diff options
| author | Alex Hung <alex.hung@amd.com> | 2024-06-18 23:05:08 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-07-24 00:07:10 +0300 |
| commit | b995c0a6de6c74656a0c39cd57a0626351b13e3c (patch) | |
| tree | a0e66f00c50ae28192cc340a2719752fa72ae89d /drivers | |
| parent | f60881ca126cf825b89b4118e93dbd82ea9bcf33 (diff) | |
| download | linux-b995c0a6de6c74656a0c39cd57a0626351b13e3c.tar.xz | |
drm/amd/display: Initialize denominators' default to 1
[WHAT & HOW]
Variables used as denominators and maybe not assigned to other values,
should not be 0. Change their default to 1 so they are never 0.
This fixes 10 DIVIDE_BY_ZERO issues reported by Coverity.
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Jerry Zuo <jerry.zuo@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>
Diffstat (limited to 'drivers')
3 files changed, 4 insertions, 4 deletions
diff --git 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 index 7c56ad0f8812..e7019c95ba79 100644 --- 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 @@ -78,7 +78,7 @@ static void calculate_ttu_cursor(struct display_mode_lib *mode_lib, static unsigned int get_bytes_per_element(enum source_format_class source_format, bool is_chroma) { - unsigned int ret_val = 0; + unsigned int ret_val = 1; if (source_format == dm_444_16) { if (!is_chroma) diff --git 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 index dae13f202220..d8bfc85e5dcd 100644 --- 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 @@ -39,7 +39,7 @@ static unsigned int get_bytes_per_element(enum source_format_class source_format, bool is_chroma) { - unsigned int ret_val = 0; + unsigned int ret_val = 1; if (source_format == dm_444_16) { if (!is_chroma) diff --git a/drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_core/dml2_core_shared.c b/drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_core/dml2_core_shared.c index 81f0a6f19f87..679b20031903 100644 --- a/drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_core/dml2_core_shared.c +++ b/drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_core/dml2_core_shared.c @@ -9386,8 +9386,8 @@ static void CalculateVMGroupAndRequestTimes( double TimePerVMRequestVBlank[], double TimePerVMRequestFlip[]) { - unsigned int num_group_per_lower_vm_stage = 0; - unsigned int num_req_per_lower_vm_stage = 0; + unsigned int num_group_per_lower_vm_stage = 1; + unsigned int num_req_per_lower_vm_stage = 1; #ifdef __DML_VBA_DEBUG__ dml2_printf("DML::%s: NumberOfActiveSurfaces = %u\n", __func__, NumberOfActiveSurfaces); |