tree 92c9765b93ee4e93b50eb4c4bd1b9f2497737b69
parent 99b4f25122f43210278cde17a9d100906235a074
author Alex Deucher <alexander.deucher@amd.com> 1384374335 -0500
committer Alex Deucher <alexander.deucher@amd.com> 1384548982 -0500

drm/radeon/vm: don't attempt to update ptes if ib allocation fails

If we fail to allocate an indirect buffer (ib) when updating
the ptes, return an error instead of trying to use the ib.
Avoids a null pointer dereference.

Bug:
https://bugzilla.kernel.org/show_bug.cgi?id=58621

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org