[1/4] I/OAT: fix channel resources free for not allocated channels

If the ioatdma driver is loaded but not used it does not allocate descriptors.
Before it frees channel resources it should first be sure
that they have been previously allocated.

Cc: <stable@kernel.org>
Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Tested-by: Tom Picard <tom.s.picard@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Maciej Sosnowski 2008-11-07 01:45:52 +00:00 committed by David S. Miller
commit c3d4f44f50