tree ec620a55e21631efee6622f12338fae59b41d1ae
parent e41f8d709c31b42129a34305a99d29c38aff75c4
author Stefan Richter <stefanr@s5r6.in-berlin.de> 1244142523 +0200
committer Stefan Richter <stefanr@s5r6.in-berlin.de> 1244211977 +0200

firewire: ohci: access bus_seconds atomically

In the unlikely event that card->driver->get_bus_time() is called during
a cycle64Seconds interrupt, we could read garbage unless atomic accesses
are used.

The switch to atomic ops requires to change the 64 seconds counter from
unsigned to signed, but this shouldn't matter to the end result.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>