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From d0bff6a4d45161fc76ec2ef0354a8c4e46125e01 Mon Sep 17 00:00:00 2001
From: John Barberiz <John.Barberiz@amd.com>
Date: Tue, 8 Jan 2019 17:43:08 -0500
Subject: [PATCH 1144/2940] drm/amd/display: Fix use of uninitialized union
[Why]
An uninitialized variable would randomly initialize to a large
value. This caused enough delay to fail DP Compliance Test 400.2.1.
[How]
Initialize the variable.
Signed-off-by: John Barberiz <John.Barberiz@amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index 431805c566cf..92f565ca1260 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -47,7 +47,7 @@ static void wait_for_training_aux_rd_interval(
struct dc_link *link,
uint32_t default_wait_in_micro_secs)
{
- union training_aux_rd_interval training_rd_interval;
+ union training_aux_rd_interval training_rd_interval = {0};
/* overwrite the delay if rev > 1.1*/
if (link->dpcd_caps.dpcd_rev.raw >= DPCD_REV_12) {
--
2.17.1
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