USB autosuspend in F12

Roberto Ragusa mail at robertoragusa.it
Wed Jun 10 19:29:48 UTC 2009


Matthew Garrett wrote:

> The 
> issue is more about letting the *bus* power down. How much we save will 
> depend on the specific bus layout on a given machine, and also whether 
> we can successfully autosuspend all of the drivers.

Modern machines are full of (mostly empty) buses, so there is hope the
gain will not be insignificant. :-)

$ lsusb
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 010: ID 0a5c:2110 Broadcom Corp. Bluetooth Controller
Bus 003 Device 003: ID 0483:2016 SGS Thomson Microelectronics Fingerprint Reader
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub


-- 
   Roberto Ragusa    mail at robertoragusa.it




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