means that the -majority of the runtime PM helper funtions described in Section 4 will return +majority of the runtime PM helper functions described in Section 4 will return -EAGAIN until pm_runtime_enable() is called for the device. In addition to that, the initial runtime PM status of all devices is |