[Intel-gfx] [PATCH v4 0/4] Fix modeset locking issue in HDCP MST

[Manna, Animesh]

> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces at lists.freedesktop.org> On Behalf Of Suraj
> Kandpal
> Sent: Monday, May 15, 2023 4:02 PM
> To: intel-gfx at lists.freedesktop.org
> Subject: [Intel-gfx] [PATCH v4 0/4] Fix modeset locking issue in HDCP MST
> 
> HDCP MST scenario sees modeset locking issue ever since topology_state was
> added to drm_atomic_state and all modeset locks were being taken for us
> causing a locking issue to occur when we iterate over connectors to assign
> vcpi id, the fix being to pass acquire_ctx to drm_modeset_lock.
> 
> --v2
> -call intel_hdcp_prepare_stream instead of intel_hdcp_required_stream in
> the beginning [Ankit] -replace intel_connector argument with intel_encoder
> [Jani]
> 
> --v3
> -break intel_hdcp_required_stream to two parts and call
> intel_hdcp_set_content_streams at beginning [Ankit] -Move encoder_type0
> out of loop [Ankit]
> 
> --v4
> -rename intel_set_content_stream [Ankit] -remove return type from
> intel_hdcp_prepare_stream and intel_hdcp_required_content_stream
> [Ankit]
> 
> Signed-off-by: Suraj Kandpal <suraj.kandpal at intel.com>
> 
> Suraj Kandpal (4):
>   drm/i915/hdcp: add intel_atomic_state argument to hdcp_enable function
>   drm/i915/hdcp: Remove enforce_type0 check outside loop
>   drm/i915/hdcp: Fix modeset locking issue in hdcp mst
>   drm/i915/hdcp: Fill hdcp2_streamid_type and k in appropriate places

Pushed the changes to din. Thanks for patches.

Regards,
Animesh
> 
>  drivers/gpu/drm/i915/display/intel_ddi.c    |   4 +-
>  drivers/gpu/drm/i915/display/intel_dp_mst.c |   4 +-
>  drivers/gpu/drm/i915/display/intel_hdcp.c   | 143 ++++++++++----------
>  drivers/gpu/drm/i915/display/intel_hdcp.h   |   6 +-
>  4 files changed, 81 insertions(+), 76 deletions(-)
> 
> --
> 2.25.1