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drm/amd/display: Add check for granularity in dml ceil/floor helpers

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commit 0881fbc4fd62e00a2b8e102725f76d10351b2ea8 upstream.

[Why]
Wrapper functions for dcn_bw_ceil2() and dcn_bw_floor2()
should check for granularity is non zero to avoid assert and
divide-by-zero error in dcn_bw_ functions.

[How]
Add check for granularity 0.

Cc: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Signed-off-by: Roman Li <Roman.Li@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit f6e09701c3eb2ccb8cb0518e0b67f1c69742a4ec)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Roman Li
2024-12-13 13:51:07 -05:00
committed by Greg Kroah-Hartman
parent 44ee863592
commit f3d1e4062e
1 changed files with 8 additions and 0 deletions
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8
drivers/gpu/drm/amd/display/dc/dml/dml_inline_defs.h
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@@ -66,11 +66,15 @@ static inline double dml_max5(double a, double b, double c, double d, double e)
static inline double dml_ceil(double a, double granularity) static inline double dml_ceil(double a, double granularity)
{ {
if (granularity == 0)
return 0;
return (double) dcn_bw_ceil2(a, granularity); return (double) dcn_bw_ceil2(a, granularity);
} }
static inline double dml_floor(double a, double granularity) static inline double dml_floor(double a, double granularity)
{ {
if (granularity == 0)
return 0;
return (double) dcn_bw_floor2(a, granularity); return (double) dcn_bw_floor2(a, granularity);
} }
@@ -114,11 +118,15 @@ static inline double dml_ceil_2(double f)
static inline double dml_ceil_ex(double x, double granularity) static inline double dml_ceil_ex(double x, double granularity)
{ {
if (granularity == 0)
return 0;
return (double) dcn_bw_ceil2(x, granularity); return (double) dcn_bw_ceil2(x, granularity);
} }
static inline double dml_floor_ex(double x, double granularity) static inline double dml_floor_ex(double x, double granularity)
{ {
if (granularity == 0)
return 0;
return (double) dcn_bw_floor2(x, granularity); return (double) dcn_bw_floor2(x, granularity);
} }