drm/amd/display: Fix 128b132b link loss handling
authorIlya Bakoulin <ilya.bakoulin@amd.com>
Wed, 7 Jun 2023 20:49:45 +0000 (16:49 -0400)
committerAlex Deucher <alexander.deucher@amd.com>
Fri, 23 Jun 2023 19:45:48 +0000 (15:45 -0400)
commited83fe2abcace898fdec5c2ba0455703178ac9a3
treec913c742ab3db1b5388c4f609564d1d8ea2f09f9
parenteffee878a8661d7f4f497304ecf256e4b1790d1e
drm/amd/display: Fix 128b132b link loss handling

[Why]
We don't check 128b132b-specific bits in LANE_ALIGN_STATUS_UPDATED DPCD
registers when parsing link loss status, which can cause us to miss a
link loss notification from some sinks.

[How]
Add a 128b132b-specific status bit check.

Cc: stable@vger.kernel.org # 6.3+
Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Ilya Bakoulin <ilya.bakoulin@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_irq_handler.c