[PATCH 1/3] drm/amd/display: drop redundant memset() in get_available_dsc_slices()

Hamza Mahfooz hamza.mahfooz at amd.com
Wed May 17 18:33:45 UTC 2023


get_available_dsc_slices() returns the number of indices set, and all of
the users of get_available_dsc_slices() don't cross the returned bound
when iterating over available_slices[]. So, the memset() in
get_available_dsc_slices() is redundant and can be dropped.

Fixes: 97bda0322b8a ("drm/amd/display: Add DSC support for Navi (v2)")
Reported-by: Christophe JAILLET <christophe.jaillet at wanadoo.fr>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz at amd.com>
---
 drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c b/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c
index b9a05bb025db..58dd62cce4bb 100644
--- a/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c
+++ b/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c
@@ -645,8 +645,6 @@ static int get_available_dsc_slices(union dsc_enc_slice_caps slice_caps, int *av
 {
 	int idx = 0;
 
-	memset(available_slices, -1, MIN_AVAILABLE_SLICES_SIZE);
-
 	if (slice_caps.bits.NUM_SLICES_1)
 		available_slices[idx++] = 1;
 
-- 
2.40.1



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