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drm/amdgpu: Correct unlocked update fence handling

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To fix two issues with unlocked update fence:

1. vm->last_unlocked store the latest fence without taking refcount.
2. amdgpu_vm_bo_update_mapping returns old fence, not the latest fence.

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Philip Yang
2022-03-27 22:02:56 -04:00
committed by Alex Deucher
parent 3222a81148
commit 9563e1ec92
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c
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@@ -109,7 +109,7 @@ static int amdgpu_vm_sdma_commit(struct amdgpu_vm_update_params *p,
if (p->unlocked) {
struct dma_fence *tmp = dma_fence_get(f);
swap(p->vm->last_unlocked, f);
swap(p->vm->last_unlocked, tmp);
dma_fence_put(tmp);
} else {
amdgpu_bo_fence(p->vm->root.bo, f, true);