leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

drm/i915: Handle failure from 2nd stage HDCP auth

Browse Source 
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
This commit is contained in:
Ramalingam C 2018-02-03 03:39:03 +05:30 committed by Sean Paul
parent 363932b43d
commit a01244967d
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/i915/intel_hdcp.c
View File

@ -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;
}