From: Wenjing Liu wenjing.liu@amd.com
[why] MAX_SURFACES is per stream, while MAX_PLANES is per asic. The mpc_combine is an array that records all the planes per asic. Therefore MAX_PLANES should be used as the array size. Using MAX_SURFACES causes array overflow when there are more than 3 planes.
[how] Use the MAX_PLANES for the mpc_combine array size.
Cc: Mario Limonciello mario.limonciello@amd.com Cc: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org Reviewed-by: Rodrigo Siqueira rodrigo.siqueira@amd.com Reviewed-by: Nevenko Stupar nevenko.stupar@amd.com Reviewed-by: Chaitanya Dhere chaitanya.dhere@amd.com Acked-by: Tom Chung chiahsuan.chung@amd.com Signed-off-by: Wenjing Liu wenjing.liu@amd.com --- drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c index 9b80f65c0466..a7981a0c4158 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c @@ -1113,7 +1113,7 @@ struct pipe_slice_table { struct pipe_ctx *pri_pipe; struct dc_plane_state *plane; int slice_count; - } mpc_combines[MAX_SURFACES]; + } mpc_combines[MAX_PLANES]; int mpc_combine_count; };