drm/amdgpu: fix potential memory leak during navi12 deinitialization

[ Upstream commit e6d5c64efaa34aae3815a9afeb1314a976142e83 ]

Navi12 HDCP & DTM deinitialization needs continue to free bo if already
created though initialized flag is not set.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Jiawei Gu <Jiawei.Gu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index a6dbe4b..2f47f81 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -1283,8 +1283,12 @@ static int psp_hdcp_terminate(struct psp_context *psp)
        if (amdgpu_sriov_vf(psp->adev))
                return 0;
 
-       if (!psp->hdcp_context.hdcp_initialized)
-               return 0;
+       if (!psp->hdcp_context.hdcp_initialized) {
+               if (psp->hdcp_context.hdcp_shared_buf)
+                       goto out;
+               else
+                       return 0;
+       }
 
        ret = psp_hdcp_unload(psp);
        if (ret)
@@ -1292,6 +1296,7 @@ static int psp_hdcp_terminate(struct psp_context *psp)
 
        psp->hdcp_context.hdcp_initialized = false;
 
+out:
        /* free hdcp shared memory */
        amdgpu_bo_free_kernel(&psp->hdcp_context.hdcp_shared_bo,
                              &psp->hdcp_context.hdcp_shared_mc_addr,
@@ -1430,8 +1435,12 @@ static int psp_dtm_terminate(struct psp_context *psp)
        if (amdgpu_sriov_vf(psp->adev))
                return 0;
 
-       if (!psp->dtm_context.dtm_initialized)
-               return 0;
+       if (!psp->dtm_context.dtm_initialized) {
+               if (psp->dtm_context.dtm_shared_buf)
+                       goto out;
+               else
+                       return 0;
+       }
 
        ret = psp_dtm_unload(psp);
        if (ret)
@@ -1439,6 +1448,7 @@ static int psp_dtm_terminate(struct psp_context *psp)
 
        psp->dtm_context.dtm_initialized = false;
 
+out:
        /* free hdcp shared memory */
        amdgpu_bo_free_kernel(&psp->dtm_context.dtm_shared_bo,
                              &psp->dtm_context.dtm_shared_mc_addr,