drm/amd/display: Improvements in secure display

[Why]
- Need error message when failing to allocating secure_display_ctx.
- Need to check if secure display context in psp is initialized or not
before using it.

[How]
- Add error message when memory allocation fail.
- Add check before accessing psp secure display context.

Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alan Liu <HaoPing.Liu@amd.com>
Reviewed-by: Wayne Lin <Wayne.Lin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 0a3eb6d27f98..2ff3d4fa8a12 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1643,6 +1643,9 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
 #endif
 #if defined(CONFIG_DRM_AMD_SECURE_DISPLAY)
 	adev->dm.secure_display_ctxs = amdgpu_dm_crtc_secure_display_create_contexts(adev);
+	if (!adev->dm.secure_display_ctxs) {
+		DRM_ERROR("amdgpu: failed to initialize secure_display_ctxs.\n");
+	}
 #endif
 	if (dc_is_dmub_outbox_supported(adev->dm.dc)) {
 		init_completion(&adev->dm.dmub_aux_transfer_done);