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media: mtk_vcodec_util: Use dma_zalloc_coherent to replace dma_alloc_coherent + memset 

dma_zalloc_coherent has implemented the dma_alloc_coherent() + memset(),
We prefer to dma_zalloc_coherent instead of open-codeing.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
zhong jiang 2018-08-18 11:16:55 -04:00 committed by Mauro Carvalho Chehab
parent eac7230fdb
commit ee23c78c79
1 changed files with 1 additions and 4 deletions
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5
drivers/media/platform/mtk-vcodec/mtk_vcodec_util.c
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@ -49,16 +49,13 @@ int mtk_vcodec_mem_alloc(struct mtk_vcodec_ctx *data,
struct mtk_vcodec_ctx *ctx = (struct mtk_vcodec_ctx *)data;
struct device *dev = &ctx->dev->plat_dev->dev;
mem->va = dma_alloc_coherent(dev, size, &mem->dma_addr, GFP_KERNEL);
mem->va = dma_zalloc_coherent(dev, size, &mem->dma_addr, GFP_KERNEL);
if (!mem->va) {
mtk_v4l2_err("%s dma_alloc size=%ld failed!", dev_name(dev),
size);
return -ENOMEM;
}
memset(mem->va, 0, size);
mtk_v4l2_debug(3, "[%d] - va = %p", ctx->id, mem->va);
mtk_v4l2_debug(3, "[%d] - dma = 0x%lx", ctx->id,
(unsigned long)mem->dma_addr);