* FAILED: patch "[PATCH] drm/amd/display: Check dc_sink every time in MST hotplug" failed to apply to 4.16-stable tree
@ 2018-04-29 12:51 gregkh
0 siblings, 0 replies; only message in thread
From: gregkh @ 2018-04-29 12:51 UTC (permalink / raw)
To: Jerry.Zuo, Harry.Wentland, Roman.Li, alexander.deucher; +Cc: stable
The patch below does not apply to the 4.16-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>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 7ad35721e7d5a5b56a4eddcdd9920c3c1e51ae4c Mon Sep 17 00:00:00 2001
From: "Jerry (Fangzhi) Zuo" <Jerry.Zuo@amd.com>
Date: Tue, 17 Apr 2018 14:39:09 -0400
Subject: [PATCH] drm/amd/display: Check dc_sink every time in MST hotplug
Extended fix to: "Don't read EDID in atomic_check"
Fix issue of missing dc_sink in .mode_valid in hot plug routine.
Need to check dc_sink everytime in .get_modes hook after checking
edid, since edid is not getting removed in hot unplug but dc_sink
doesn't.
Signed-off-by: Jerry (Fangzhi) Zuo <Jerry.Zuo@amd.com>
Reviewed-by: Roman Li <Roman.Li@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
index 8c1d084429dc..ace9ad578ca0 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
@@ -226,10 +226,6 @@ static int dm_dp_mst_get_modes(struct drm_connector *connector)
if (!aconnector->edid) {
struct edid *edid;
- struct dc_sink *dc_sink;
- struct dc_sink_init_data init_params = {
- .link = aconnector->dc_link,
- .sink_signal = SIGNAL_TYPE_DISPLAY_PORT_MST };
edid = drm_dp_mst_get_edid(connector, &aconnector->mst_port->mst_mgr, aconnector->port);
if (!edid) {
@@ -240,11 +236,17 @@ static int dm_dp_mst_get_modes(struct drm_connector *connector)
}
aconnector->edid = edid;
+ }
+ if (!aconnector->dc_sink) {
+ struct dc_sink *dc_sink;
+ struct dc_sink_init_data init_params = {
+ .link = aconnector->dc_link,
+ .sink_signal = SIGNAL_TYPE_DISPLAY_PORT_MST };
dc_sink = dc_link_add_remote_sink(
aconnector->dc_link,
- (uint8_t *)edid,
- (edid->extensions + 1) * EDID_LENGTH,
+ (uint8_t *)aconnector->edid,
+ (aconnector->edid->extensions + 1) * EDID_LENGTH,
&init_params);
dc_sink->priv = aconnector;
@@ -252,7 +254,7 @@ static int dm_dp_mst_get_modes(struct drm_connector *connector)
if (aconnector->dc_sink)
amdgpu_dm_add_sink_to_freesync_module(
- connector, edid);
+ connector, aconnector->edid);
}
drm_mode_connector_update_edid_property(
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2018-04-29 12:51 FAILED: patch "[PATCH] drm/amd/display: Check dc_sink every time in MST hotplug" failed to apply to 4.16-stable tree gregkh
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