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authorAlan Stern <stern@rowland.harvard.edu>2011-09-26 17:38:50 +0200
committerRafael J. Wysocki <rjw@sisk.pl>2011-10-16 23:28:51 +0200
commit8f88893c05f2f677f18f2ce5591b4bed5d4a7535 (patch)
tree4368e42a2c35ee018f7cd91b8fa6643f6ff2b852 /Documentation/power
parent37cce26b32142f09a8967f6d238178af654b20de (diff)
downloadlwn-8f88893c05f2f677f18f2ce5591b4bed5d4a7535.tar.gz
lwn-8f88893c05f2f677f18f2ce5591b4bed5d4a7535.zip
PM: Update the policy on default wakeup settings
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 <stern@rowland.harvard.edu> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'Documentation/power')
-rw-r--r--Documentation/power/devices.txt4
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/power/devices.txt b/Documentation/power/devices.txt
index 3384d5996be2..29b7a9817f5a 100644
--- a/Documentation/power/devices.txt
+++ b/Documentation/power/devices.txt
@@ -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,