Commit 29b4ac0e authored Jun 09, 2021 by YuBiao Wang Committed by Alex Deucher Jun 11, 2021

drm/amdgpu: reset psp ring wptr during ring_create



[Why]
psp ring wptr is not initialized properly in ring_create,
which would lead to psp failure after several gpu reset.

[How]
Set ring_wptr to zero in psp_ring_create.

Signed-off-by: YuBiao Wang <YuBiao.Wang@amd.com>
Reviewed-by: Horace Chen <horace.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent 076f55a4

drivers/gpu/drm/amd/amdgpu/psp_v11_0.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -461,6 +461,7 @@ static int psp_v11_0_ring_create(struct psp_context *psp,
		struct amdgpu_device *adev = psp->adev;

		if (amdgpu_sriov_vf(adev)) {
		ring->ring_wptr = 0;
		ret = psp_v11_0_ring_stop(psp, ring_type);
		if (ret) {
		DRM_ERROR("psp_v11_0_ring_stop_sriov failed!\n");

drivers/gpu/drm/amd/amdgpu/psp_v3_1.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -227,6 +227,7 @@ static int psp_v3_1_ring_create(struct psp_context *psp,
		psp_v3_1_reroute_ih(psp);

		if (amdgpu_sriov_vf(adev)) {
		ring->ring_wptr = 0;
		ret = psp_v3_1_ring_stop(psp, ring_type);
		if (ret) {
		DRM_ERROR("psp_v3_1_ring_stop_sriov failed!\n");