| What:           /sys/class/usb_host/usb_hostN/wusb_chid | 
 | Date:           July 2008 | 
 | KernelVersion:  2.6.27 | 
 | Contact:        David Vrabel <david.vrabel@csr.com> | 
 | Description: | 
 |                 Write the CHID (16 space-separated hex octets) for this host controller. | 
 |                 This starts the host controller, allowing it to accept connection from | 
 |                 WUSB devices. | 
 |  | 
 |                 Set an all zero CHID to stop the host controller. | 
 |  | 
 | What:           /sys/class/usb_host/usb_hostN/wusb_trust_timeout | 
 | Date:           July 2008 | 
 | KernelVersion:  2.6.27 | 
 | Contact:        David Vrabel <david.vrabel@csr.com> | 
 | Description: | 
 |                 Devices that haven't sent a WUSB packet to the host | 
 |                 within 'wusb_trust_timeout' ms are considered to have | 
 |                 disconnected and are removed.  The default value of | 
 |                 4000 ms is the value required by the WUSB | 
 |                 specification. | 
 |  | 
 |                 Since this relates to security (specifically, the | 
 |                 lifetime of PTKs and GTKs) it should not be changed | 
 |                 from the default. |