drm/radeon: fix VM syncing with multiple rings

When a VM is used on more than one ring we need to
sync to the last user.

Signed-off-by: Christian König <deathsimple@vodafone.de>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
This commit is contained in:
Christian König 2012-09-06 13:48:07 +02:00 • committed by Alex Deucher
commit 1678dbc22e