From: Bas Nieuwenhuizen bas@basnieuwenhuizen.nl
commit 2a807341ed1074ab83638f2fab08dffaa373f6b8 upstream.
Unused. Convert the divisions into asserts on the divisor, to debug why it is zero. The divide by zero is suspected of causing kernel panics.
While I have no idea where the zero is coming from I think this patch is a positive either way.
Cc: stable@vger.kernel.org Reviewed-by: Harry Wentland harry.wentland@amd.com Signed-off-by: Bas Nieuwenhuizen bas@basnieuwenhuizen.nl Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c | 1 - drivers/gpu/drm/amd/display/dc/dml/dcn20/display_rq_dlg_calc_20.c | 2 -- drivers/gpu/drm/amd/display/dc/dml/dcn20/display_rq_dlg_calc_20v2.c | 2 -- drivers/gpu/drm/amd/display/dc/dml/dcn21/display_rq_dlg_calc_21.c | 2 -- drivers/gpu/drm/amd/display/dc/dml/dcn30/display_rq_dlg_calc_30.c | 2 -- drivers/gpu/drm/amd/display/dc/dml/display_mode_structs.h | 1 - drivers/gpu/drm/amd/display/dc/dml/display_rq_dlg_helpers.c | 3 --- drivers/gpu/drm/amd/display/dc/dml/dml1_display_rq_dlg_calc.c | 4 ---- 8 files changed, 17 deletions(-)
--- a/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c +++ b/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c @@ -503,7 +503,6 @@ static void dcn_bw_calc_rq_dlg_ttu( //input[in_idx].dout.output_standard;
/*todo: soc->sr_enter_plus_exit_time??*/ - dlg_sys_param->t_srx_delay_us = dc->dcn_ip->dcfclk_cstate_latency / v->dcf_clk_deep_sleep;
dml1_rq_dlg_get_rq_params(dml, rq_param, &input->pipe.src); dml1_extract_rq_regs(dml, rq_regs, rq_param); --- a/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_rq_dlg_calc_20.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_rq_dlg_calc_20.c @@ -1576,8 +1576,6 @@ void dml20_rq_dlg_get_dlg_reg(struct dis dlg_sys_param.total_flip_bytes = get_total_immediate_flip_bytes(mode_lib, e2e_pipe_param, num_pipes); - dlg_sys_param.t_srx_delay_us = mode_lib->ip.dcfclk_cstate_latency - / dlg_sys_param.deepsleep_dcfclk_mhz; // TODO: Deprecated
print__dlg_sys_params_st(mode_lib, &dlg_sys_param);
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_rq_dlg_calc_20v2.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_rq_dlg_calc_20v2.c @@ -1577,8 +1577,6 @@ void dml20v2_rq_dlg_get_dlg_reg(struct d dlg_sys_param.total_flip_bytes = get_total_immediate_flip_bytes(mode_lib, e2e_pipe_param, num_pipes); - dlg_sys_param.t_srx_delay_us = mode_lib->ip.dcfclk_cstate_latency - / dlg_sys_param.deepsleep_dcfclk_mhz; // TODO: Deprecated
print__dlg_sys_params_st(mode_lib, &dlg_sys_param);
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_rq_dlg_calc_21.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_rq_dlg_calc_21.c @@ -1688,8 +1688,6 @@ void dml21_rq_dlg_get_dlg_reg( mode_lib, e2e_pipe_param, num_pipes); - dlg_sys_param.t_srx_delay_us = mode_lib->ip.dcfclk_cstate_latency - / dlg_sys_param.deepsleep_dcfclk_mhz; // TODO: Deprecated
print__dlg_sys_params_st(mode_lib, &dlg_sys_param);
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn30/display_rq_dlg_calc_30.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn30/display_rq_dlg_calc_30.c @@ -1858,8 +1858,6 @@ void dml30_rq_dlg_get_dlg_reg(struct dis dlg_sys_param.total_flip_bytes = get_total_immediate_flip_bytes(mode_lib, e2e_pipe_param, num_pipes); - dlg_sys_param.t_srx_delay_us = mode_lib->ip.dcfclk_cstate_latency - / dlg_sys_param.deepsleep_dcfclk_mhz; // TODO: Deprecated
print__dlg_sys_params_st(mode_lib, &dlg_sys_param);
--- a/drivers/gpu/drm/amd/display/dc/dml/display_mode_structs.h +++ b/drivers/gpu/drm/amd/display/dc/dml/display_mode_structs.h @@ -546,7 +546,6 @@ struct _vcs_dpi_display_dlg_sys_params_s double t_sr_wm_us; double t_extra_us; double mem_trip_us; - double t_srx_delay_us; double deepsleep_dcfclk_mhz; double total_flip_bw; unsigned int total_flip_bytes; --- a/drivers/gpu/drm/amd/display/dc/dml/display_rq_dlg_helpers.c +++ b/drivers/gpu/drm/amd/display/dc/dml/display_rq_dlg_helpers.c @@ -142,9 +142,6 @@ void print__dlg_sys_params_st(struct dis dml_print("DML_RQ_DLG_CALC: t_sr_wm_us = %3.2f\n", dlg_sys_param->t_sr_wm_us); dml_print("DML_RQ_DLG_CALC: t_extra_us = %3.2f\n", dlg_sys_param->t_extra_us); dml_print( - "DML_RQ_DLG_CALC: t_srx_delay_us = %3.2f\n", - dlg_sys_param->t_srx_delay_us); - dml_print( "DML_RQ_DLG_CALC: deepsleep_dcfclk_mhz = %3.2f\n", dlg_sys_param->deepsleep_dcfclk_mhz); dml_print( --- a/drivers/gpu/drm/amd/display/dc/dml/dml1_display_rq_dlg_calc.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dml1_display_rq_dlg_calc.c @@ -1331,10 +1331,6 @@ void dml1_rq_dlg_get_dlg_params( if (dual_plane) DTRACE("DLG: %s: swath_height_c = %d", __func__, swath_height_c);
- DTRACE( - "DLG: %s: t_srx_delay_us = %3.2f", - __func__, - (double) dlg_sys_param->t_srx_delay_us); DTRACE("DLG: %s: line_time_in_us = %3.2f", __func__, (double) line_time_in_us); DTRACE("DLG: %s: vupdate_offset = %d", __func__, vupdate_offset); DTRACE("DLG: %s: vupdate_width = %d", __func__, vupdate_width);