drm/nouveau/core: Move event index check from critical section

The index_nr field is constant for the lifetime of the event, so
serialized access is unnecessary.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Peter Hurley 2013-08-27 16:12:55 -04:00 • committed by Ben Skeggs
commit 019255797d