]> git.ipfire.org Git - thirdparty/kernel/stable.git/commit
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)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 19 May 2021 08:29:34 +0000 (10:29 +0200)
commit4de0a3f610a9303a4ddda0153dd7afd27188c10c
tree9ed0a2f631df586ae6b08d2a3a63e3ff08513db0
parent2c633e16a8cdd7fc72df1efa176718809f86926a
drm/amd/display: add handling for hdcp2 rx id list validation

[ Upstream commit 4ccf9446b2a3615615045346c97f8a1e2a16568a ]

[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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.c