6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Hung <alex.hung@xxxxxxx>
[ Upstream commit 36b23e3baf9129d5b6c3a3a85b6b7ffb75ae287c ]
[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@xxxxxxx>
Reviewed-by: Rodrigo Siqueira <rodrigo.siqueira@xxxxxxx>
Signed-off-by: Alex Hung <alex.hung@xxxxxxx>
Signed-off-by: Tom Chung <chiahsuan.chung@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
(cherry picked from commit e2c4c6c10542ccfe4a0830bb6c9fd5b177b7bbb7)
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
.../dc/dml2/dml21/src/dml2_core/dml2_core_dcn4_calcs.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_core/dml2_core_dcn4_calcs.c b/drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_core/dml2_core_dcn4_calcs.c
index 3ea54fd52e468..e2a3764d9d181 100644
--- a/drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_core/dml2_core_dcn4_calcs.c
+++ b/drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_core/dml2_core_dcn4_calcs.c
@@ -578,8 +578,8 @@ static void CalculateBytePerPixelAndBlockSizes(
{
*BytePerPixelDETY = 0;
*BytePerPixelDETC = 0;
- *BytePerPixelY = 0;
- *BytePerPixelC = 0;
+ *BytePerPixelY = 1;
+ *BytePerPixelC = 1;
if (SourcePixelFormat == dml2_444_64) {
*BytePerPixelDETY = 8;
--
2.39.5
