path: root/Documentation/ABI/testing/sysfs-devices-power
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authorAlan Stern <stern@rowland.harvard.edu>2010-09-25 23:35:00 +0200
committerRafael J. Wysocki <rjw@sisk.pl>2010-10-17 01:57:46 +0200
commit1bfee5bc86fdaecc912e06080583eddab7263df2 (patch)
tree1f1b0f5ff1b9b7a5eed1ccd62de1d8ffb37f2ea3 /Documentation/ABI/testing/sysfs-devices-power
parent3f9af0513ae5b1f185302c2d0ba656640926d970 (diff)
PM / Runtime: Merge synchronous and async runtime routines
This patch (as1423) merges the asynchronous routines __pm_request_idle(), __pm_request_suspend(), and __pm_request_resume() with their synchronous counterparts. The RPM_ASYNC bitflag argument serves to indicate what sort of operation to perform. In the course of performing this merger, it became apparent that the various functions don't all behave consistenly with regard to error reporting and cancellation of outstanding requests. A new routine, rpm_check_suspend_allowed(), was written to centralize much of the testing, and the other functions were revised to follow a simple algorithm: If the operation is disallowed because of the device's settings or current state, return an error. Cancel pending or scheduled requests of lower priority. Schedule, queue, or perform the desired operation. A few special cases and exceptions are noted in comments. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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