drm/radeon: try to enable VM flushing once more

Let's try to fix bugs related to this instead of just disabling it.

Signed-off-by: Christian König <christian.koenig@amd.com>
Tested-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/radeon/radeon_vm.c b/drivers/gpu/drm/radeon/radeon_vm.c
index 39bc5c2..7590388 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_vm.c
+++ b/drivers/gpu/drm/radeon/radeon_vm.c
@@ -238,8 +238,7 @@ void radeon_vm_flush(struct radeon_device *rdev,
        uint64_t pd_addr = radeon_bo_gpu_offset(vm->page_directory);
 
        /* if we can't remember our last VM flush then flush now! */
-       /* XXX figure out why we have to flush all the time */
-       if (!vm->last_flush || true || pd_addr != vm->pd_gpu_addr) {
+       if (!vm->last_flush || pd_addr != vm->pd_gpu_addr) {
                trace_radeon_vm_flush(pd_addr, ring, vm->id);
                vm->pd_gpu_addr = pd_addr;
                radeon_ring_vm_flush(rdev, ring, vm);