This is used for direct IB submission to ring.
Signed-off-by: xinhui pan <xinhui....@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c | 2 ++
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h | 1 +
2 files changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
index ab2351ba9574..f97a28a49120 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
@@ -184,6 +184,8 @@ int amdgpu_ring_init(struct amdgpu_device *adev, struct
amdgpu_ring *ring,
else if (ring == &adev->sdma.instance[0].page)
sched_hw_submission = 256;
+ mutex_init(&ring->lock);
+
if (ring->adev == NULL) {
if (adev->num_rings >= AMDGPU_MAX_RINGS)
return -EINVAL;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
index 4d380e79752c..544766429b5c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
@@ -215,6 +215,7 @@ struct amdgpu_ring {
struct amdgpu_fence_driver fence_drv;
struct drm_gpu_scheduler sched;
+ struct mutex lock;
struct amdgpu_bo *ring_obj;
volatile uint32_t *ring;
unsigned rptr_offs;
--
2.25.1
