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drm/amd/display: Skip wbscl_set_scaler_filter if filter is null

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Callers can pass null in filter (i.e. from returned from the function
wbscl_get_filter_coeffs_16p) and a null check is added to ensure that is
not the case.

This fixes 4 NULL_RETURNS issues reported by Coverity.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Hung 2024-06-03 10:47:37 -06:00 committed by Alex Deucher
parent 8b0ddf19cc
commit c4d31653c0
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dwb_scl.c
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@ -690,6 +690,9 @@ static void wbscl_set_scaler_filter(
int pair;
uint16_t odd_coef, even_coef;
if (!filter)
return;
for (phase = 0; phase < (NUM_PHASES / 2 + 1); phase++) {
for (pair = 0; pair < tap_pairs; pair++) {
even_coef = filter[phase * taps + 2 * pair];