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PM: Update the policy on default wakeup settings

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This patch (as1485) documents a change to the kernel's default wakeup
policy.  Devices that forward wakeup requests between buses should be
enabled for wakeup by default.

Signed-off-by: Alan Stern <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
Alan Stern 2011-09-26 17:38:50 +02:00 • committed by Rafael J. Wysocki
commit 8f88893c05
2 changed files with 6 additions and 2 deletions
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4
Documentation/power/devices.txt
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@ -152,7 +152,9 @@ try to use its wakeup mechanism. device_set_wakeup_enable() affects this flag;
for the most part drivers should not change its value. The initial value of
should_wakeup is supposed to be false for the majority of devices; the major
exceptions are power buttons, keyboards, and Ethernet adapters whose WoL
(wake-on-LAN) feature has been set up with ethtool.
(wake-on-LAN) feature has been set up with ethtool. It should also default
to true for devices that don't generate wakeup requests on their own but merely
forward wakeup requests from one bus to another (like PCI bridges).
Whether or not a device is capable of issuing wakeup events is a hardware
matter, and the kernel is responsible for keeping track of it. By contrast,