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Subject: media: rkvdec:Remove redundant memset
Author:  Zhang Zekun <[email protected]>
Date:    Fri Jun 17 10:39:25 2022 +0100

As dma_alloc_coherent() will return a zeroed buffer, we
don't need to memset the returned buffer.
priv_tbl = dma_alloc_coherent() and count_tbl = dma_alloc_coherent()
should be enough.

-see commit 750afb08ca71 ("cross-tree: phase out dma_zalloc_coherent()")

Signed-off-by: Zhang Zekun <[email protected]>
Reviewed-by: Dan Carpenter <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

 drivers/staging/media/rkvdec/rkvdec-vp9.c | 2 --
 1 file changed, 2 deletions(-)

---

diff --git a/drivers/staging/media/rkvdec/rkvdec-vp9.c 
b/drivers/staging/media/rkvdec/rkvdec-vp9.c
index 311a12656072..c2f42e76be10 100644
--- a/drivers/staging/media/rkvdec/rkvdec-vp9.c
+++ b/drivers/staging/media/rkvdec/rkvdec-vp9.c
@@ -1015,7 +1015,6 @@ static int rkvdec_vp9_start(struct rkvdec_ctx *ctx)
 
        vp9_ctx->priv_tbl.size = sizeof(*priv_tbl);
        vp9_ctx->priv_tbl.cpu = priv_tbl;
-       memset(priv_tbl, 0, sizeof(*priv_tbl));
 
        count_tbl = dma_alloc_coherent(rkvdec->dev, RKVDEC_VP9_COUNT_SIZE,
                                       &vp9_ctx->count_tbl.dma, GFP_KERNEL);
@@ -1026,7 +1025,6 @@ static int rkvdec_vp9_start(struct rkvdec_ctx *ctx)
 
        vp9_ctx->count_tbl.size = RKVDEC_VP9_COUNT_SIZE;
        vp9_ctx->count_tbl.cpu = count_tbl;
-       memset(count_tbl, 0, sizeof(*count_tbl));
        rkvdec_init_v4l2_vp9_count_tbl(ctx);
 
        return 0;

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