diff options
| author | Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> | 2020-03-30 17:44:00 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-04-03 17:01:18 -0400 |
| commit | 8913f7ff0580605093563688f58e427dd0014609 (patch) | |
| tree | dcdf482acfa7f0c4cee6d69179bd02b3befc51df /drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h | |
| parent | c0ed2ca61f9085a98b3b3d4a61582741adde9260 (diff) | |
drm/amd/display: Guard calls to hdcp_ta and dtm_ta
[Why]
The buffer used when calling psp is a shared buffer. If we have multiple calls
at the same time we can overwrite the buffer.
[How]
Add mutex to guard the shared buffer.
Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h index 297435c0c7c1..6a717fd5efc7 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h @@ -161,6 +161,7 @@ struct psp_hdcp_context { struct amdgpu_bo *hdcp_shared_bo; uint64_t hdcp_shared_mc_addr; void *hdcp_shared_buf; + struct mutex mutex; }; struct psp_dtm_context { @@ -169,6 +170,7 @@ struct psp_dtm_context { struct amdgpu_bo *dtm_shared_bo; uint64_t dtm_shared_mc_addr; void *dtm_shared_buf; + struct mutex mutex; }; #define MEM_TRAIN_SYSTEM_SIGNATURE 0x54534942 |