| commit | 9d60ef2bd87f201c509cfae13ba6c9013446673d | [log] [tgz] |
|---|---|---|
| author | Clemens Ladisch <clemens@ladisch.de> | Thu May 24 19:29:19 2012 +0200 |
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | Sun May 27 12:31:11 2012 +0200 |
| tree | 76c4c28d674d33c924f638cde404bfafede88e15 | |
| parent | f07d42ac7f2a7d650125d0cd7a79631c4522edaf [diff] |
firewire: ohci: lazy bus time initialization The Bus_Time CSR is virtually never used, so we can avoid burning CPU in interrupt context for 1 or 3 IsochronousCycleTimer accesses every minute by not tracking the bus time until the CSR is actually accessed for the first time. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>