From: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
[Why]
The pointer for integrated_info can be NULL which causes the system to
do a null pointer deference and hang on boot.
[How]
Add a check to ensure that integrated_info is not null before enabling
DP ss.
Change-Id: I01184ff9169a7fff47de65a32cbc51321c66e9ea
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas at amd.com>
Reviewed-by: Sun peng Li <Sunpeng.Li at amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha at amd.com>
---
drivers/gpu/drm/amd/display/dc/core/dc_link.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index 063f6660c570..a20557c3cf28 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -1026,7 +1026,9 @@ static bool construct(
link->link_index = init_params->link_index;
link->link_id = bios->funcs->get_connector_id(bios, init_params->connector_index);
- link->dp_ss_off = !!dc_ctx->dc_bios->integrated_info->dp_ss_control;;
+
+ if (dc_ctx->dc_bios->integrated_info)
+ link->dp_ss_off = !!dc_ctx->dc_bios->integrated_info->dp_ss_control;
if (link->link_id.type != OBJECT_TYPE_CONNECTOR) {
dm_error("%s: Invalid Connector ObjectID from Adapter Service for connector index:%d! type %d expected %d\n",
--
2.14.1
