diff options
Diffstat (limited to 'common/recipes-kernel/linux/files/0572-drm-amd-dal-temporary-fix-for-MST-chaing-disconnect.patch')
| -rw-r--r-- | common/recipes-kernel/linux/files/0572-drm-amd-dal-temporary-fix-for-MST-chaing-disconnect.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/files/0572-drm-amd-dal-temporary-fix-for-MST-chaing-disconnect.patch b/common/recipes-kernel/linux/files/0572-drm-amd-dal-temporary-fix-for-MST-chaing-disconnect.patch new file mode 100644 index 00000000..80a914ad --- /dev/null +++ b/common/recipes-kernel/linux/files/0572-drm-amd-dal-temporary-fix-for-MST-chaing-disconnect.patch @@ -0,0 +1,39 @@ +From 4617b27b7d395c4b7c885030e6b41623ddd5581f Mon Sep 17 00:00:00 2001 +From: Mykola Lysenko <Mykola.Lysenko@amd.com> +Date: Thu, 3 Dec 2015 19:22:04 +0800 +Subject: [PATCH 0572/1110] drm/amd/dal: temporary fix for MST chaing + disconnect + +Unplug of MST chain happened (two displays), +payload allocation table is empty on first reset mode, +and cause 0 division in avg_time_slots_per_mtp calculation + +Signed-off-by: Harry Wentland <harry.wentland@amd.com> +Acked-by: Harry Wentland <harry.wentland@amd.com> +--- + drivers/gpu/drm/amd/dal/dc/core/dc_link.c | 9 +++++++++ + 1 file changed, 9 insertions(+) + +diff --git a/drivers/gpu/drm/amd/dal/dc/core/dc_link.c b/drivers/gpu/drm/amd/dal/dc/core/dc_link.c +index 44b3a2b..8dc3af2 100644 +--- a/drivers/gpu/drm/amd/dal/dc/core/dc_link.c ++++ b/drivers/gpu/drm/amd/dal/dc/core/dc_link.c +@@ -1116,6 +1116,15 @@ static enum dc_status allocate_mst_payload(struct core_stream *stream) + &table, + true); + ++ /* ++ * temporary fix. Unplug of MST chain happened (two displays), ++ * table is empty on first reset mode, and cause 0 division in ++ * avg_time_slots_per_mtp calculation ++ */ ++ ++ if (table.stream_count == 0) ++ return DC_OK; ++ + /* program DP source TX for payload */ + dc->hwss.update_mst_stream_allocation_table( + link_encoder, +-- +2.7.4 + |