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| author | Sung Lee <sung.lee@amd.com> | 2020-03-30 17:16:23 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-04-22 18:11:47 -0400 |
| commit | 0b1f04d8876bd1397d3c2c837c3ea4cc77773698 (patch) | |
| tree | 5707c5f743948241e0cba0b68cb7cac7103fb536 /drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c | |
| parent | f2cd2e5d861245dbf40e9b919e4734123164d8f4 (diff) | |
| download | linux-stable-0b1f04d8876bd1397d3c2c837c3ea4cc77773698.tar.gz linux-stable-0b1f04d8876bd1397d3c2c837c3ea4cc77773698.tar.bz2 linux-stable-0b1f04d8876bd1397d3c2c837c3ea4cc77773698.zip | |
drm/amd/display: Cast int to float before division
[Why]:
Some inputs to dml_ceil have it dividied by int which causes a
truncation. This loss of precision means the ceil function becomes
redundant and does not round up.
[How]:
Cast parameter to float before division.
Signed-off-by: Sung Lee <sung.lee@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c b/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c index e6617c958bb8..5bc80b6084da 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn21/display_mode_vba_21.c @@ -5944,7 +5944,7 @@ static void CalculateMetaAndPTETimes( * PixelPTEReqHeightY[k]; } dpte_groups_per_row_luma_ub = dml_ceil( - dpte_row_width_luma_ub[k] / dpte_group_width_luma, + (float) dpte_row_width_luma_ub[k] / dpte_group_width_luma, 1); time_per_pte_group_nom_luma[k] = DST_Y_PER_PTE_ROW_NOM_L[k] * HTotal[k] / PixelClock[k] / dpte_groups_per_row_luma_ub; @@ -5968,7 +5968,7 @@ static void CalculateMetaAndPTETimes( * PixelPTEReqHeightC[k]; } dpte_groups_per_row_chroma_ub = dml_ceil( - dpte_row_width_chroma_ub[k] + (float) dpte_row_width_chroma_ub[k] / dpte_group_width_chroma, 1); time_per_pte_group_nom_chroma[k] = DST_Y_PER_PTE_ROW_NOM_C[k] |