From: Felix Kuehling <Felix.Kuehling@xxxxxxx>
[ Upstream commit dcafbd50f2e4d5cc964aae409fb5691b743fba23 ]
Hawaii needs to flush caches explicitly, submitting an IB in a user
VMID from kernel mode. There is no s_fence in this case.
Fixes: eb3961a57424 ("drm/amdgpu: remove fence context from the job")
Signed-off-by: Felix Kuehling <Felix.Kuehling@xxxxxxx>
Reviewed-by: Christian König <christian.koenig@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
index 7850084a05e3a..60655834d6498 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
@@ -143,7 +143,8 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
/* ring tests don't use a job */
if (job) {
vm = job->vm;
- fence_ctx = job->base.s_fence->scheduled.context;
+ fence_ctx = job->base.s_fence ?
+ job->base.s_fence->scheduled.context : 0;
} else {
vm = NULL;
fence_ctx = 0;
--
2.20.1
