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PM / Runtime: Add sysfs switch for disabling device run-time PM

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Add new device sysfs attribute, power/control, allowing the user
space to block the run-time power management of the devices.  If this
attribute is set to "on", the driver of the device won't be able to power
manage it at run time (without breaking the rules) and the device will
always be in the full power state (except when the entire system goes
into a sleep state).

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
This commit is contained in:
Rafael J. Wysocki 2010-01-23 22:02:51 +01:00
parent 68c6b85984
commit 5382363917
4 changed files with 101 additions and 0 deletions
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1
include/linux/pm.h
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@ -430,6 +430,7 @@ struct dev_pm_info {
unsigned int request_pending:1;
unsigned int deferred_resume:1;
unsigned int run_wake:1;
unsigned int runtime_auto:1;
enum rpm_request request;
enum rpm_status runtime_status;
int runtime_error;