diff options
| author | Wenjing Liu <wenjing.liu@amd.com> | 2026-03-26 19:00:34 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-04-17 22:23:49 +0300 |
| commit | 2b104fc31be0607c04188fadbd4a9fa5b50f3b99 (patch) | |
| tree | d90caba6ff3987bbe4c9a82a272c2275912041fc | |
| parent | d3a549f4df7864bca8612c8bcfce1ec72b2874fb (diff) | |
| download | linux-2b104fc31be0607c04188fadbd4a9fa5b50f3b99.tar.xz | |
drm/amd/display: fix math_mod() using arg1 instead of arg2
[Why]
math_mod() multiplied by arg1 instead of arg2, returning a wrong
result for any non-trivial modulo operation.
[How]
Replace arg1 with arg2 in the subtraction term to correctly
implement fmod(arg1, arg2).
Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dml2_0/dml21/src/dml2_standalone_libraries/lib_float_math.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dml2_0/dml21/src/dml2_standalone_libraries/lib_float_math.c b/drivers/gpu/drm/amd/display/dc/dml2_0/dml21/src/dml2_standalone_libraries/lib_float_math.c index e17b5ceba447..dc5bc649f3ac 100644 --- a/drivers/gpu/drm/amd/display/dc/dml2_0/dml21/src/dml2_standalone_libraries/lib_float_math.c +++ b/drivers/gpu/drm/amd/display/dc/dml2_0/dml21/src/dml2_standalone_libraries/lib_float_math.c @@ -23,7 +23,7 @@ double math_mod(const double arg1, const double arg2) return arg2; if (isNaN(arg2)) return arg1; - return arg1 - arg1 * ((int)(arg1 / arg2)); + return arg1 - arg2 * ((int)(arg1 / arg2)); } double math_min2(const double arg1, const double arg2) |