From: Alex Hung <alex.h...@amd.com>
[ Upstream commit c4d31653c03b90e51515b1380115d1aedad925dd ]
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.wentl...@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahf...@amd.com>
Signed-off-by: Alex Hung <alex.h...@amd.com>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dwb_scl.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dwb_scl.c
b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dwb_scl.c
index cd8bc92ce3ba9..4058a4fd6b224 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dwb_scl.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dwb_scl.c
@@ -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];
--
2.43.0
