Wayne Lin 7db2c4d145 drm/dp_mst: Skip CSN if topology probing is not done yet ...

commit ddf983488c upstream.

[Why]
During resume, observe that we receive CSN event before we start topology
probing. Handling CSN at this moment based on uncertain topology is
unnecessary.

[How]
Add checking condition in drm_dp_mst_handle_up_req() to skip handling CSN
if the topology is yet to be probed.

Cc: Lyude Paul <lyude@redhat.com>
Cc: Harry Wentland <hwentlan@amd.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Wayne Lin <Wayne.Lin@amd.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240626084825.878565-3-Wayne.Lin@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2024-08-14 13:53:00 +02:00

..

drm_display_helper_mod.c

…

drm_dp_aux_bus.c

…

drm_dp_aux_dev.c

…

drm_dp_cec.c

…

drm_dp_dual_mode_helper.c

…

drm_dp_helper_internal.h

…

drm_dp_helper.c

drm/dp: Don't attempt AUX transfers when eDP panels are not powered

2024-06-12 11:03:21 +02:00

drm_dp_mst_topology_internal.h

…

drm_dp_mst_topology.c

drm/dp_mst: Skip CSN if topology probing is not done yet

2024-08-14 13:53:00 +02:00

drm_dsc_helper.c

…

drm_hdcp_helper.c

…

drm_hdmi_helper.c

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drm_scdc_helper.c

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Kconfig

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Makefile

…