firewire: convert to idr_alloc()

Convert to the much saner new idr interface.

v2: Stefan pointed out that add_client_resource() may be called from
    non-process context.  Preload iff @gfp_mask contains __GFP_WAIT.
    Also updated to include minor upper limit check.

[[email protected]: fix accidentally orphaned 'minor'[
Signed-off-by: Tejun Heo <[email protected]>
Acked-by: Stefan Richter <[email protected]>
Signed-off-by: Tim Gardner <[email protected]>
Signed-off-by: Stefan Richter <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
2 files changed