1eaafbc3aSAlan SternWhat: /sys/bus/usb/devices/.../power/autosuspend 2eaafbc3aSAlan SternDate: March 2007 3eaafbc3aSAlan SternKernelVersion: 2.6.21 4eaafbc3aSAlan SternContact: Alan Stern <stern@rowland.harvard.edu> 5eaafbc3aSAlan SternDescription: 6eaafbc3aSAlan Stern Each USB device directory will contain a file named 7eaafbc3aSAlan Stern power/autosuspend. This file holds the time (in seconds) 8eaafbc3aSAlan Stern the device must be idle before it will be autosuspended. 9eaafbc3aSAlan Stern 0 means the device will be autosuspended as soon as 10eaafbc3aSAlan Stern possible. Negative values will prevent the device from 11eaafbc3aSAlan Stern being autosuspended at all, and writing a negative value 12eaafbc3aSAlan Stern will resume the device if it is already suspended. 13eaafbc3aSAlan Stern 14eaafbc3aSAlan Stern The autosuspend delay for newly-created devices is set to 15eaafbc3aSAlan Stern the value of the usbcore.autosuspend module parameter. 16