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authorRamalingam C <ramalingam.c@intel.com>2018-02-03 03:39:03 +0530
committerSean Paul <seanpaul@chromium.org>2018-02-05 12:58:45 -0500
commita01244967d4311afb1a8e068184c2a30202025f5 (patch)
tree0b4eb6e2e3863992abd7d24aef964394792e3b0c /drivers/gpu
parent363932b43dddfaba8095984e2b57674937323f1f (diff)
drm/i915: Handle failure from 2nd stage HDCP auth
We enable the HDCP encryption as a part of first stage authentication. So when second stage authentication fails, we need to disable the HDCP encryption and signalling. This patch ensures that, when hdcp authentication fails, HDCP encryption and signalling is turned off. v2: Dropped connector ref passing to auth [Seanpaul] Moved the call to disable_hdcp() to enable_hdcp() [Seanpaul] v3: No Changes. Added the Reveiwed-by tag. Signed-off-by: Ramalingam C <ramalingam.c@intel.com> Reviewed-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Sean Paul <seanpaul@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/1517609350-10698-2-git-send-email-ramalingam.c@intel.com
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/i915/intel_hdcp.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_hdcp.c b/drivers/gpu/drm/i915/intel_hdcp.c
index b97184eccd9c..de9a925c122d 100644
--- a/drivers/gpu/drm/i915/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/intel_hdcp.c
@@ -562,6 +562,9 @@ static int _intel_hdcp_enable(struct intel_connector *connector)
connector->hdcp_shim);
if (ret) {
DRM_ERROR("Failed to authenticate HDCP (%d)\n", ret);
+
+ /* Ensuring HDCP encryption and signalling are stopped. */
+ _intel_hdcp_disable(connector);
return ret;
}