The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-4.19.y git checkout FETCH_HEAD git cherry-pick -x 038e2e2e0150f1649d40f7d915561cdf9e4dd5bf # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2024061950-overcome-uninjured-b012@gregkh' --subject-prefix 'PATCH 4.19.y' HEAD^..
Possible dependencies:
038e2e2e0150 ("drm/amd/display: Set VSC SDP Colorimetry same way for MST and SST") 1abfb9f9c767 ("drm/amd/display: Program VSC SDP colorimetry for all DP sinks >= 1.4") 285a7054bf81 ("drm/amd/display: Remove plane and stream pointers from dc scratch") 02367f529019 ("drm/amd/display: fix a dereference of a NULL pointer") 5daa29473cf6 ("Revert "drm/amd/display: Fix sending VSC (+ colorimetry) packets for DP/eDP displays without PSR"") d62d5551dd61 ("drm/amd/display: Backup and restore only on full updates") 2d5bb791e24f ("drm/amd/display: Implement update_planes_and_stream_v3 sequence") d2dea1f14038 ("drm/amd/display: Generalize new minimal transition path") 0701117efd1e ("Revert "drm/amd/display: For FPO and SubVP/DRR configs program vmin/max sel"") a9b1a4f684b3 ("drm/amd/display: Add more checks for exiting idle in DC") dcbf438d4834 ("drm/amd/display: Unify optimize_required flags and VRR adjustments") 9ccfe80d022d ("drm/amd/display: Fix potential NULL pointer dereferences in 'dcn10_set_output_transfer_func()'") 8457bddc266c ("drm/amd/display: Revert "Rework DC Z10 restore"") 2a8e918f48bd ("drm/amd/display: add power_state and pme_pending flag") e6f82bd44b40 ("drm/amd/display: Rework DC Z10 restore") 012fe0674af0 ("drm/amd/display: Add logging resource checks") a465536ebff8 ("drm/amd/display: revert "Optimize VRR updates to only necessary ones"") 30afdffb3f60 ("drm/amd/display: Fix sending VSC (+ colorimetry) packets for DP/eDP displays without PSR") ca1ecae145b2 ("drm/amd/display: Add null pointer guards where needed") a71e1310a43f ("drm/amd/display: Add more mechanisms for tests")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 038e2e2e0150f1649d40f7d915561cdf9e4dd5bf Mon Sep 17 00:00:00 2001 From: Harry Wentland harry.wentland@amd.com Date: Thu, 21 Mar 2024 11:13:38 -0400 Subject: [PATCH] drm/amd/display: Set VSC SDP Colorimetry same way for MST and SST
The previous check for the is_vsc_sdp_colorimetry_supported flag for MST sink signals did nothing. Simplify the code and use the same check for MST and SST.
Cc: stable@vger.kernel.org Reviewed-by: Agustin Gutierrez agustin.gutierrez@amd.com Acked-by: Hamza Mahfooz hamza.mahfooz@amd.com Signed-off-by: Harry Wentland harry.wentland@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 7b016a2125e0..4d9a76446df8 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -6333,15 +6333,9 @@ create_stream_for_sink(struct drm_connector *connector, // should decide stream support vsc sdp colorimetry capability // before building vsc info packet // - stream->use_vsc_sdp_for_colorimetry = false; - if (aconnector->dc_sink->sink_signal == SIGNAL_TYPE_DISPLAY_PORT_MST) { - stream->use_vsc_sdp_for_colorimetry = - aconnector->dc_sink->is_vsc_sdp_colorimetry_supported; - } else { - if (stream->link->dpcd_caps.dpcd_rev.raw >= 0x14 && - stream->link->dpcd_caps.dprx_feature.bits.VSC_SDP_COLORIMETRY_SUPPORTED) - stream->use_vsc_sdp_for_colorimetry = true; - } + stream->use_vsc_sdp_for_colorimetry = stream->link->dpcd_caps.dpcd_rev.raw >= 0x14 && + stream->link->dpcd_caps.dprx_feature.bits.VSC_SDP_COLORIMETRY_SUPPORTED; + if (stream->out_transfer_func.tf == TRANSFER_FUNCTION_GAMMA22) tf = TRANSFER_FUNC_GAMMA_22; mod_build_vsc_infopacket(stream, &stream->vsc_infopacket, stream->output_color_space, tf);