From: Michael Strauss <michael.strauss@xxxxxxx>
[WHY]
lt_settings' pointers remain uninitialized but nonzero if display fails
to light up with no DPCD/EDID info populated, leading to a hang on access
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@xxxxxxx>
Acked-by: Mikita Lipski <mikita.lipski@xxxxxxx>
Signed-off-by: Michael Strauss <michael.strauss@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
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 8b35cd9d4c01..20bbde8524b8 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
@@ -1561,7 +1561,7 @@ bool dc_link_dp_perform_link_training_skip_aux(
struct dc_link *link,
const struct dc_link_settings *link_setting)
{
- struct link_training_settings lt_settings;
+ struct link_training_settings lt_settings = {0};
dp_decide_training_settings(
link,
@@ -1707,7 +1707,7 @@ enum link_training_result dc_link_dp_perform_link_training(
bool skip_video_pattern)
{
enum link_training_result status = LINK_TRAINING_SUCCESS;
- struct link_training_settings lt_settings;
+ struct link_training_settings lt_settings = {0};
enum dp_link_encoding encoding =
dp_get_link_encoding_format(link_settings);
@@ -1944,7 +1944,7 @@ enum link_training_result dc_link_dp_sync_lt_attempt(
struct dc_link_settings *link_settings,
struct dc_link_training_overrides *lt_overrides)
{
- struct link_training_settings lt_settings;
+ struct link_training_settings lt_settings = {0};
enum link_training_result lt_status = LINK_TRAINING_SUCCESS;
enum dp_panel_mode panel_mode = DP_PANEL_MODE_DEFAULT;
enum clock_source_id dp_cs_id = CLOCK_SOURCE_ID_EXTERNAL;
--
2.25.1
