On 2012年06月04日 23:02, Alan Stern wrote:
On Mon, 4 Jun 2012, Lan Tianyu wrote:
s/attribue/attribute/ -- here and below
+ allows the user space to control the power policy on the usb port
+
+ All ports have one of the following three values for portX/control
+ "auto" - For ports with device, if the device was not in the suspend
+ at that pointer, the power would remain on but it would power
+ off when it was suspended. If the the device was in the suspend,
+ "auto" means the device could be put into much lower state so
+ the device would be resumed and suspended again.
The patch does not implement anything at all for "auto". It should do
_something_.
Yeah, if we don't power off port without device when echo "auto" > portX/control,
this patch does nothing about "auto". Original plan is to deal with port without
devices firstly. Do you mean I should add the process of port with device in this
patch?
--
Best Regards
Tianyu Lan
linux kernel enabling team
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