drm/amd/display: add handling for hdcp2 rx id list validation
authorDingchen (David) Zhang <dingchen.zhang@amd.com>
Mon, 25 Jan 2021 23:05:50 +0000 (18:05 -0500)
committerAlex Deucher <alexander.deucher@amd.com>
Wed, 21 Apr 2021 01:37:51 +0000 (21:37 -0400)
commit4ccf9446b2a3615615045346c97f8a1e2a16568a
tree825f466964b121e14a31bc6db897ef4f4673f923
parent26739690354b699fbbe5f88dba825fc286179123
drm/amd/display: add handling for hdcp2 rx id list validation

[why]
the current implementation of hdcp2 rx id list validation does not
have handler/checker for invalid message status, e.g. HMAC, the V
parameter calculated from PSP not matching the V prime from Rx.

[how]
return a generic FAILURE for any message status not SUCCESS or
REVOKED.

Signed-off-by: Dingchen (David) Zhang <dingchen.zhang@amd.com>
Reviewed-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.c