commit 459f79235d8faa0050180c7e0c7bb4b2b52cbdfd
author Stefan Richter <stefanr@s5r6.in-berlin.de> Sat May 24 16:50:22 2008 +0200
committer Stefan Richter <stefanr@s5r6.in-berlin.de> Mon Jul 14 13:06:03 2008 +0200
tree 97847b1b06ded6c136cdba73bc961a46a3e39a30
parent 2147ef204f57191e0fff6d5d3d1a0336afa6cfae

firewire: clean up fw_card reference counting

This is a functionally equivalent replacement of the current reference
counting of struct fw_card instances.  It only converts it to common
idioms as suggested by Kristian Høgsberg:
  - struct kref replaces atomic_t as the counter.
  - wait_for_completion is used to wait for all card users to complete.

BTW, it may make sense to count card->flush_timer and card->work as
card users too.

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