tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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drm/amd/display: Disable virtual links

[Why]
This could work around the issue with DP tunneling producing
a NULL pointer dereference.

[How]
Disable the virtual links.

Reviewed-by: Tom Chung <chiahsuan.chung@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Stylon Wang <stylon.wang@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

authored by

Stylon Wang and committed by
Alex Deucher b22c3362 9af4377f

+1 -1
+1 -1
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
··· 1713 1713 1714 1714 /* Enable DWB for tested platforms only */ 1715 1715 if (adev->ip_versions[DCE_HWIP][0] >= IP_VERSION(3, 0, 0)) 1716 - init_data.num_virtual_links = 1; 1716 + init_data.num_virtual_links = 0; 1717 1717 1718 1718 INIT_LIST_HEAD(&adev->dm.da_list); 1719 1719