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| author | Clemens Ladisch <clemens@ladisch.de> | 2012-05-24 21:29:19 +0400 |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2012-05-27 14:31:11 +0400 |
| commit | 9d60ef2bd87f201c509cfae13ba6c9013446673d (patch) | |
| tree | 76c4c28d674d33c924f638cde404bfafede88e15 /drivers/firewire/init_ohci1394_dma.c | |
| parent | f07d42ac7f2a7d650125d0cd7a79631c4522edaf (diff) | |
| download | linux-9d60ef2bd87f201c509cfae13ba6c9013446673d.tar.xz | |
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>
Diffstat (limited to 'drivers/firewire/init_ohci1394_dma.c')
0 files changed, 0 insertions, 0 deletions