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linux/drivers/gpu/drm/amd
Nicholas Kazlauskas c40a09e56f drm/amd/display: Add callbacks for DMUB HPD IRQ notifications
[Why]
We need HPD IRQ notifications (RX, short pulse) to properly handle
DP MST for DPIA connections.

[How]
A null pointer exception currently occurs when these are received
so add a check to validate that we have a handler installed for
the notification.

Extend the HPD handler to also handle HPD IRQ (RX) since the logic is
the same.

Fixes: e27c41d5b0 ("drm/amd/display: Support for DMUB HPD interrupt handling")

Reviewed-by: Wayne Lin <Wayne.Lin@amd.com>
Reviewed-by: Jude Shih <shenshih@amd.com>
Acked-by: Anson Jacob <Anson.Jacob@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2021-11-09 17:08:00 -05:00
..
acp drm: amd/acp: fix broken menu structure 2020-03-13 11:52:35 -04:00
amdgpu drm/amd/amdgpu: fix the kfd pre_reset sequence in sriov 2021-11-09 17:08:00 -05:00
amdkfd drm/amdkfd: Fix retry fault drain race conditions 2021-11-09 17:08:00 -05:00
display drm/amd/display: Add callbacks for DMUB HPD IRQ notifications 2021-11-09 17:08:00 -05:00
include drm/amd/display: Disable hdmistream and hdmichar clocks 2021-10-19 17:20:28 -04:00
pm drm/amd/pm: Correct DPMS disable IP version check 2021-11-05 14:11:43 -04:00