drm/amd/display: Skip create new stream if crtc state doesn't change

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Need to check if crtc state is changed so that mode set is
required before trying to create new stream.

It deals with the MST hotplug use case when plug back to the
same connector where the failure to create new stream for the
inactive crtc on the old connector.

Signed-off-by: Jerry (Fangzhi) Zuo <Jerry.Zuo@amd.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Jerry (Fangzhi) Zuo 2019-01-11 16:34:31 -05:00 • committed by Alex Deucher

parent 2172b89e7c

commit 02d35a67f4

1 changed files with 4 additions and 0 deletions

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drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

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