From: Nicholas Kazlauskas <[email protected]> [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 <[email protected]> Reviewed-by: Sun peng Li <[email protected]> Acked-by: Bhawanpreet Lakha <[email protected]> --- 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 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
