drm/i915/hdcp: Modify hdcp_gsc_message msg sending mechanism

Browse source

Allocate a multipage object that can be used for input
and output for intel_hdcp_gsc_message so that corruption of
output message can be avoided by the current overwriting method.
Modify intel_gsc_send_sync() to take into account header_out
and addr_out so as to use them to verify the message send status.
Check link for comment and review history
https://patchwork.freedesktop.org/series/118499/

--v2
-Change approach from allocating two objects to just one multipage
object [Daniele]

--v3
-Squash the two patches together [Daniele]
-No need to allocate twice the size of intel_hdcp_gsc_message [Daniele]

Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Cc: Alan Previn <alan.previn.teres.alexis@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230602105113.1791104-1-suraj.kandpal@intel.com

...

This commit is contained in:

Suraj Kandpal 2023-06-02 16:21:13 +05:30 • committed by Ankit Nautiyal

parent 19a49f3995

commit b3e4aae612

2 changed files with 49 additions and 34 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

80

drivers/gpu/drm/i915/display/intel_hdcp_gsc.c

View file

3

drivers/gpu/drm/i915/display/intel_hdcp_gsc.h

View file