drm/amd/display: Handle the case which quad_part is equal 0

Add code to handle case when quad_part is 0 in gpu_addr_to_uma().

Acked-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn201/dcn201_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn201/dcn201_hwseq.c
index 6be846635a7987dc90ce8eedca4d3385955cc4c1..59f46df0155118ca52347552b5c7347e1a8cec09 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn201/dcn201_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn201/dcn201_hwseq.c
@@ -95,8 +95,11 @@ static bool gpu_addr_to_uma(struct dce_hwseq *hwseq,
        } else if (hwseq->fb_offset.quad_part <= addr->quad_part &&
                        addr->quad_part <= hwseq->uma_top.quad_part) {
                is_in_uma = true;
+       } else if (addr->quad_part == 0) {
+               is_in_uma = false;
        } else {
                is_in_uma = false;
+               BREAK_TO_DEBUGGER();
        }
        return is_in_uma;
 }