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drm/amd/display: Initialize denominator defaults to 1

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[WHAT & HOW]
Variables, used as denominators and maybe not assigned to other values,
should be initialized to non-zero to avoid DIVIDE_BY_ZERO, as reported
by Coverity.

Reviewed-by: Austin Zheng <austin.zheng@amd.com>
Reviewed-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Tom Chung <chiahsuan.chung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit e2c4c6c105)
This commit is contained in:
Alex Hung 2024-12-17 11:51:58 -07:00 committed by Alex Deucher
parent b5c764d6ed
commit 36b23e3baf
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_core/dml2_core_dcn4_calcs.c
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@ -579,8 +579,8 @@ static void CalculateBytePerPixelAndBlockSizes(
{
*BytePerPixelDETY = 0;
*BytePerPixelDETC = 0;
*BytePerPixelY = 0;
*BytePerPixelC = 0;
*BytePerPixelY = 1;
*BytePerPixelC = 1;
if (SourcePixelFormat == dml2_444_64) {
*BytePerPixelDETY = 8;