From: Alex Hung alex.hung@amd.com
[ Upstream commit d6b54900c564e35989cf6813e4071504fa0a90e0 ]
[WHAT & HOW] dmub_rb_cmd's ramping_boundary has size of uint8_t and it is assigned 0xFFFF. Fix it by changing it to uint8_t with value of 0xFF.
This fixes 2 INTEGER_OVERFLOW issues reported by Coverity.
Reviewed-by: Rodrigo Siqueira rodrigo.siqueira@amd.com Acked-by: Zaeem Mohamed zaeem.mohamed@amd.com Signed-off-by: Alex Hung alex.hung@amd.com Tested-by: Daniel Wheeler daniel.wheeler@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/amd/display/dc/dce/dmub_abm_lcd.c | 2 +- drivers/gpu/drm/amd/display/dc/hwss/dcn21/dcn21_hwseq.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dmub_abm_lcd.c b/drivers/gpu/drm/amd/display/dc/dce/dmub_abm_lcd.c index b851fc65f5b7c..5c2d6642633d9 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dmub_abm_lcd.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dmub_abm_lcd.c @@ -258,7 +258,7 @@ bool dmub_abm_set_pipe(struct abm *abm, { union dmub_rb_cmd cmd; struct dc_context *dc = abm->ctx; - uint32_t ramping_boundary = 0xFFFF; + uint8_t ramping_boundary = 0xFF;
memset(&cmd, 0, sizeof(cmd)); cmd.abm_set_pipe.header.type = DMUB_CMD__ABM; diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn21/dcn21_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn21/dcn21_hwseq.c index 804be977ea47b..3de65a9f0e6f2 100644 --- a/drivers/gpu/drm/amd/display/dc/hwss/dcn21/dcn21_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn21/dcn21_hwseq.c @@ -142,7 +142,7 @@ static bool dmub_abm_set_pipe(struct abm *abm, uint32_t otg_inst, { union dmub_rb_cmd cmd; struct dc_context *dc = abm->ctx; - uint32_t ramping_boundary = 0xFFFF; + uint8_t ramping_boundary = 0xFF;
memset(&cmd, 0, sizeof(cmd)); cmd.abm_set_pipe.header.type = DMUB_CMD__ABM;