tmakin/tegra-linux-noble
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

UBUNTU: SAUCE: drm/amd/display: Fix system hang while resume with TBT monitor

Browse Source 
BugLink: https://bugs.launchpad.net/bugs/2083182

[Why]
Connected with a Thunderbolt monitor and do the suspend and the system
may hang while resume.

The TBT monitor HPD will be triggered during the resume procedure
and call the drm_client_modeset_probe() while
struct drm_connector connector->dev->master is NULL.

It will mess up the pipe topology after resume.

[How]
Skip the TBT monitor HPD during the resume procedure because we
currently will probe the connectors after resume by default.

Reviewed-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Fangzhi Zuo <jerry.zuo@amd.com>
(cherry picked from commit https://lore.kernel.org/all/20240927170103.102180-3-Jerry.Zuo@amd.com/T/#e868f6b967ec79ae85c5a8a446be9b5d5c97e5427)
Signed-off-by: Chia-Lin Kao (AceLan) <acelan.kao@canonical.com>
Acked-by: Guoqing Jiang <guoqing.jiang@canonical.com>
Acked-by: Ivan Hu <ivan.hu@canonical.com>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>
This commit is contained in:
Tom Chung
2024-09-30 10:55:17 +08:00
committed by Mehmet Basaran
parent e6be77fef2
commit 3aeb488b83
1 changed files with 6 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+6
View File
@@ -756,6 +756,12 @@ static void dmub_hpd_callback(struct amdgpu_device *adev,
return;
}
/* Skip DMUB HPD IRQ in suspend/resume. We will probe them later. */
if (notify->type == DMUB_NOTIFICATION_HPD && adev->in_suspend) {
DRM_INFO("Skip DMUB HPD IRQ callback in suspend/resume\n");
return;
}
link_index = notify->link_index;
link = adev->dm.dc->links[link_index];
dev = adev->dm.ddev;